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render chapter two

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YDZ
2021-01-16 00:27:26 +08:00
parent 4614f589ec
commit 1a51946f5d
28 changed files with 822 additions and 490 deletions
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2
ctl/meta/Two_Pointers
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@ -34,7 +34,7 @@
|713. Subarray Product Less Than K | [Go]({{< relref "/ChapterFour/0713.Subarray-Product-Less-Than-K.md" >}})| Medium | O(n)| O(1)||
|763. Partition Labels | [Go]({{< relref "/ChapterFour/0763.Partition-Labels.md" >}})| Medium | O(n)| O(1)|❤️|
|826. Most Profit Assigning Work | [Go]({{< relref "/ChapterFour/0826.Most-Profit-Assigning-Work.md" >}})| Medium | O(n log n)| O(n)||
|828. Unique Letter String | [Go]({{< relref "/ChapterFour/0828.COPYRIGHT-PROBLEM-XXX.md" >}})| Hard | O(n)| O(1)|❤️|
|828. Count Unique Characters of All Substrings of a Given String | [Go]({{< relref "/ChapterFour/0828.Count-Unique-Characters-of-All-Substrings-of-a-Given-String.md" >}})| Hard | O(n)| O(1)|❤️|
|838. Push Dominoes | [Go]({{< relref "/ChapterFour/0838.Push-Dominoes.md" >}})| Medium | O(n)| O(n)||
|844. Backspace String Compare | [Go]({{< relref "/ChapterFour/0844.Backspace-String-Compare.md" >}})| Easy | O(n)| O(n) ||
|845. Longest Mountain in Array | [Go]({{< relref "/ChapterFour/0845.Longest-Mountain-in-Array.md" >}})| Medium | O(n)| O(1) ||

2
ctl/meta/Union_Find
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@ -2,7 +2,7 @@
|130. Surrounded Regions | [Go]({{< relref "/ChapterFour/0130.Surrounded-Regions.md" >}})| Medium | O(m\*n)| O(m\*n)||
|200. Number of Islands | [Go]({{< relref "/ChapterFour/0200.Number-of-Islands.md" >}})| Medium | O(m\*n)| O(m\*n)||
|399. Evaluate Division | [Go]({{< relref "/ChapterFour/0399.Evaluate-Division.md" >}})| Medium | O(n)| O(n)||
|547. Friend Circles | [Go]({{< relref "/ChapterFour/0547.Friend-Circles.md" >}})| Medium | O(n^2)| O(n)||
|547. Number of Provinces | [Go]({{< relref "/ChapterFour/0547.Number-of-Provinces.md" >}})| Medium | O(n^2)| O(n)||
|684. Redundant Connection | [Go]({{< relref "/ChapterFour/0684.Redundant-Connection.md" >}})| Medium | O(n)| O(n)||
|685. Redundant Connection II | [Go]({{< relref "/ChapterFour/0685.Redundant-Connection-II.md" >}})| Hard | O(n)| O(n)||
|721. Accounts Merge | [Go]({{< relref "/ChapterFour/0721.Accounts-Merge.md" >}})| Medium | O(n)| O(n)|❤️|

9
ctl/models/tagproblem.go
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@ -122,7 +122,14 @@ func GenerateTagMdRows(solutionIds []int, metaMap map[int]TagList, mdrows []Mdro
tmp := TagList{}
tmp.FrontendQuestionID = row.FrontendQuestionID
tmp.QuestionTitle = row.QuestionTitle
tmp.SolutionPath = fmt.Sprintf("[Go]({{< relref \"/ChapterFour/%v.md\" >}})", fmt.Sprintf("%04d.%v", int(row.FrontendQuestionID), strings.Replace(row.QuestionTitle, " ", "-", -1)))
s1 := strings.Replace(row.QuestionTitle, " ", "-", -1)
s2 := strings.Replace(s1, "'", "", -1)
s3 := strings.Replace(s2, "%", "", -1)
s4 := strings.Replace(s3, "(", "", -1)
s5 := strings.Replace(s4, ")", "", -1)
s6 := strings.Replace(s5, ",", "", -1)
s7 := strings.Replace(s6, "?", "", -1)
tmp.SolutionPath = fmt.Sprintf("[Go]({{< relref \"/ChapterFour/%v.md\" >}})", fmt.Sprintf("%04d.%v", int(row.FrontendQuestionID), s7))
tmp.Acceptance = row.Acceptance
tmp.Difficulty = row.Difficulty
tmp.TimeComplexity = metaMap[int(row.FrontendQuestionID)].TimeComplexity

7
ctl/render.go
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@ -152,7 +152,6 @@ func buildChapterTwo() {
gr m.GraphQLResp
questions []m.Question
)
for index, tag := range chapterTwoSlug {
body := getTagProblemList(tag)
// fmt.Printf("%v\n", string(body))
@ -165,21 +164,19 @@ func buildChapterTwo() {
mdrows := m.ConvertMdModelFromQuestions(questions)
sort.Sort(m.SortByQuestionID(mdrows))
solutionIds, _ := util.LoadSolutionsDir()
// generateMdRows(solutionIds, mdrows)
tl, err := loadMetaData(fmt.Sprintf("./meta/%v", chapterTwoFileName[index]))
if err != nil {
fmt.Printf("err = %v\n", err)
}
tls := m.GenerateTagMdRows(solutionIds, tl, mdrows)
//fmt.Printf("tls = %v\n", tls)
// // 按照模板渲染 README
// 按照模板渲染 README
res, err := renderChapterTwo(fmt.Sprintf("./template/%v.md", chapterTwoFileName[index]), m.TagLists{TagLists: tls})
if err != nil {
fmt.Println(err)
return
}
util.WriteFile(fmt.Sprintf("./%v.md", chapterTwoFileName[index]), res)
util.WriteFile(fmt.Sprintf("../website/content/ChapterTwo/%v.md", chapterTwoFileName[index]), res)
}
}

0
leetcode/0211.Add-and-Search-Word---Data-structure-design/211. Add and Search Word - Data structure design.go → leetcode/0211.Design-Add-and-Search-Words-Data-Structure/211. Design Add and Search Words Data Structure.go
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0
leetcode/0211.Add-and-Search-Word---Data-structure-design/211. Add and Search Word - Data structure design_test.go → leetcode/0211.Design-Add-and-Search-Words-Data-Structure/211. Design Add and Search Words Data Structure_test.go
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2
leetcode/0211.Add-and-Search-Word---Data-structure-design/README.md → leetcode/0211.Design-Add-and-Search-Words-Data-Structure/README.md
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@ -1,4 +1,4 @@
# [211. Add and Search Word - Data structure design](https://leetcode.com/problems/add-and-search-word-data-structure-design/)
# [211. Design Add and Search Words Data Structure](https://leetcode.com/problems/design-add-and-search-words-data-structure/)
## 题目

2
website/content/ChapterFour/0211.Add-and-Search-Word---Data-structure-design.md → website/content/ChapterFour/0211.Design-Add-and-Search-Words-Data-Structure.md
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@ -1,4 +1,4 @@
# [211. Add and Search Word - Data structure design](https://leetcode.com/problems/add-and-search-word-data-structure-design/)
# [211. Design Add and Search Words Data Structure](https://leetcode.com/problems/design-add-and-search-words-data-structure/)
## 题目

19
website/content/ChapterTwo/Array.md
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@ -76,7 +76,7 @@ type: docs
|0566|Reshape the Matrix|[Go]({{< relref "/ChapterFour/0566.Reshape-the-Matrix.md" >}})|Easy| O(n^2)| O(n^2)||61.0%|
|0605|Can Place Flowers|[Go]({{< relref "/ChapterFour/0605.Can-Place-Flowers.md" >}})|Easy||||31.9%|
|0628|Maximum Product of Three Numbers|[Go]({{< relref "/ChapterFour/0628.Maximum-Product-of-Three-Numbers.md" >}})|Easy| O(n)| O(1)||47.0%|
|0661|Image Smoother|[Go]({{< relref "/ChapterFour/0661.Image-Smoother.md" >}})|Easy||||52.1%|
|0661|Image Smoother|[Go]({{< relref "/ChapterFour/0661.Image-Smoother.md" >}})|Easy||||52.2%|
|0695|Max Area of Island|[Go]({{< relref "/ChapterFour/0695.Max-Area-of-Island.md" >}})|Medium||||64.3%|
|0697|Degree of an Array|[Go]({{< relref "/ChapterFour/0697.Degree-of-an-Array.md" >}})|Easy||||54.3%|
|0713|Subarray Product Less Than K|[Go]({{< relref "/ChapterFour/0713.Subarray-Product-Less-Than-K.md" >}})|Medium| O(n)| O(1)||40.4%|
@ -87,7 +87,7 @@ type: docs
|0724|Find Pivot Index|[Go]({{< relref "/ChapterFour/0724.Find-Pivot-Index.md" >}})|Easy||||45.0%|
|0729|My Calendar I|[Go]({{< relref "/ChapterFour/0729.My-Calendar-I.md" >}})|Medium||||53.1%|
|0746|Min Cost Climbing Stairs|[Go]({{< relref "/ChapterFour/0746.Min-Cost-Climbing-Stairs.md" >}})|Easy| O(n)| O(1)||50.9%|
|0766|Toeplitz Matrix|[Go]({{< relref "/ChapterFour/0766.Toeplitz-Matrix.md" >}})|Easy| O(n)| O(1)||65.8%|
|0766|Toeplitz Matrix|[Go]({{< relref "/ChapterFour/0766.Toeplitz-Matrix.md" >}})|Easy| O(n)| O(1)||65.7%|
|0830|Positions of Large Groups|[Go]({{< relref "/ChapterFour/0830.Positions-of-Large-Groups.md" >}})|Easy||||50.2%|
|0832|Flipping an Image|[Go]({{< relref "/ChapterFour/0832.Flipping-an-Image.md" >}})|Easy||||77.9%|
|0867|Transpose Matrix|[Go]({{< relref "/ChapterFour/0867.Transpose-Matrix.md" >}})|Easy| O(n)| O(1)||62.2%|
@ -107,8 +107,8 @@ type: docs
|1011|Capacity To Ship Packages Within D Days|[Go]({{< relref "/ChapterFour/1011.Capacity-To-Ship-Packages-Within-D-Days.md" >}})|Medium||||59.5%|
|1018|Binary Prefix Divisible By 5|[Go]({{< relref "/ChapterFour/1018.Binary-Prefix-Divisible-By-5.md" >}})|Easy||||47.8%|
|1040|Moving Stones Until Consecutive II|[Go]({{< relref "/ChapterFour/1040.Moving-Stones-Until-Consecutive-II.md" >}})|Medium||||54.0%|
|1051|Height Checker|[Go]({{< relref "/ChapterFour/1051.Height-Checker.md" >}})|Easy||||71.8%|
|1052|Grumpy Bookstore Owner|[Go]({{< relref "/ChapterFour/1052.Grumpy-Bookstore-Owner.md" >}})|Medium||||55.7%|
|1051|Height Checker|[Go]({{< relref "/ChapterFour/1051.Height-Checker.md" >}})|Easy||||71.9%|
|1052|Grumpy Bookstore Owner|[Go]({{< relref "/ChapterFour/1052.Grumpy-Bookstore-Owner.md" >}})|Medium||||55.6%|
|1074|Number of Submatrices That Sum to Target|[Go]({{< relref "/ChapterFour/1074.Number-of-Submatrices-That-Sum-to-Target.md" >}})|Hard||||61.4%|
|1089|Duplicate Zeros|[Go]({{< relref "/ChapterFour/1089.Duplicate-Zeros.md" >}})|Easy||||52.0%|
|1122|Relative Sort Array|[Go]({{< relref "/ChapterFour/1122.Relative-Sort-Array.md" >}})|Easy||||67.7%|
@ -127,11 +127,11 @@ type: docs
|1260|Shift 2D Grid|[Go]({{< relref "/ChapterFour/1260.Shift-2D-Grid.md" >}})|Easy||||61.8%|
|1266|Minimum Time Visiting All Points|[Go]({{< relref "/ChapterFour/1266.Minimum-Time-Visiting-All-Points.md" >}})|Easy||||79.3%|
|1275|Find Winner on a Tic Tac Toe Game|[Go]({{< relref "/ChapterFour/1275.Find-Winner-on-a-Tic-Tac-Toe-Game.md" >}})|Easy||||52.9%|
|1287|Element Appearing More Than 25% In Sorted Array|[Go]({{< relref "/ChapterFour/1287.Element-Appearing-More-Than-25%-In-Sorted-Array.md" >}})|Easy||||60.2%|
|1287|Element Appearing More Than 25% In Sorted Array|[Go]({{< relref "/ChapterFour/1287.Element-Appearing-More-Than-25-In-Sorted-Array.md" >}})|Easy||||60.2%|
|1295|Find Numbers with Even Number of Digits|[Go]({{< relref "/ChapterFour/1295.Find-Numbers-with-Even-Number-of-Digits.md" >}})|Easy||||79.4%|
|1299|Replace Elements with Greatest Element on Right Side|[Go]({{< relref "/ChapterFour/1299.Replace-Elements-with-Greatest-Element-on-Right-Side.md" >}})|Easy||||74.1%|
|1300|Sum of Mutated Array Closest to Target|[Go]({{< relref "/ChapterFour/1300.Sum-of-Mutated-Array-Closest-to-Target.md" >}})|Medium||||43.3%|
|1304|Find N Unique Integers Sum up to Zero|[Go]({{< relref "/ChapterFour/1304.Find-N-Unique-Integers-Sum-up-to-Zero.md" >}})|Easy||||76.5%|
|1304|Find N Unique Integers Sum up to Zero|[Go]({{< relref "/ChapterFour/1304.Find-N-Unique-Integers-Sum-up-to-Zero.md" >}})|Easy||||76.6%|
|1313|Decompress Run-Length Encoded List|[Go]({{< relref "/ChapterFour/1313.Decompress-Run-Length-Encoded-List.md" >}})|Easy||||85.3%|
|1380|Lucky Numbers in a Matrix|[Go]({{< relref "/ChapterFour/1380.Lucky-Numbers-in-a-Matrix.md" >}})|Easy||||70.9%|
|1385|Find the Distance Value Between Two Arrays|[Go]({{< relref "/ChapterFour/1385.Find-the-Distance-Value-Between-Two-Arrays.md" >}})|Easy||||66.4%|
@ -141,10 +141,11 @@ type: docs
|1480|Running Sum of 1d Array|[Go]({{< relref "/ChapterFour/1480.Running-Sum-of-1d-Array.md" >}})|Easy||||89.6%|
|1512|Number of Good Pairs|[Go]({{< relref "/ChapterFour/1512.Number-of-Good-Pairs.md" >}})|Easy||||87.9%|
|1539|Kth Missing Positive Number|[Go]({{< relref "/ChapterFour/1539.Kth-Missing-Positive-Number.md" >}})|Easy||||55.3%|
|1640|Check Array Formation Through Concatenation|[Go]({{< relref "/ChapterFour/1640.Check-Array-Formation-Through-Concatenation.md" >}})|Easy||||62.4%|
|1646|Get Maximum in Generated Array|[Go]({{< relref "/ChapterFour/1646.Get-Maximum-in-Generated-Array.md" >}})|Easy||||51.6%|
|1640|Check Array Formation Through Concatenation|[Go]({{< relref "/ChapterFour/1640.Check-Array-Formation-Through-Concatenation.md" >}})|Easy||||62.3%|
|1646|Get Maximum in Generated Array|[Go]({{< relref "/ChapterFour/1646.Get-Maximum-in-Generated-Array.md" >}})|Easy||||52.3%|
|1652|Defuse the Bomb|[Go]({{< relref "/ChapterFour/1652.Defuse-the-Bomb.md" >}})|Easy||||64.2%|
|1656|Design an Ordered Stream|[Go]({{< relref "/ChapterFour/1656.Design-an-Ordered-Stream.md" >}})|Easy||||82.4%|
|1656|Design an Ordered Stream|[Go]({{< relref "/ChapterFour/1656.Design-an-Ordered-Stream.md" >}})|Easy||||82.5%|
|1672|Richest Customer Wealth|[Go]({{< relref "/ChapterFour/1672.Richest-Customer-Wealth.md" >}})|Easy||||88.6%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

70
website/content/ChapterTwo/Backtracking.md
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@ -97,36 +97,40 @@ func updateMatrix_BFS(matrix [][]int) [][]int {
}
```
| Title | Solution | Difficulty | Time | Space |收藏|
| ----- | :--------: | :----------: | :----: | :-----: | :-----: |
|17. Letter Combinations of a Phone Number | [Go]({{< relref "/ChapterFour/0017.Letter-Combinations-of-a-Phone-Number.md" >}})| Medium | O(log n)| O(1)||
|22. Generate Parentheses| [Go]({{< relref "/ChapterFour/0022.Generate-Parentheses.md" >}})| Medium | O(log n)| O(1)||
|37. Sudoku Solver | [Go]({{< relref "/ChapterFour/0037.Sudoku-Solver.md" >}})| Hard | O(n^2)| O(n^2)|❤️|
|39. Combination Sum | [Go]({{< relref "/ChapterFour/0039.Combination-Sum.md" >}})| Medium | O(n log n)| O(n)||
|40. Combination Sum II | [Go]({{< relref "/ChapterFour/0040.Combination-Sum-II.md" >}})| Medium | O(n log n)| O(n)||
|46. Permutations | [Go]({{< relref "/ChapterFour/0046.Permutations.md" >}})| Medium | O(n)| O(n)|❤️|
|47. Permutations II | [Go]({{< relref "/ChapterFour/0047.Permutations-II.md" >}})| Medium | O(n^2)| O(n)|❤️|
|51. N-Queens | [Go]({{< relref "/ChapterFour/0051.N-Queens.md" >}})| Hard | O(n^2)| O(n)|❤️|
|52. N-Queens II | [Go]({{< relref "/ChapterFour/0052.N-Queens-II.md" >}})| Hard | O(n^2)| O(n)|❤️|
|60. Permutation Sequence | [Go]({{< relref "/ChapterFour/0060.Permutation-Sequence.md" >}})| Medium | O(n log n)| O(1)||
|77. Combinations | [Go]({{< relref "/ChapterFour/0077.Combinations.md" >}})| Medium | O(n)| O(n)|❤️|
|78. Subsets | [Go]({{< relref "/ChapterFour/0078.Subsets.md" >}})| Medium | O(n^2)| O(n)|❤️|
|79. Word Search | [Go]({{< relref "/ChapterFour/0079.Word-Search.md" >}})| Medium | O(n^2)| O(n^2)|❤️|
|89. Gray Codes | [Go]({{< relref "/ChapterFour/0089.Gray-Code.md" >}})| Medium | O(n)| O(1)||
|90. Subsets II | [Go]({{< relref "/ChapterFour/0090.Subsets-II.md" >}})| Medium | O(n^2)| O(n)|❤️|
|93. Restore IP Addresses | [Go]({{< relref "/ChapterFour/0093.Restore-IP-Addresses.md" >}})| Medium | O(n)| O(n)|❤️|
|126. Word Ladder II | [Go]({{< relref "/ChapterFour/0126.Word-Ladder-II.md" >}})| Hard | O(n)| O(n^2)|❤️|
|131. Palindrome Partitioning | [Go]({{< relref "/ChapterFour/0131.Palindrome-Partitioning.md" >}})| Medium | O(n)| O(n^2)|❤️|
|211. Add and Search Word - Data structure design | [Go]({{< relref "/ChapterFour/0211.Add-and-Search-Word---Data-structure-design.md" >}})| Medium | O(n)| O(n)|❤️|
|212. Word Search II | [Go]({{< relref "/ChapterFour/0212.Word-Search-II.md" >}})| Hard | O(n^2)| O(n^2)|❤️|
|216. Combination Sum III | [Go]({{< relref "/ChapterFour/0216.Combination-Sum-III.md" >}})| Medium | O(n)| O(1)|❤️|
|306. Additive Number | [Go]({{< relref "/ChapterFour/0306.Additive-Number.md" >}})| Medium | O(n^2)| O(1)|❤️|
|357. Count Numbers with Unique Digits | [Go]({{< relref "/ChapterFour/0357.Count-Numbers-with-Unique-Digits.md" >}})| Medium | O(1)| O(1)||
|401. Binary Watch | [Go]({{< relref "/ChapterFour/0401.Binary-Watch.md" >}})| Easy | O(1)| O(1)||
|526. Beautiful Arrangement | [Go]({{< relref "/ChapterFour/0526.Beautiful-Arrangement.md" >}})| Medium | O(n^2)| O(1)|❤️|
|784. Letter Case Permutation | [Go]({{< relref "/ChapterFour/0784.Letter-Case-Permutation.md" >}})| Easy | O(n)| O(n)||
|842. Split Array into Fibonacci Sequence | [Go]({{< relref "/ChapterFour/0842.Split-Array-into-Fibonacci-Sequence.md" >}})| Medium | O(n^2)| O(1)|❤️|
|980. Unique Paths III | [Go]({{< relref "/ChapterFour/0980.Unique-Paths-III.md" >}})| Hard | O(n log n)| O(n)||
|996. Number of Squareful Arrays | [Go]({{< relref "/ChapterFour/0996.Number-of-Squareful-Arrays.md" >}})| Hard | O(n log n)| O(n) ||
|1079. Letter Tile Possibilities | [Go]({{< relref "/ChapterFour/1079.Letter-Tile-Possibilities.md" >}})| Medium | O(n^2)| O(1)|❤️|
|---------------------------------------|---------------------------------|--------------------------|-----------------------|-----------|--------|
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0017|Letter Combinations of a Phone Number|[Go]({{< relref "/ChapterFour/0017.Letter-Combinations-of-a-Phone-Number.md" >}})|Medium| O(log n)| O(1)||48.6%|
|0022|Generate Parentheses|[Go]({{< relref "/ChapterFour/0022.Generate-Parentheses.md" >}})|Medium| O(log n)| O(1)||64.8%|
|0037|Sudoku Solver|[Go]({{< relref "/ChapterFour/0037.Sudoku-Solver.md" >}})|Hard| O(n^2)| O(n^2)|❤️|45.9%|
|0039|Combination Sum|[Go]({{< relref "/ChapterFour/0039.Combination-Sum.md" >}})|Medium| O(n log n)| O(n)||58.7%|
|0040|Combination Sum II|[Go]({{< relref "/ChapterFour/0040.Combination-Sum-II.md" >}})|Medium| O(n log n)| O(n)||49.8%|
|0046|Permutations|[Go]({{< relref "/ChapterFour/0046.Permutations.md" >}})|Medium| O(n)| O(n)|❤️|66.0%|
|0047|Permutations II|[Go]({{< relref "/ChapterFour/0047.Permutations-II.md" >}})|Medium| O(n^2)| O(n)|❤️|49.0%|
|0051|N-Queens|[Go]({{< relref "/ChapterFour/0051.N-Queens.md" >}})|Hard| O(n^2)| O(n)|❤️|49.0%|
|0052|N-Queens II|[Go]({{< relref "/ChapterFour/0052.N-Queens-II.md" >}})|Hard| O(n^2)| O(n)|❤️|59.7%|
|0060|Permutation Sequence|[Go]({{< relref "/ChapterFour/0060.Permutation-Sequence.md" >}})|Hard| O(n log n)| O(1)||39.2%|
|0077|Combinations|[Go]({{< relref "/ChapterFour/0077.Combinations.md" >}})|Medium| O(n)| O(n)|❤️|56.9%|
|0078|Subsets|[Go]({{< relref "/ChapterFour/0078.Subsets.md" >}})|Medium| O(n^2)| O(n)|❤️|64.5%|
|0079|Word Search|[Go]({{< relref "/ChapterFour/0079.Word-Search.md" >}})|Medium| O(n^2)| O(n^2)|❤️|36.6%|
|0089|Gray Code|[Go]({{< relref "/ChapterFour/0089.Gray-Code.md" >}})|Medium| O(n)| O(1)||50.1%|
|0090|Subsets II|[Go]({{< relref "/ChapterFour/0090.Subsets-II.md" >}})|Medium| O(n^2)| O(n)|❤️|48.5%|
|0093|Restore IP Addresses|[Go]({{< relref "/ChapterFour/0093.Restore-IP-Addresses.md" >}})|Medium| O(n)| O(n)|❤️|37.2%|
|0126|Word Ladder II|[Go]({{< relref "/ChapterFour/0126.Word-Ladder-II.md" >}})|Hard| O(n)| O(n^2)|❤️|23.4%|
|0131|Palindrome Partitioning|[Go]({{< relref "/ChapterFour/0131.Palindrome-Partitioning.md" >}})|Medium| O(n)| O(n^2)|❤️|51.3%|
|0211|Design Add and Search Words Data Structure|[Go]({{< relref "/ChapterFour/0211.Design-Add-and-Search-Words-Data-Structure.md" >}})|Medium| O(n)| O(n)|❤️|39.8%|
|0212|Word Search II|[Go]({{< relref "/ChapterFour/0212.Word-Search-II.md" >}})|Hard| O(n^2)| O(n^2)|❤️|36.5%|
|0216|Combination Sum III|[Go]({{< relref "/ChapterFour/0216.Combination-Sum-III.md" >}})|Medium| O(n)| O(1)|❤️|59.9%|
|0306|Additive Number|[Go]({{< relref "/ChapterFour/0306.Additive-Number.md" >}})|Medium| O(n^2)| O(1)|❤️|29.6%|
|0357|Count Numbers with Unique Digits|[Go]({{< relref "/ChapterFour/0357.Count-Numbers-with-Unique-Digits.md" >}})|Medium| O(1)| O(1)||48.7%|
|0401|Binary Watch|[Go]({{< relref "/ChapterFour/0401.Binary-Watch.md" >}})|Easy| O(1)| O(1)||48.3%|
|0526|Beautiful Arrangement|[Go]({{< relref "/ChapterFour/0526.Beautiful-Arrangement.md" >}})|Medium| O(n^2)| O(1)|❤️|61.7%|
|0784|Letter Case Permutation|[Go]({{< relref "/ChapterFour/0784.Letter-Case-Permutation.md" >}})|Medium| O(n)| O(n)||66.2%|
|0842|Split Array into Fibonacci Sequence|[Go]({{< relref "/ChapterFour/0842.Split-Array-into-Fibonacci-Sequence.md" >}})|Medium| O(n^2)| O(1)|❤️|36.7%|
|0980|Unique Paths III|[Go]({{< relref "/ChapterFour/0980.Unique-Paths-III.md" >}})|Hard| O(n log n)| O(n)||77.1%|
|0996|Number of Squareful Arrays|[Go]({{< relref "/ChapterFour/0996.Number-of-Squareful-Arrays.md" >}})|Hard| O(n log n)| O(n) ||48.0%|
|1079|Letter Tile Possibilities|[Go]({{< relref "/ChapterFour/1079.Letter-Tile-Possibilities.md" >}})|Medium| O(n^2)| O(1)|❤️|75.8%|
|1655|Distribute Repeating Integers|[Go]({{< relref "/ChapterFour/1655.Distribute-Repeating-Integers.md" >}})|Hard||||40.7%|
|1659|Maximize Grid Happiness|[Go]({{< relref "/ChapterFour/1659.Maximize-Grid-Happiness.md" >}})|Hard||||35.2%|
|1681|Minimum Incompatibility|[Go]({{< relref "/ChapterFour/1681.Minimum-Incompatibility.md" >}})|Hard||||35.0%|
|1688|Count of Matches in Tournament|[Go]({{< relref "/ChapterFour/1688.Count-of-Matches-in-Tournament.md" >}})|Easy||||83.2%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

10
website/content/ChapterTwo/Binary_Indexed_Tree.md
View File

@ -6,3 +6,13 @@ type: docs
# Binary Indexed Tree
![](https://img.halfrost.com/Leetcode/Binary_Indexed_Tree.png)
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0218|The Skyline Problem|[Go]({{< relref "/ChapterFour/0218.The-Skyline-Problem.md" >}})|Hard||||36.1%|
|0307|Range Sum Query - Mutable|[Go]({{< relref "/ChapterFour/0307.Range-Sum-Query---Mutable.md" >}})|Medium||||36.5%|
|0315|Count of Smaller Numbers After Self|[Go]({{< relref "/ChapterFour/0315.Count-of-Smaller-Numbers-After-Self.md" >}})|Hard||||42.6%|
|0327|Count of Range Sum|[Go]({{< relref "/ChapterFour/0327.Count-of-Range-Sum.md" >}})|Hard||||35.9%|
|0493|Reverse Pairs|[Go]({{< relref "/ChapterFour/0493.Reverse-Pairs.md" >}})|Hard||||26.6%|
|1649|Create Sorted Array through Instructions|[Go]({{< relref "/ChapterFour/1649.Create-Sorted-Array-through-Instructions.md" >}})|Hard||||36.2%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

87
website/content/ChapterTwo/Binary_Search.md
View File

@ -127,19 +127,74 @@ func peakIndexInMountainArray(A []int) int {
- max-min 最大值最小化问题。求在最小满足条件的情况下的最大值。第 410 题，第 875 题，第 1011 题，第 1283 题。
| Title | Solution | Difficulty | Time | Space |收藏|
| ----- | :--------: | :----------: | :----: | :-----: | :-----: |
|50. Pow(x, n) | [Go]({{< relref "/ChapterFour/0050.Powx-n.md" >}})| Medium | O(log n)| O(1)||
|69. Sqrt(x) | [Go]({{< relref "/ChapterFour/0069.Sqrtx.md" >}})| Easy | O(log n)| O(1)||
|167. Two Sum II - Input array is sorted | [Go]({{< relref "/ChapterFour/0167.Two-Sum-II---Input-array-is-sorted.md" >}})| Easy | O(n)| O(1)||
|209. Minimum Size Subarray Sum | [Go]({{< relref "/ChapterFour/0209.Minimum-Size-Subarray-Sum.md" >}})| Medium | O(n)| O(1)||
|222. Count Complete Tree Nodes | [Go]({{< relref "/ChapterFour/0222.Count-Complete-Tree-Nodes.md" >}})| Medium | O(n)| O(1)||
|230. Kth Smallest Element in a BST | [Go]({{< relref "/ChapterFour/0230.Kth-Smallest-Element-in-a-BST.md" >}})| Medium | O(n)| O(1)||
|287. Find the Duplicate Number | [Go]({{< relref "/ChapterFour/0287.Find-the-Duplicate-Number.md" >}})| Easy | O(n)| O(1)|❤️|
|300. Longest Increasing Subsequence | [Go]({{< relref "/ChapterFour/0300.Longest-Increasing-Subsequence.md" >}})| Medium | O(n log n)| O(n)||
|349. Intersection of Two Arrays | [Go]({{< relref "/ChapterFour/0349.Intersection-of-Two-Arrays.md" >}})| Easy | O(n)| O(n) ||
|350. Intersection of Two Arrays II | [Go]({{< relref "/ChapterFour/0350.Intersection-of-Two-Arrays-II.md" >}})| Easy | O(n)| O(n) ||
|392. Is Subsequence | [Go]({{< relref "/ChapterFour/0392.Is-Subsequence.md" >}})| Medium | O(n)| O(1)||
|454. 4Sum II | [Go]({{< relref "/ChapterFour/0454.4Sum-II.md" >}})| Medium | O(n^2)| O(n) ||
|710. Random Pick with Blacklist | [Go]({{< relref "/ChapterFour/0710.Random-Pick-with-Blacklist.md" >}})| Hard | O(n)| O(n) ||
|-----------------------------------------------|---------------------------------|--------------------------|-----------------------|-----------|--------|
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0004|Median of Two Sorted Arrays|[Go]({{< relref "/ChapterFour/0004.Median-of-Two-Sorted-Arrays.md" >}})|Hard||||30.8%|
|0029|Divide Two Integers|[Go]({{< relref "/ChapterFour/0029.Divide-Two-Integers.md" >}})|Medium||||16.6%|
|0033|Search in Rotated Sorted Array|[Go]({{< relref "/ChapterFour/0033.Search-in-Rotated-Sorted-Array.md" >}})|Medium||||35.6%|
|0034|Find First and Last Position of Element in Sorted Array|[Go]({{< relref "/ChapterFour/0034.Find-First-and-Last-Position-of-Element-in-Sorted-Array.md" >}})|Medium||||37.1%|
|0035|Search Insert Position|[Go]({{< relref "/ChapterFour/0035.Search-Insert-Position.md" >}})|Easy||||42.8%|
|0050|Pow(x, n)|[Go]({{< relref "/ChapterFour/0050.Powx-n.md" >}})|Medium| O(log n)| O(1)||30.8%|
|0069|Sqrt(x)|[Go]({{< relref "/ChapterFour/0069.Sqrtx.md" >}})|Easy| O(log n)| O(1)||34.8%|
|0074|Search a 2D Matrix|[Go]({{< relref "/ChapterFour/0074.Search-a-2D-Matrix.md" >}})|Medium||||37.4%|
|0081|Search in Rotated Sorted Array II|[Go]({{< relref "/ChapterFour/0081.Search-in-Rotated-Sorted-Array-II.md" >}})|Medium||||33.5%|
|0153|Find Minimum in Rotated Sorted Array|[Go]({{< relref "/ChapterFour/0153.Find-Minimum-in-Rotated-Sorted-Array.md" >}})|Medium||||45.9%|
|0154|Find Minimum in Rotated Sorted Array II|[Go]({{< relref "/ChapterFour/0154.Find-Minimum-in-Rotated-Sorted-Array-II.md" >}})|Hard||||41.9%|
|0162|Find Peak Element|[Go]({{< relref "/ChapterFour/0162.Find-Peak-Element.md" >}})|Medium||||43.8%|
|0167|Two Sum II - Input array is sorted|[Go]({{< relref "/ChapterFour/0167.Two-Sum-II---Input-array-is-sorted.md" >}})|Easy| O(n)| O(1)||55.4%|
|0174|Dungeon Game|[Go]({{< relref "/ChapterFour/0174.Dungeon-Game.md" >}})|Hard||||33.1%|
|0209|Minimum Size Subarray Sum|[Go]({{< relref "/ChapterFour/0209.Minimum-Size-Subarray-Sum.md" >}})|Medium| O(n)| O(1)||39.2%|
|0222|Count Complete Tree Nodes|[Go]({{< relref "/ChapterFour/0222.Count-Complete-Tree-Nodes.md" >}})|Medium| O(n)| O(1)||48.8%|
|0230|Kth Smallest Element in a BST|[Go]({{< relref "/ChapterFour/0230.Kth-Smallest-Element-in-a-BST.md" >}})|Medium| O(n)| O(1)||62.1%|
|0240|Search a 2D Matrix II|[Go]({{< relref "/ChapterFour/0240.Search-a-2D-Matrix-II.md" >}})|Medium||||44.1%|
|0275|H-Index II|[Go]({{< relref "/ChapterFour/0275.H-Index-II.md" >}})|Medium||||36.2%|
|0287|Find the Duplicate Number|[Go]({{< relref "/ChapterFour/0287.Find-the-Duplicate-Number.md" >}})|Medium| O(n)| O(1)|❤️|57.1%|
|0300|Longest Increasing Subsequence|[Go]({{< relref "/ChapterFour/0300.Longest-Increasing-Subsequence.md" >}})|Medium| O(n log n)| O(n)||43.6%|
|0315|Count of Smaller Numbers After Self|[Go]({{< relref "/ChapterFour/0315.Count-of-Smaller-Numbers-After-Self.md" >}})|Hard||||42.6%|
|0327|Count of Range Sum|[Go]({{< relref "/ChapterFour/0327.Count-of-Range-Sum.md" >}})|Hard||||35.9%|
|0349|Intersection of Two Arrays|[Go]({{< relref "/ChapterFour/0349.Intersection-of-Two-Arrays.md" >}})|Easy| O(n)| O(n) ||64.4%|
|0350|Intersection of Two Arrays II|[Go]({{< relref "/ChapterFour/0350.Intersection-of-Two-Arrays-II.md" >}})|Easy| O(n)| O(n) ||51.9%|
|0354|Russian Doll Envelopes|[Go]({{< relref "/ChapterFour/0354.Russian-Doll-Envelopes.md" >}})|Hard||||36.1%|
|0367|Valid Perfect Square|[Go]({{< relref "/ChapterFour/0367.Valid-Perfect-Square.md" >}})|Easy||||42.0%|
|0378|Kth Smallest Element in a Sorted Matrix|[Go]({{< relref "/ChapterFour/0378.Kth-Smallest-Element-in-a-Sorted-Matrix.md" >}})|Medium||||55.8%|
|0392|Is Subsequence|[Go]({{< relref "/ChapterFour/0392.Is-Subsequence.md" >}})|Easy| O(n)| O(1)||49.5%|
|0410|Split Array Largest Sum|[Go]({{< relref "/ChapterFour/0410.Split-Array-Largest-Sum.md" >}})|Hard||||46.1%|
|0436|Find Right Interval|[Go]({{< relref "/ChapterFour/0436.Find-Right-Interval.md" >}})|Medium||||48.4%|
|0441|Arranging Coins|[Go]({{< relref "/ChapterFour/0441.Arranging-Coins.md" >}})|Easy||||42.3%|
|0454|4Sum II|[Go]({{< relref "/ChapterFour/0454.4Sum-II.md" >}})|Medium| O(n^2)| O(n) ||54.5%|
|0475|Heaters|[Go]({{< relref "/ChapterFour/0475.Heaters.md" >}})|Medium||||33.5%|
|0483|Smallest Good Base|[Go]({{< relref "/ChapterFour/0483.Smallest-Good-Base.md" >}})|Hard||||36.2%|
|0493|Reverse Pairs|[Go]({{< relref "/ChapterFour/0493.Reverse-Pairs.md" >}})|Hard||||26.6%|
|0497|Random Point in Non-overlapping Rectangles|[Go]({{< relref "/ChapterFour/0497.Random-Point-in-Non-overlapping-Rectangles.md" >}})|Medium||||39.1%|
|0528|Random Pick with Weight|[Go]({{< relref "/ChapterFour/0528.Random-Pick-with-Weight.md" >}})|Medium||||44.5%|
|0658|Find K Closest Elements|[Go]({{< relref "/ChapterFour/0658.Find-K-Closest-Elements.md" >}})|Medium||||41.7%|
|0668|Kth Smallest Number in Multiplication Table|[Go]({{< relref "/ChapterFour/0668.Kth-Smallest-Number-in-Multiplication-Table.md" >}})|Hard||||47.6%|
|0704|Binary Search|[Go]({{< relref "/ChapterFour/0704.Binary-Search.md" >}})|Easy||||54.0%|
|0710|Random Pick with Blacklist|[Go]({{< relref "/ChapterFour/0710.Random-Pick-with-Blacklist.md" >}})|Hard| O(n)| O(n) ||32.7%|
|0718|Maximum Length of Repeated Subarray|[Go]({{< relref "/ChapterFour/0718.Maximum-Length-of-Repeated-Subarray.md" >}})|Medium||||50.1%|
|0719|Find K-th Smallest Pair Distance|[Go]({{< relref "/ChapterFour/0719.Find-K-th-Smallest-Pair-Distance.md" >}})|Hard||||32.5%|
|0744|Find Smallest Letter Greater Than Target|[Go]({{< relref "/ChapterFour/0744.Find-Smallest-Letter-Greater-Than-Target.md" >}})|Easy||||45.6%|
|0778|Swim in Rising Water|[Go]({{< relref "/ChapterFour/0778.Swim-in-Rising-Water.md" >}})|Hard||||54.4%|
|0786|K-th Smallest Prime Fraction|[Go]({{< relref "/ChapterFour/0786.K-th-Smallest-Prime-Fraction.md" >}})|Hard||||41.7%|
|0793|Preimage Size of Factorial Zeroes Function|[Go]({{< relref "/ChapterFour/0793.Preimage-Size-of-Factorial-Zeroes-Function.md" >}})|Hard||||40.6%|
|0852|Peak Index in a Mountain Array|[Go]({{< relref "/ChapterFour/0852.Peak-Index-in-a-Mountain-Array.md" >}})|Easy||||71.8%|
|0862|Shortest Subarray with Sum at Least K|[Go]({{< relref "/ChapterFour/0862.Shortest-Subarray-with-Sum-at-Least-K.md" >}})|Hard||||25.1%|
|0875|Koko Eating Bananas|[Go]({{< relref "/ChapterFour/0875.Koko-Eating-Bananas.md" >}})|Medium||||53.4%|
|0878|Nth Magical Number|[Go]({{< relref "/ChapterFour/0878.Nth-Magical-Number.md" >}})|Hard||||28.9%|
|0887|Super Egg Drop|[Go]({{< relref "/ChapterFour/0887.Super-Egg-Drop.md" >}})|Hard||||27.0%|
|0911|Online Election|[Go]({{< relref "/ChapterFour/0911.Online-Election.md" >}})|Medium||||51.2%|
|0927|Three Equal Parts|[Go]({{< relref "/ChapterFour/0927.Three-Equal-Parts.md" >}})|Hard||||34.5%|
|0981|Time Based Key-Value Store|[Go]({{< relref "/ChapterFour/0981.Time-Based-Key-Value-Store.md" >}})|Medium||||53.9%|
|1011|Capacity To Ship Packages Within D Days|[Go]({{< relref "/ChapterFour/1011.Capacity-To-Ship-Packages-Within-D-Days.md" >}})|Medium||||59.5%|
|1111|Maximum Nesting Depth of Two Valid Parentheses Strings|[Go]({{< relref "/ChapterFour/1111.Maximum-Nesting-Depth-of-Two-Valid-Parentheses-Strings.md" >}})|Medium||||72.4%|
|1157|Online Majority Element In Subarray|[Go]({{< relref "/ChapterFour/1157.Online-Majority-Element-In-Subarray.md" >}})|Hard||||39.5%|
|1201|Ugly Number III|[Go]({{< relref "/ChapterFour/1201.Ugly-Number-III.md" >}})|Medium||||26.3%|
|1235|Maximum Profit in Job Scheduling|[Go]({{< relref "/ChapterFour/1235.Maximum-Profit-in-Job-Scheduling.md" >}})|Hard||||46.9%|
|1283|Find the Smallest Divisor Given a Threshold|[Go]({{< relref "/ChapterFour/1283.Find-the-Smallest-Divisor-Given-a-Threshold.md" >}})|Medium||||49.2%|
|1300|Sum of Mutated Array Closest to Target|[Go]({{< relref "/ChapterFour/1300.Sum-of-Mutated-Array-Closest-to-Target.md" >}})|Medium||||43.3%|
|1649|Create Sorted Array through Instructions|[Go]({{< relref "/ChapterFour/1649.Create-Sorted-Array-through-Instructions.md" >}})|Hard||||36.2%|
|1658|Minimum Operations to Reduce X to Zero|[Go]({{< relref "/ChapterFour/1658.Minimum-Operations-to-Reduce-X-to-Zero.md" >}})|Medium||||33.6%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|
--|

66
website/content/ChapterTwo/Bit_Manipulation.md
View File

@ -40,35 +40,37 @@ X & ~X = 0
```
| Title | Solution | Difficulty | Time | Space | 收藏 |
| ----- | :--------: | :----------: | :----: | :-----: |:-----: |
|78. Subsets | [Go]({{< relref "/ChapterFour/0078.Subsets.md" >}})| Medium | O(n^2)| O(n)|❤️|
|136. Single Number | [Go]({{< relref "/ChapterFour/0136.Single-Number.md" >}})| Easy | O(n)| O(1)||
|137. Single Number II | [Go]({{< relref "/ChapterFour/0137.Single-Number-II.md" >}})| Medium | O(n)| O(1)|❤️|
|169. Majority Element | [Go]({{< relref "/ChapterFour/0169.Majority-Element.md" >}})| Easy | O(n)| O(1)|❤️|
|187. Repeated DNA Sequences | [Go]({{< relref "/ChapterFour/0187.Repeated-DNA-Sequences.md" >}})| Medium | O(n)| O(1)||
|190. Reverse Bits | [Go]({{< relref "/ChapterFour/0190.Reverse-Bits.md" >}})| Easy | O(n)| O(1)|❤️|
|191. Number of 1 Bits | [Go]({{< relref "/ChapterFour/0191.Number-of-1-Bits.md" >}})| Easy | O(n)| O(1)||
|201. Bitwise AND of Numbers Range | [Go]({{< relref "/ChapterFour/0201.Bitwise-AND-of-Numbers-Range.md" >}})| Medium | O(n)| O(1)|❤️|
|231. Power of Two | [Go]({{< relref "/ChapterFour/0231.Power-of-Two.md" >}})| Easy | O(1)| O(1)||
|260. Single Number III | [Go]({{< relref "/ChapterFour/0260.Single-Number-III.md" >}})| Medium | O(n)| O(1)|❤️|
|268. Missing Number | [Go]({{< relref "/ChapterFour/0268.Missing-Number.md" >}})| Easy | O(n)| O(1)||
|318. Maximum Product of Word Lengths | [Go]({{< relref "/ChapterFour/0318.Maximum-Product-of-Word-Lengths.md" >}})| Medium | O(n)| O(1)||
|338. Counting Bits | [Go]({{< relref "/ChapterFour/0338.Counting-Bits.md" >}})| Medium | O(n)| O(n)||
|342. Power of Four | [Go]({{< relref "/ChapterFour/0342.Power-of-Four.md" >}})| Easy | O(n)| O(1)||
|371. Sum of Two Integers | [Go]({{< relref "/ChapterFour/0371.Sum-of-Two-Integers.md" >}})| Easy | O(n)| O(1)||
|389. Find the Difference | [Go]({{< relref "/ChapterFour/0389.Find-the-Difference.md" >}})| Easy | O(n)| O(1)||
|393. UTF-8 Validation | [Go]({{< relref "/ChapterFour/0393.UTF-8-Validation.md" >}})| Medium | O(n)| O(1)||
|397. Integer Replacement | [Go]({{< relref "/ChapterFour/0397.Integer-Replacement.md" >}})| Medium | O(n)| O(1)||
|401. Binary Watch | [Go]({{< relref "/ChapterFour/0401.Binary-Watch.md" >}})| Easy | O(1)| O(1)||
|405. Convert a Number to Hexadecimal | [Go]({{< relref "/ChapterFour/0405.Convert-a-Number-to-Hexadecimal.md" >}})| Easy | O(n)| O(1)||
|421. Maximum XOR of Two Numbers in an Array | [Go]({{< relref "/ChapterFour/0421.Maximum-XOR-of-Two-Numbers-in-an-Array.md" >}})| Medium | O(n)| O(1)|❤️|
|461. Hamming Distance | [Go]({{< relref "/ChapterFour/0461.Hamming-Distance.md" >}})| Easy | O(n)| O(1)||
|476. Number Complement | [Go]({{< relref "/ChapterFour/0476.Number-Complement.md" >}})| Easy | O(n)| O(1)||
|477. Total Hamming Distance | [Go]({{< relref "/ChapterFour/0477.Total-Hamming-Distance.md" >}})| Medium | O(n)| O(1)||
|693. Binary Number with Alternating Bits | [Go]({{< relref "/ChapterFour/0693.Binary-Number-with-Alternating-Bits.md" >}})| Easy | O(n)| O(1)|❤️|
|756. Pyramid Transition Matrix | [Go]({{< relref "/ChapterFour/0756.Pyramid-Transition-Matrix.md" >}})| Medium | O(n log n)| O(n)||
|762. Prime Number of Set Bits in Binary Representation | [Go]({{< relref "/ChapterFour/0762.Prime-Number-of-Set-Bits-in-Binary-Representation.md" >}})| Easy | O(n)| O(1)||
|784. Letter Case Permutation | [Go]({{< relref "/ChapterFour/0784.Letter-Case-Permutation.md" >}})| Easy | O(n)| O(1)||
|898. Bitwise ORs of Subarrays | [Go]({{< relref "/ChapterFour/0898.Bitwise-ORs-of-Subarrays.md" >}})| Medium | O(n)| O(1)||
|---------------------------------------|---------------------------------|--------------------------|-----------------------|-----------|--------|
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0078|Subsets|[Go]({{< relref "/ChapterFour/0078.Subsets.md" >}})|Medium| O(n^2)| O(n)|❤️|64.5%|
|0136|Single Number|[Go]({{< relref "/ChapterFour/0136.Single-Number.md" >}})|Easy| O(n)| O(1)||66.4%|
|0137|Single Number II|[Go]({{< relref "/ChapterFour/0137.Single-Number-II.md" >}})|Medium| O(n)| O(1)|❤️|53.5%|
|0169|Majority Element|[Go]({{< relref "/ChapterFour/0169.Majority-Element.md" >}})|Easy| O(n)| O(1)|❤️|59.8%|
|0187|Repeated DNA Sequences|[Go]({{< relref "/ChapterFour/0187.Repeated-DNA-Sequences.md" >}})|Medium| O(n)| O(1)||41.2%|
|0190|Reverse Bits|[Go]({{< relref "/ChapterFour/0190.Reverse-Bits.md" >}})|Easy| O(n)| O(1)|❤️|41.6%|
|0191|Number of 1 Bits|[Go]({{< relref "/ChapterFour/0191.Number-of-1-Bits.md" >}})|Easy| O(n)| O(1)||51.9%|
|0201|Bitwise AND of Numbers Range|[Go]({{< relref "/ChapterFour/0201.Bitwise-AND-of-Numbers-Range.md" >}})|Medium| O(n)| O(1)|❤️|39.6%|
|0231|Power of Two|[Go]({{< relref "/ChapterFour/0231.Power-of-Two.md" >}})|Easy| O(1)| O(1)||43.8%|
|0260|Single Number III|[Go]({{< relref "/ChapterFour/0260.Single-Number-III.md" >}})|Medium| O(n)| O(1)|❤️|65.2%|
|0268|Missing Number|[Go]({{< relref "/ChapterFour/0268.Missing-Number.md" >}})|Easy| O(n)| O(1)||53.4%|
|0318|Maximum Product of Word Lengths|[Go]({{< relref "/ChapterFour/0318.Maximum-Product-of-Word-Lengths.md" >}})|Medium| O(n)| O(1)||52.0%|
|0338|Counting Bits|[Go]({{< relref "/ChapterFour/0338.Counting-Bits.md" >}})|Medium| O(n)| O(n)||70.2%|
|0342|Power of Four|[Go]({{< relref "/ChapterFour/0342.Power-of-Four.md" >}})|Easy| O(n)| O(1)||41.6%|
|0371|Sum of Two Integers|[Go]({{< relref "/ChapterFour/0371.Sum-of-Two-Integers.md" >}})|Medium| O(n)| O(1)||50.6%|
|0389|Find the Difference|[Go]({{< relref "/ChapterFour/0389.Find-the-Difference.md" >}})|Easy| O(n)| O(1)||57.7%|
|0393|UTF-8 Validation|[Go]({{< relref "/ChapterFour/0393.UTF-8-Validation.md" >}})|Medium| O(n)| O(1)||37.9%|
|0397|Integer Replacement|[Go]({{< relref "/ChapterFour/0397.Integer-Replacement.md" >}})|Medium| O(n)| O(1)||33.4%|
|0401|Binary Watch|[Go]({{< relref "/ChapterFour/0401.Binary-Watch.md" >}})|Easy| O(1)| O(1)||48.3%|
|0405|Convert a Number to Hexadecimal|[Go]({{< relref "/ChapterFour/0405.Convert-a-Number-to-Hexadecimal.md" >}})|Easy| O(n)| O(1)||44.3%|
|0421|Maximum XOR of Two Numbers in an Array|[Go]({{< relref "/ChapterFour/0421.Maximum-XOR-of-Two-Numbers-in-an-Array.md" >}})|Medium| O(n)| O(1)|❤️|53.9%|
|0461|Hamming Distance|[Go]({{< relref "/ChapterFour/0461.Hamming-Distance.md" >}})|Easy| O(n)| O(1)||73.1%|
|0476|Number Complement|[Go]({{< relref "/ChapterFour/0476.Number-Complement.md" >}})|Easy| O(n)| O(1)||65.1%|
|0477|Total Hamming Distance|[Go]({{< relref "/ChapterFour/0477.Total-Hamming-Distance.md" >}})|Medium| O(n)| O(1)||50.6%|
|0693|Binary Number with Alternating Bits|[Go]({{< relref "/ChapterFour/0693.Binary-Number-with-Alternating-Bits.md" >}})|Easy| O(n)| O(1)|❤️|59.7%|
|0756|Pyramid Transition Matrix|[Go]({{< relref "/ChapterFour/0756.Pyramid-Transition-Matrix.md" >}})|Medium| O(n log n)| O(n)||55.5%|
|0762|Prime Number of Set Bits in Binary Representation|[Go]({{< relref "/ChapterFour/0762.Prime-Number-of-Set-Bits-in-Binary-Representation.md" >}})|Easy| O(n)| O(1)||64.1%|
|0784|Letter Case Permutation|[Go]({{< relref "/ChapterFour/0784.Letter-Case-Permutation.md" >}})|Medium| O(n)| O(1)||66.2%|
|0898|Bitwise ORs of Subarrays|[Go]({{< relref "/ChapterFour/0898.Bitwise-ORs-of-Subarrays.md" >}})|Medium| O(n)| O(1)||34.0%|
|1290|Convert Binary Number in a Linked List to Integer|[Go]({{< relref "/ChapterFour/1290.Convert-Binary-Number-in-a-Linked-List-to-Integer.md" >}})|Easy||||81.6%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

45
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# Breadth First Search
| Title | Solution | Difficulty | Time | Space |收藏|
| ----- | :--------: | :----------: | :----: | :-----: | :-----: |
|101. Symmetric Tree | [Go]({{< relref "/ChapterFour/0101.Symmetric-Tree.md" >}})| Easy | O(n)| O(1)||
|102. Binary Tree Level Order Traversal | [Go]({{< relref "/ChapterFour/0102.Binary-Tree-Level-Order-Traversal.md" >}})| Medium | O(n)| O(1)||
|103. Binary Tree Zigzag Level Order Traversal | [Go]({{< relref "/ChapterFour/0103.Binary-Tree-Zigzag-Level-Order-Traversal.md" >}})| Medium | O(n)| O(n)||
|107. Binary Tree Level Order Traversal II | [Go]({{< relref "/ChapterFour/0107.Binary-Tree-Level-Order-Traversal-II.md" >}})| Easy | O(n)| O(1)||
|111. Minimum Depth of Binary Tree | [Go]({{< relref "/ChapterFour/0111.Minimum-Depth-of-Binary-Tree.md" >}})| Easy | O(n)| O(1)||
|126. Word Ladder II | [Go]({{< relref "/ChapterFour/0126.Word-Ladder-II.md" >}})| Hard | O(n)| O(n^2)|❤️|
|127. Word Ladder | [Go]({{< relref "/ChapterFour/0127.Word-Ladder.md" >}})| Medium | O(n)| O(n)||
|199. Binary Tree Right Side View | [Go]({{< relref "/ChapterFour/0199.Binary-Tree-Right-Side-View.md" >}})| Medium | O(n)| O(1)||
|200. Number of Islands | [Go]({{< relref "/ChapterFour/0200.Number-of-Islands.md" >}})| Medium | O(n^2)| O(n^2)||
|207. Course Schedule | [Go]({{< relref "/ChapterFour/0207.Course-Schedule.md" >}})| Medium | O(n^2)| O(n^2)||
|210. Course Schedule II | [Go]({{< relref "/ChapterFour/0210.Course-Schedule-II.md" >}})| Medium | O(n^2)| O(n^2)||
|515. Find Largest Value in Each Tree Row | [Go]({{< relref "/ChapterFour/0515.Find-Largest-Value-in-Each-Tree-Row.md" >}})| Medium | O(n)| O(n)||
|542. 01 Matrix | [Go]({{< relref "/ChapterFour/0542.01-Matrix.md" >}})| Medium | O(n)| O(1)||
|993. Cousins in Binary Tree | [Go]({{< relref "/ChapterFour/0993.Cousins-in-Binary-Tree.md" >}})| Easy | O(n)| O(1)||
|---------------------------------------|---------------------------------|--------------------------|-----------------------|-----------|--------|
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0101|Symmetric Tree|[Go]({{< relref "/ChapterFour/0101.Symmetric-Tree.md" >}})|Easy| O(n)| O(1)||47.9%|
|0102|Binary Tree Level Order Traversal|[Go]({{< relref "/ChapterFour/0102.Binary-Tree-Level-Order-Traversal.md" >}})|Medium| O(n)| O(1)||56.2%|
|0103|Binary Tree Zigzag Level Order Traversal|[Go]({{< relref "/ChapterFour/0103.Binary-Tree-Zigzag-Level-Order-Traversal.md" >}})|Medium| O(n)| O(n)||49.8%|
|0107|Binary Tree Level Order Traversal II|[Go]({{< relref "/ChapterFour/0107.Binary-Tree-Level-Order-Traversal-II.md" >}})|Easy| O(n)| O(1)||54.8%|
|0111|Minimum Depth of Binary Tree|[Go]({{< relref "/ChapterFour/0111.Minimum-Depth-of-Binary-Tree.md" >}})|Easy| O(n)| O(1)||39.2%|
|0126|Word Ladder II|[Go]({{< relref "/ChapterFour/0126.Word-Ladder-II.md" >}})|Hard| O(n)| O(n^2)|❤️|23.4%|
|0127|Word Ladder|[Go]({{< relref "/ChapterFour/0127.Word-Ladder.md" >}})|Hard| O(n)| O(n)||31.5%|
|0130|Surrounded Regions|[Go]({{< relref "/ChapterFour/0130.Surrounded-Regions.md" >}})|Medium||||29.2%|
|0199|Binary Tree Right Side View|[Go]({{< relref "/ChapterFour/0199.Binary-Tree-Right-Side-View.md" >}})|Medium| O(n)| O(1)||55.7%|
|0200|Number of Islands|[Go]({{< relref "/ChapterFour/0200.Number-of-Islands.md" >}})|Medium| O(n^2)| O(n^2)||48.6%|
|0207|Course Schedule|[Go]({{< relref "/ChapterFour/0207.Course-Schedule.md" >}})|Medium| O(n^2)| O(n^2)||44.2%|
|0210|Course Schedule II|[Go]({{< relref "/ChapterFour/0210.Course-Schedule-II.md" >}})|Medium| O(n^2)| O(n^2)||42.2%|
|0513|Find Bottom Left Tree Value|[Go]({{< relref "/ChapterFour/0513.Find-Bottom-Left-Tree-Value.md" >}})|Medium||||62.3%|
|0515|Find Largest Value in Each Tree Row|[Go]({{< relref "/ChapterFour/0515.Find-Largest-Value-in-Each-Tree-Row.md" >}})|Medium| O(n)| O(n)||62.0%|
|0529|Minesweeper|[Go]({{< relref "/ChapterFour/0529.Minesweeper.md" >}})|Medium||||60.7%|
|0542|01 Matrix|[Go]({{< relref "/ChapterFour/0542.01-Matrix.md" >}})|Medium| O(n)| O(1)||40.6%|
|0785|Is Graph Bipartite?|[Go]({{< relref "/ChapterFour/0785.Is-Graph-Bipartite.md" >}})|Medium||||48.2%|
|0815|Bus Routes|[Go]({{< relref "/ChapterFour/0815.Bus-Routes.md" >}})|Hard||||43.2%|
|0863|All Nodes Distance K in Binary Tree|[Go]({{< relref "/ChapterFour/0863.All-Nodes-Distance-K-in-Binary-Tree.md" >}})|Medium||||57.5%|
|0864|Shortest Path to Get All Keys|[Go]({{< relref "/ChapterFour/0864.Shortest-Path-to-Get-All-Keys.md" >}})|Hard||||41.5%|
|0993|Cousins in Binary Tree|[Go]({{< relref "/ChapterFour/0993.Cousins-in-Binary-Tree.md" >}})|Easy| O(n)| O(1)||52.2%|
|1306|Jump Game III|[Go]({{< relref "/ChapterFour/1306.Jump-Game-III.md" >}})|Medium||||62.6%|
|1654|Minimum Jumps to Reach Home|[Go]({{< relref "/ChapterFour/1654.Minimum-Jumps-to-Reach-Home.md" >}})|Medium||||26.4%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

101
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# Depth First Search
| Title | Solution | Difficulty | Time | Space |收藏|
| ----- | :--------: | :----------: | :----: | :-----: | :-----: |
|98. Validate Binary Search Tree | [Go]({{< relref "/ChapterFour/0098.Validate-Binary-Search-Tree.md" >}})| Medium | O(n)| O(1)||
|99. Recover Binary Search Tree | [Go]({{< relref "/ChapterFour/0099.Recover-Binary-Search-Tree.md" >}})| Hard | O(n)| O(1)||
|100. Same Tree | [Go]({{< relref "/ChapterFour/0100.Same-Tree.md" >}})| Easy | O(n)| O(1)||
|101. Symmetric Tree | [Go]({{< relref "/ChapterFour/0101.Symmetric-Tree.md" >}})| Easy | O(n)| O(1)||
|104. Maximum Depth of Binary Tree | [Go]({{< relref "/ChapterFour/0104.Maximum-Depth-of-Binary-Tree.md" >}})| Easy | O(n)| O(1)||
|108. Convert Sorted Array to Binary Search Tree | [Go]({{< relref "/ChapterFour/0108.Convert-Sorted-Array-to-Binary-Search-Tree.md" >}})| Easy | O(n)| O(1)||
|109. Convert Sorted List to Binary Search Tree | [Go]({{< relref "/ChapterFour/0109.Convert-Sorted-List-to-Binary-Search-Tree.md" >}})| Medium | O(log n)| O(n)||
|110. Balanced Binary Tree | [Go]({{< relref "/ChapterFour/0110.Balanced-Binary-Tree.md" >}})| Easy | O(n)| O(1)||
|111. Minimum Depth of Binary Tree | [Go]({{< relref "/ChapterFour/0111.Minimum-Depth-of-Binary-Tree.md" >}})| Easy | O(n)| O(1)||
|112. Path Sum | [Go]({{< relref "/ChapterFour/0112.Path-Sum.md" >}})| Easy | O(n)| O(1)||
|113. Path Sum II | [Go]({{< relref "/ChapterFour/0113.Path-Sum-II.md" >}})| Medium | O(n)| O(1)||
|114. Flatten Binary Tree to Linked List | [Go]({{< relref "/ChapterFour/0114.Flatten-Binary-Tree-to-Linked-List.md" >}})| Medium | O(n)| O(1)||
|124. Binary Tree Maximum Path Sum | [Go]({{< relref "/ChapterFour/0124.Binary-Tree-Maximum-Path-Sum.md" >}})| Hard | O(n)| O(1)||
|129. Sum Root to Leaf Numbers | [Go]({{< relref "/ChapterFour/0129.Sum-Root-to-Leaf-Numbers.md" >}})| Medium | O(n)| O(1)||
|199. Binary Tree Right Side View | [Go]({{< relref "/ChapterFour/0199.Binary-Tree-Right-Side-View.md" >}})| Medium | O(n)| O(1)||
|200. Number of Islands | [Go]({{< relref "/ChapterFour/0200.Number-of-Islands.md" >}})| Medium | O(n^2)| O(n^2)||
|207. Course Schedule | [Go]({{< relref "/ChapterFour/0207.Course-Schedule.md" >}})| Medium | O(n^2)| O(n^2)||
|210. Course Schedule II | [Go]({{< relref "/ChapterFour/0210.Course-Schedule-II.md" >}})| Medium | O(n^2)| O(n^2)||
|257. Binary Tree Paths | [Go]({{< relref "/ChapterFour/0257.Binary-Tree-Paths.md" >}})| Easy | O(n)| O(1)||
|394. Decode String | [Go]({{< relref "/ChapterFour/0394.Decode-String.md" >}})| Medium | O(n)| O(n)||
|515. Find Largest Value in Each Tree Row | [Go]({{< relref "/ChapterFour/0515.Find-Largest-Value-in-Each-Tree-Row.md" >}})| Medium | O(n)| O(n)||
|542. 01 Matrix | [Go]({{< relref "/ChapterFour/0542.01-Matrix.md" >}})| Medium | O(n)| O(1)||
|980. Unique Paths III | [Go]({{< relref "/ChapterFour/0980.Unique-Paths-III.md" >}})| Hard | O(n log n)| O(n)||
|---------------------------------------|---------------------------------|--------------------------|-----------------------|-----------|--------|
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0017|Letter Combinations of a Phone Number|[Go]({{< relref "/ChapterFour/0017.Letter-Combinations-of-a-Phone-Number.md" >}})|Medium||||48.6%|
|0098|Validate Binary Search Tree|[Go]({{< relref "/ChapterFour/0098.Validate-Binary-Search-Tree.md" >}})|Medium| O(n)| O(1)||28.6%|
|0099|Recover Binary Search Tree|[Go]({{< relref "/ChapterFour/0099.Recover-Binary-Search-Tree.md" >}})|Hard| O(n)| O(1)||42.1%|
|0100|Same Tree|[Go]({{< relref "/ChapterFour/0100.Same-Tree.md" >}})|Easy| O(n)| O(1)||54.0%|
|0101|Symmetric Tree|[Go]({{< relref "/ChapterFour/0101.Symmetric-Tree.md" >}})|Easy| O(n)| O(1)||47.9%|
|0104|Maximum Depth of Binary Tree|[Go]({{< relref "/ChapterFour/0104.Maximum-Depth-of-Binary-Tree.md" >}})|Easy| O(n)| O(1)||67.7%|
|0105|Construct Binary Tree from Preorder and Inorder Traversal|[Go]({{< relref "/ChapterFour/0105.Construct-Binary-Tree-from-Preorder-and-Inorder-Traversal.md" >}})|Medium||||51.2%|
|0106|Construct Binary Tree from Inorder and Postorder Traversal|[Go]({{< relref "/ChapterFour/0106.Construct-Binary-Tree-from-Inorder-and-Postorder-Traversal.md" >}})|Medium||||49.1%|
|0108|Convert Sorted Array to Binary Search Tree|[Go]({{< relref "/ChapterFour/0108.Convert-Sorted-Array-to-Binary-Search-Tree.md" >}})|Easy| O(n)| O(1)||59.9%|
|0109|Convert Sorted List to Binary Search Tree|[Go]({{< relref "/ChapterFour/0109.Convert-Sorted-List-to-Binary-Search-Tree.md" >}})|Medium| O(log n)| O(n)||49.8%|
|0110|Balanced Binary Tree|[Go]({{< relref "/ChapterFour/0110.Balanced-Binary-Tree.md" >}})|Easy| O(n)| O(1)||44.6%|
|0111|Minimum Depth of Binary Tree|[Go]({{< relref "/ChapterFour/0111.Minimum-Depth-of-Binary-Tree.md" >}})|Easy| O(n)| O(1)||39.2%|
|0112|Path Sum|[Go]({{< relref "/ChapterFour/0112.Path-Sum.md" >}})|Easy| O(n)| O(1)||42.1%|
|0113|Path Sum II|[Go]({{< relref "/ChapterFour/0113.Path-Sum-II.md" >}})|Medium| O(n)| O(1)||48.6%|
|0114|Flatten Binary Tree to Linked List|[Go]({{< relref "/ChapterFour/0114.Flatten-Binary-Tree-to-Linked-List.md" >}})|Medium| O(n)| O(1)||51.4%|
|0124|Binary Tree Maximum Path Sum|[Go]({{< relref "/ChapterFour/0124.Binary-Tree-Maximum-Path-Sum.md" >}})|Hard| O(n)| O(1)||35.2%|
|0129|Sum Root to Leaf Numbers|[Go]({{< relref "/ChapterFour/0129.Sum-Root-to-Leaf-Numbers.md" >}})|Medium| O(n)| O(1)||50.6%|
|0130|Surrounded Regions|[Go]({{< relref "/ChapterFour/0130.Surrounded-Regions.md" >}})|Medium||||29.2%|
|0131|Palindrome Partitioning|[Go]({{< relref "/ChapterFour/0131.Palindrome-Partitioning.md" >}})|Medium||||51.3%|
|0199|Binary Tree Right Side View|[Go]({{< relref "/ChapterFour/0199.Binary-Tree-Right-Side-View.md" >}})|Medium| O(n)| O(1)||55.7%|
|0200|Number of Islands|[Go]({{< relref "/ChapterFour/0200.Number-of-Islands.md" >}})|Medium| O(n^2)| O(n^2)||48.6%|
|0207|Course Schedule|[Go]({{< relref "/ChapterFour/0207.Course-Schedule.md" >}})|Medium| O(n^2)| O(n^2)||44.2%|
|0210|Course Schedule II|[Go]({{< relref "/ChapterFour/0210.Course-Schedule-II.md" >}})|Medium| O(n^2)| O(n^2)||42.2%|
|0211|Design Add and Search Words Data Structure|[Go]({{< relref "/ChapterFour/0211.Design-Add-and-Search-Words-Data-Structure.md" >}})|Medium||||39.8%|
|0257|Binary Tree Paths|[Go]({{< relref "/ChapterFour/0257.Binary-Tree-Paths.md" >}})|Easy| O(n)| O(1)||53.2%|
|0329|Longest Increasing Path in a Matrix|[Go]({{< relref "/ChapterFour/0329.Longest-Increasing-Path-in-a-Matrix.md" >}})|Hard||||44.4%|
|0337|House Robber III|[Go]({{< relref "/ChapterFour/0337.House-Robber-III.md" >}})|Medium||||51.7%|
|0394|Decode String|[Go]({{< relref "/ChapterFour/0394.Decode-String.md" >}})|Medium| O(n)| O(n)||52.3%|
|0491|Increasing Subsequences|[Go]({{< relref "/ChapterFour/0491.Increasing-Subsequences.md" >}})|Medium||||47.3%|
|0494|Target Sum|[Go]({{< relref "/ChapterFour/0494.Target-Sum.md" >}})|Medium||||45.9%|
|0513|Find Bottom Left Tree Value|[Go]({{< relref "/ChapterFour/0513.Find-Bottom-Left-Tree-Value.md" >}})|Medium||||62.3%|
|0515|Find Largest Value in Each Tree Row|[Go]({{< relref "/ChapterFour/0515.Find-Largest-Value-in-Each-Tree-Row.md" >}})|Medium| O(n)| O(n)||62.0%|
|0526|Beautiful Arrangement|[Go]({{< relref "/ChapterFour/0526.Beautiful-Arrangement.md" >}})|Medium||||61.7%|
|0529|Minesweeper|[Go]({{< relref "/ChapterFour/0529.Minesweeper.md" >}})|Medium||||60.7%|
|0542|01 Matrix|[Go]({{< relref "/ChapterFour/0542.01-Matrix.md" >}})|Medium| O(n)| O(1)||40.6%|
|0547|Number of Provinces|[Go]({{< relref "/ChapterFour/0547.Number-of-Provinces.md" >}})|Medium||||60.1%|
|0563|Binary Tree Tilt|[Go]({{< relref "/ChapterFour/0563.Binary-Tree-Tilt.md" >}})|Easy||||52.6%|
|0638|Shopping Offers|[Go]({{< relref "/ChapterFour/0638.Shopping-Offers.md" >}})|Medium||||52.5%|
|0685|Redundant Connection II|[Go]({{< relref "/ChapterFour/0685.Redundant-Connection-II.md" >}})|Hard||||32.9%|
|0695|Max Area of Island|[Go]({{< relref "/ChapterFour/0695.Max-Area-of-Island.md" >}})|Medium||||64.3%|
|0721|Accounts Merge|[Go]({{< relref "/ChapterFour/0721.Accounts-Merge.md" >}})|Medium||||51.2%|
|0733|Flood Fill|[Go]({{< relref "/ChapterFour/0733.Flood-Fill.md" >}})|Easy||||55.8%|
|0753|Cracking the Safe|[Go]({{< relref "/ChapterFour/0753.Cracking-the-Safe.md" >}})|Hard||||52.0%|
|0756|Pyramid Transition Matrix|[Go]({{< relref "/ChapterFour/0756.Pyramid-Transition-Matrix.md" >}})|Medium||||55.5%|
|0778|Swim in Rising Water|[Go]({{< relref "/ChapterFour/0778.Swim-in-Rising-Water.md" >}})|Hard||||54.4%|
|0785|Is Graph Bipartite?|[Go]({{< relref "/ChapterFour/0785.Is-Graph-Bipartite.md" >}})|Medium||||48.2%|
|0802|Find Eventual Safe States|[Go]({{< relref "/ChapterFour/0802.Find-Eventual-Safe-States.md" >}})|Medium||||49.7%|
|0834|Sum of Distances in Tree|[Go]({{< relref "/ChapterFour/0834.Sum-of-Distances-in-Tree.md" >}})|Hard||||45.5%|
|0839|Similar String Groups|[Go]({{< relref "/ChapterFour/0839.Similar-String-Groups.md" >}})|Hard||||40.0%|
|0841|Keys and Rooms|[Go]({{< relref "/ChapterFour/0841.Keys-and-Rooms.md" >}})|Medium||||65.2%|
|0851|Loud and Rich|[Go]({{< relref "/ChapterFour/0851.Loud-and-Rich.md" >}})|Medium||||52.4%|
|0863|All Nodes Distance K in Binary Tree|[Go]({{< relref "/ChapterFour/0863.All-Nodes-Distance-K-in-Binary-Tree.md" >}})|Medium||||57.5%|
|0872|Leaf-Similar Trees|[Go]({{< relref "/ChapterFour/0872.Leaf-Similar-Trees.md" >}})|Easy||||64.5%|
|0897|Increasing Order Search Tree|[Go]({{< relref "/ChapterFour/0897.Increasing-Order-Search-Tree.md" >}})|Easy||||74.3%|
|0924|Minimize Malware Spread|[Go]({{< relref "/ChapterFour/0924.Minimize-Malware-Spread.md" >}})|Hard||||41.8%|
|0928|Minimize Malware Spread II|[Go]({{< relref "/ChapterFour/0928.Minimize-Malware-Spread-II.md" >}})|Hard||||41.2%|
|0947|Most Stones Removed with Same Row or Column|[Go]({{< relref "/ChapterFour/0947.Most-Stones-Removed-with-Same-Row-or-Column.md" >}})|Medium||||55.4%|
|0959|Regions Cut By Slashes|[Go]({{< relref "/ChapterFour/0959.Regions-Cut-By-Slashes.md" >}})|Medium||||66.8%|
|0968|Binary Tree Cameras|[Go]({{< relref "/ChapterFour/0968.Binary-Tree-Cameras.md" >}})|Hard||||38.5%|
|0979|Distribute Coins in Binary Tree|[Go]({{< relref "/ChapterFour/0979.Distribute-Coins-in-Binary-Tree.md" >}})|Medium||||69.5%|
|0980|Unique Paths III|[Go]({{< relref "/ChapterFour/0980.Unique-Paths-III.md" >}})|Hard| O(n log n)| O(n)||77.1%|
|1020|Number of Enclaves|[Go]({{< relref "/ChapterFour/1020.Number-of-Enclaves.md" >}})|Medium||||58.7%|
|1026|Maximum Difference Between Node and Ancestor|[Go]({{< relref "/ChapterFour/1026.Maximum-Difference-Between-Node-and-Ancestor.md" >}})|Medium||||69.1%|
|1028|Recover a Tree From Preorder Traversal|[Go]({{< relref "/ChapterFour/1028.Recover-a-Tree-From-Preorder-Traversal.md" >}})|Hard||||70.7%|
|1110|Delete Nodes And Return Forest|[Go]({{< relref "/ChapterFour/1110.Delete-Nodes-And-Return-Forest.md" >}})|Medium||||67.5%|
|1123|Lowest Common Ancestor of Deepest Leaves|[Go]({{< relref "/ChapterFour/1123.Lowest-Common-Ancestor-of-Deepest-Leaves.md" >}})|Medium||||67.8%|
|1145|Binary Tree Coloring Game|[Go]({{< relref "/ChapterFour/1145.Binary-Tree-Coloring-Game.md" >}})|Medium||||51.4%|
|1254|Number of Closed Islands|[Go]({{< relref "/ChapterFour/1254.Number-of-Closed-Islands.md" >}})|Medium||||61.5%|
|1302|Deepest Leaves Sum|[Go]({{< relref "/ChapterFour/1302.Deepest-Leaves-Sum.md" >}})|Medium||||84.1%|
|1306|Jump Game III|[Go]({{< relref "/ChapterFour/1306.Jump-Game-III.md" >}})|Medium||||62.6%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

83
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@ -5,32 +5,57 @@ type: docs
# Dynamic Programming
| Title | Solution | Difficulty | Time | Space |收藏|
| ----- | :--------: | :----------: | :----: | :-----: | :-----: |
|53. Maximum Subarray| [Go]({{< relref "/ChapterFour/0053.Maximum-Subarray.md" >}})| Easy | O(n)| O(n)||
|62. Unique Paths | [Go]({{< relref "/ChapterFour/0062.Unique-Paths.md" >}})| Medium | O(n^2)| O(n^2)||
|63. Unique Paths II | [Go]({{< relref "/ChapterFour/0063.Unique-Paths-II.md" >}})| Medium | O(n^2)| O(n^2)||
|64. Minimum Path Sum | [Go]({{< relref "/ChapterFour/0064.Minimum-Path-Sum.md" >}})| Medium | O(n^2)| O(n^2)||
|70. Climbing Stairs | [Go]({{< relref "/ChapterFour/0070.Climbing-Stairs.md" >}})| Easy | O(n)| O(n)||
|91. Decode Ways | [Go]({{< relref "/ChapterFour/0091.Decode-Ways.md" >}})| Medium | O(n)| O(n)||
|96. Unique Binary Search Trees | [Go]({{< relref "/ChapterFour/0096.Unique-Binary-Search-Trees.md" >}})| Medium | O(n)| O(n)||
|120. Triangle | [Go]({{< relref "/ChapterFour/0120.Triangle.md" >}})| Medium | O(n^2)| O(n)||
|121. Best Time to Buy and Sell Stock | [Go]({{< relref "/ChapterFour/0121.Best-Time-to-Buy-and-Sell-Stock.md" >}})| Easy | O(n)| O(1)||
|152. Maximum Product Subarray | [Go]({{< relref "/ChapterFour/0152.Maximum-Product-Subarray.md" >}})| Medium | O(n)| O(1)||
|198. House Robber | [Go]({{< relref "/ChapterFour/0198.House-Robber.md" >}})| Easy | O(n)| O(n)||
|213. House Robber II | [Go]({{< relref "/ChapterFour/0213.House-Robber-II.md" >}})| Medium | O(n)| O(n)||
|300. Longest Increasing Subsequence | [Go]({{< relref "/ChapterFour/0300.Longest-Increasing-Subsequence.md" >}})| Medium | O(n log n)| O(n)||
|309. Best Time to Buy and Sell Stock with Cooldown | [Go]({{< relref "/ChapterFour/0309.Best-Time-to-Buy-and-Sell-Stock-with-Cooldown.md" >}})| Medium | O(n)| O(n)||
|322. Coin Change | [Go]({{< relref "/ChapterFour/0322.Coin-Change.md" >}})| Medium | O(n)| O(n)||
|338. Counting Bits | [Go]({{< relref "/ChapterFour/0338.Counting-Bits.md" >}})| Medium | O(n)| O(n)||
|343. Integer Break | [Go]({{< relref "/ChapterFour/0343.Integer-Break.md" >}})| Medium | O(n^2)| O(n)||
|357. Count Numbers with Unique Digits | [Go]({{< relref "/ChapterFour/0357.Count-Numbers-with-Unique-Digits.md" >}})| Medium | O(1)| O(1)||
|392. Is Subsequence | [Go]({{< relref "/ChapterFour/0392.Is-Subsequence.md" >}})| Medium | O(n)| O(1)||
|416. Partition Equal Subset Sum | [Go]({{< relref "/ChapterFour/0416.Partition-Equal-Subset-Sum.md" >}})| Medium | O(n^2)| O(n)||
|714. Best Time to Buy and Sell Stock with Transaction Fee | [Go]({{< relref "/ChapterFour/0714.Best-Time-to-Buy-and-Sell-Stock-with-Transaction-Fee.md" >}})| Medium | O(n)| O(1)||
|746. Min Cost Climbing Stairs | [Go]({{< relref "/ChapterFour/0746.Min-Cost-Climbing-Stairs.md" >}})| Easy | O(n)| O(1)||
|838. Push Dominoes | [Go]({{< relref "/ChapterFour/0838.Push-Dominoes.md" >}})| Medium | O(n)| O(n)||
|1025. Divisor Game | [Go]({{< relref "/ChapterFour/1025.Divisor-Game.md" >}})| Easy | O(1)| O(1)||
|891. Sum of Subsequence Widths | [Go]({{< relref "/ChapterFour/0891.Sum-of-Subsequence-Widths.md" >}})| Hard | O(n log n)| O(1)||
|942. DI String Match | [Go]({{< relref "/ChapterFour/0942.DI-String-Match.md" >}})| Easy | O(n)| O(1)||
|---------------------------------------|---------------------------------|--------------------------|-----------------------|-----------|--------|
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0042|Trapping Rain Water|[Go]({{< relref "/ChapterFour/0042.Trapping-Rain-Water.md" >}})|Hard||||50.7%|
|0053|Maximum Subarray|[Go]({{< relref "/ChapterFour/0053.Maximum-Subarray.md" >}})|Easy| O(n)| O(n)||47.5%|
|0062|Unique Paths|[Go]({{< relref "/ChapterFour/0062.Unique-Paths.md" >}})|Medium| O(n^2)| O(n^2)||55.6%|
|0063|Unique Paths II|[Go]({{< relref "/ChapterFour/0063.Unique-Paths-II.md" >}})|Medium| O(n^2)| O(n^2)||35.1%|
|0064|Minimum Path Sum|[Go]({{< relref "/ChapterFour/0064.Minimum-Path-Sum.md" >}})|Medium| O(n^2)| O(n^2)||55.9%|
|0070|Climbing Stairs|[Go]({{< relref "/ChapterFour/0070.Climbing-Stairs.md" >}})|Easy| O(n)| O(n)||48.5%|
|0091|Decode Ways|[Go]({{< relref "/ChapterFour/0091.Decode-Ways.md" >}})|Medium| O(n)| O(n)||26.2%|
|0095|Unique Binary Search Trees II|[Go]({{< relref "/ChapterFour/0095.Unique-Binary-Search-Trees-II.md" >}})|Medium||||42.1%|
|0096|Unique Binary Search Trees|[Go]({{< relref "/ChapterFour/0096.Unique-Binary-Search-Trees.md" >}})|Medium| O(n)| O(n)||54.1%|
|0120|Triangle|[Go]({{< relref "/ChapterFour/0120.Triangle.md" >}})|Medium| O(n^2)| O(n)||45.5%|
|0121|Best Time to Buy and Sell Stock|[Go]({{< relref "/ChapterFour/0121.Best-Time-to-Buy-and-Sell-Stock.md" >}})|Easy| O(n)| O(1)||51.2%|
|0131|Palindrome Partitioning|[Go]({{< relref "/ChapterFour/0131.Palindrome-Partitioning.md" >}})|Medium||||51.3%|
|0152|Maximum Product Subarray|[Go]({{< relref "/ChapterFour/0152.Maximum-Product-Subarray.md" >}})|Medium| O(n)| O(1)||32.6%|
|0174|Dungeon Game|[Go]({{< relref "/ChapterFour/0174.Dungeon-Game.md" >}})|Hard||||33.1%|
|0198|House Robber|[Go]({{< relref "/ChapterFour/0198.House-Robber.md" >}})|Medium| O(n)| O(n)||42.7%|
|0213|House Robber II|[Go]({{< relref "/ChapterFour/0213.House-Robber-II.md" >}})|Medium| O(n)| O(n)||37.4%|
|0300|Longest Increasing Subsequence|[Go]({{< relref "/ChapterFour/0300.Longest-Increasing-Subsequence.md" >}})|Medium| O(n log n)| O(n)||43.6%|
|0303|Range Sum Query - Immutable|[Go]({{< relref "/ChapterFour/0303.Range-Sum-Query---Immutable.md" >}})|Easy||||47.0%|
|0309|Best Time to Buy and Sell Stock with Cooldown|[Go]({{< relref "/ChapterFour/0309.Best-Time-to-Buy-and-Sell-Stock-with-Cooldown.md" >}})|Medium| O(n)| O(n)||48.0%|
|0322|Coin Change|[Go]({{< relref "/ChapterFour/0322.Coin-Change.md" >}})|Medium| O(n)| O(n)||36.9%|
|0337|House Robber III|[Go]({{< relref "/ChapterFour/0337.House-Robber-III.md" >}})|Medium||||51.7%|
|0338|Counting Bits|[Go]({{< relref "/ChapterFour/0338.Counting-Bits.md" >}})|Medium| O(n)| O(n)||70.2%|
|0343|Integer Break|[Go]({{< relref "/ChapterFour/0343.Integer-Break.md" >}})|Medium| O(n^2)| O(n)||51.0%|
|0354|Russian Doll Envelopes|[Go]({{< relref "/ChapterFour/0354.Russian-Doll-Envelopes.md" >}})|Hard||||36.1%|
|0357|Count Numbers with Unique Digits|[Go]({{< relref "/ChapterFour/0357.Count-Numbers-with-Unique-Digits.md" >}})|Medium| O(1)| O(1)||48.7%|
|0392|Is Subsequence|[Go]({{< relref "/ChapterFour/0392.Is-Subsequence.md" >}})|Easy| O(n)| O(1)||49.5%|
|0410|Split Array Largest Sum|[Go]({{< relref "/ChapterFour/0410.Split-Array-Largest-Sum.md" >}})|Hard||||46.1%|
|0416|Partition Equal Subset Sum|[Go]({{< relref "/ChapterFour/0416.Partition-Equal-Subset-Sum.md" >}})|Medium| O(n^2)| O(n)||44.7%|
|0474|Ones and Zeroes|[Go]({{< relref "/ChapterFour/0474.Ones-and-Zeroes.md" >}})|Medium||||43.4%|
|0494|Target Sum|[Go]({{< relref "/ChapterFour/0494.Target-Sum.md" >}})|Medium||||45.9%|
|0638|Shopping Offers|[Go]({{< relref "/ChapterFour/0638.Shopping-Offers.md" >}})|Medium||||52.5%|
|0714|Best Time to Buy and Sell Stock with Transaction Fee|[Go]({{< relref "/ChapterFour/0714.Best-Time-to-Buy-and-Sell-Stock-with-Transaction-Fee.md" >}})|Medium| O(n)| O(1)||55.8%|
|0718|Maximum Length of Repeated Subarray|[Go]({{< relref "/ChapterFour/0718.Maximum-Length-of-Repeated-Subarray.md" >}})|Medium||||50.1%|
|0746|Min Cost Climbing Stairs|[Go]({{< relref "/ChapterFour/0746.Min-Cost-Climbing-Stairs.md" >}})|Easy| O(n)| O(1)||50.9%|
|0838|Push Dominoes|[Go]({{< relref "/ChapterFour/0838.Push-Dominoes.md" >}})|Medium| O(n)| O(n)||49.7%|
|0887|Super Egg Drop|[Go]({{< relref "/ChapterFour/0887.Super-Egg-Drop.md" >}})|Hard||||27.0%|
|0898|Bitwise ORs of Subarrays|[Go]({{< relref "/ChapterFour/0898.Bitwise-ORs-of-Subarrays.md" >}})|Medium||||34.0%|
|0920|Number of Music Playlists|[Go]({{< relref "/ChapterFour/0920.Number-of-Music-Playlists.md" >}})|Hard||||47.6%|
|0968|Binary Tree Cameras|[Go]({{< relref "/ChapterFour/0968.Binary-Tree-Cameras.md" >}})|Hard||||38.5%|
|0978|Longest Turbulent Subarray|[Go]({{< relref "/ChapterFour/0978.Longest-Turbulent-Subarray.md" >}})|Medium||||46.6%|
|1025|Divisor Game|[Go]({{< relref "/ChapterFour/1025.Divisor-Game.md" >}})|Easy| O(1)| O(1)||66.1%|
|1049|Last Stone Weight II|[Go]({{< relref "/ChapterFour/1049.Last-Stone-Weight-II.md" >}})|Medium||||45.0%|
|1074|Number of Submatrices That Sum to Target|[Go]({{< relref "/ChapterFour/1074.Number-of-Submatrices-That-Sum-to-Target.md" >}})|Hard||||61.4%|
|1105|Filling Bookcase Shelves|[Go]({{< relref "/ChapterFour/1105.Filling-Bookcase-Shelves.md" >}})|Medium||||57.7%|
|1235|Maximum Profit in Job Scheduling|[Go]({{< relref "/ChapterFour/1235.Maximum-Profit-in-Job-Scheduling.md" >}})|Hard||||46.9%|
|1654|Minimum Jumps to Reach Home|[Go]({{< relref "/ChapterFour/1654.Minimum-Jumps-to-Reach-Home.md" >}})|Medium||||26.4%|
|1655|Distribute Repeating Integers|[Go]({{< relref "/ChapterFour/1655.Distribute-Repeating-Integers.md" >}})|Hard||||40.7%|
|1659|Maximize Grid Happiness|[Go]({{< relref "/ChapterFour/1659.Maximize-Grid-Happiness.md" >}})|Hard||||35.2%|
|1664|Ways to Make a Fair Array|[Go]({{< relref "/ChapterFour/1664.Ways-to-Make-a-Fair-Array.md" >}})|Medium||||60.6%|
|1690|Stone Game VII|[Go]({{< relref "/ChapterFour/1690.Stone-Game-VII.md" >}})|Medium||||46.5%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

107
website/content/ChapterTwo/Hash_Table.md
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@ -5,39 +5,74 @@ type: docs
# Hash Table
| Title | Solution | Difficulty | Time | Space |收藏|
| ----- | :--------: | :----------: | :----: | :-----: | :-----: |
|1. Two Sum | [Go]({{< relref "/ChapterFour/0001.Two-Sum.md" >}})| Easy | O(n)| O(n)||
|3. Longest Substring Without Repeating Characters | [Go]({{< relref "/ChapterFour/0003.Longest-Substring-Without-Repeating-Characters.md" >}})| Medium | O(n)| O(1)|❤️|
|18. 4Sum | [Go]({{< relref "/ChapterFour/0018.4Sum.md" >}})| Medium | O(n^3)| O(n^2)|❤️|
|30. Substring with Concatenation of All Words | [Go]({{< relref "/ChapterFour/0030.Substring-with-Concatenation-of-All-Words.md" >}})| Hard | O(n)| O(n)|❤️|
|36. Valid Sudoku | [Go]({{< relref "/ChapterFour/0036.Valid-Sudoku.md" >}})| Medium | O(n^2)| O(n^2)||
|37. Sudoku Solver | [Go]({{< relref "/ChapterFour/0037.Sudoku-Solver.md" >}})| Hard | O(n^2)| O(n^2)|❤️|
|49. Group Anagrams | [Go]({{< relref "/ChapterFour/0049.Group-Anagrams.md" >}})| Medium | O(n log n)| O(n)||
|76. Minimum Window Substring | [Go]({{< relref "/ChapterFour/0076.Minimum-Window-Substring.md" >}})| Hard | O(n)| O(n)|❤️|
|94. Binary Tree Inorder Traversal | [Go]({{< relref "/ChapterFour/0094.Binary-Tree-Inorder-Traversal.md" >}})| Medium | O(n)| O(1)||
|138. Copy List with Random Pointer | [Go]()| Medium | O(n)| O(1)||
|202. Happy Number | [Go]({{< relref "/ChapterFour/0202.Happy-Number.md" >}})| Easy | O(log n)| O(1)||
|205. Isomorphic Strings | [Go]({{< relref "/ChapterFour/0205.Isomorphic-Strings.md" >}})| Easy | O(log n)| O(n)||
|217. Contains Duplicate | [Go]({{< relref "/ChapterFour/0217.Contains-Duplicate.md" >}})| Easy | O(n)| O(n)||
|219. Contains Duplicate II | [Go]({{< relref "/ChapterFour/0219.Contains-Duplicate-II.md" >}})| Easy | O(n)| O(n)||
|242. Valid Anagram | [Go]({{< relref "/ChapterFour/0242.Valid-Anagram.md" >}})| Easy | O(n)| O(n) ||
|274. H-Index | [Go]({{< relref "/ChapterFour/0274.H-Index.md" >}})| Medium | O(n)| O(n) ||
|290. Word Pattern | [Go]({{< relref "/ChapterFour/0290.Word-Pattern.md" >}})| Easy | O(n)| O(n) ||
|347. Top K Frequent Elements | [Go]({{< relref "/ChapterFour/0347.Top-K-Frequent-Elements.md" >}})| Medium | O(n)| O(n) ||
|349. Intersection of Two Arrays | [Go]({{< relref "/ChapterFour/0349.Intersection-of-Two-Arrays.md" >}})| Easy | O(n)| O(n) ||
|350. Intersection of Two Arrays II | [Go]({{< relref "/ChapterFour/0350.Intersection-of-Two-Arrays-II.md" >}})| Easy | O(n)| O(n) ||
|438. Find All Anagrams in a String | [Go]({{< relref "/ChapterFour/0438.Find-All-Anagrams-in-a-String.md" >}})| Easy | O(n)| O(1) ||
|447. Number of Boomerangs | [Go]({{< relref "/ChapterFour/0447.Number-of-Boomerangs.md" >}})| Easy | O(n)| O(1) ||
|451. Sort Characters By Frequency | [Go]({{< relref "/ChapterFour/0451.Sort-Characters-By-Frequency.md" >}})| Medium | O(n log n)| O(1) ||
|454. 4Sum II | [Go]({{< relref "/ChapterFour/0454.4Sum-II.md" >}})| Medium | O(n^2)| O(n) ||
|648. Replace Words | [Go]({{< relref "/ChapterFour/0648.Replace-Words.md" >}})| Medium | O(n)| O(n) ||
|676. Implement Magic Dictionary | [Go]({{< relref "/ChapterFour/0676.Implement-Magic-Dictionary.md" >}})| Medium | O(n)| O(n) ||
|720. Longest Word in Dictionary | [Go]({{< relref "/ChapterFour/0720.Longest-Word-in-Dictionary.md" >}})| Easy | O(n)| O(n) ||
|726. Number of Atoms | [Go]({{< relref "/ChapterFour/0726.Number-of-Atoms.md" >}})| Hard | O(n)| O(n) |❤️|
|739. Daily Temperatures | [Go]({{< relref "/ChapterFour/0739.Daily-Temperatures.md" >}})| Medium | O(n)| O(n) ||
|710. Random Pick with Blacklist | [Go]({{< relref "/ChapterFour/0710.Random-Pick-with-Blacklist.md" >}})| Hard | O(n)| O(n) ||
|895. Maximum Frequency Stack | [Go]({{< relref "/ChapterFour/0895.Maximum-Frequency-Stack.md" >}})| Hard | O(n)| O(n) ||
|930. Binary Subarrays With Sum | [Go]({{< relref "/ChapterFour/0930.Binary-Subarrays-With-Sum.md" >}})| Medium | O(n)| O(n) |❤️|
|992. Subarrays with K Different Integers | [Go]({{< relref "/ChapterFour/0992.Subarrays-with-K-Different-Integers.md" >}})| Hard | O(n)| O(n) |❤️|
|---------------------------------------|---------------------------------|--------------------------|-----------------------|-----------|--------|
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0001|Two Sum|[Go]({{< relref "/ChapterFour/0001.Two-Sum.md" >}})|Easy| O(n)| O(n)||46.2%|
|0003|Longest Substring Without Repeating Characters|[Go]({{< relref "/ChapterFour/0003.Longest-Substring-Without-Repeating-Characters.md" >}})|Medium| O(n)| O(1)|❤️|31.3%|
|0018|4Sum|[Go]({{< relref "/ChapterFour/0018.4Sum.md" >}})|Medium| O(n^3)| O(n^2)|❤️|34.6%|
|0030|Substring with Concatenation of All Words|[Go]({{< relref "/ChapterFour/0030.Substring-with-Concatenation-of-All-Words.md" >}})|Hard| O(n)| O(n)|❤️|26.0%|
|0036|Valid Sudoku|[Go]({{< relref "/ChapterFour/0036.Valid-Sudoku.md" >}})|Medium| O(n^2)| O(n^2)||50.2%|
|0037|Sudoku Solver|[Go]({{< relref "/ChapterFour/0037.Sudoku-Solver.md" >}})|Hard| O(n^2)| O(n^2)|❤️|45.9%|
|0049|Group Anagrams|[Go]({{< relref "/ChapterFour/0049.Group-Anagrams.md" >}})|Medium| O(n log n)| O(n)||58.8%|
|0076|Minimum Window Substring|[Go]({{< relref "/ChapterFour/0076.Minimum-Window-Substring.md" >}})|Hard| O(n)| O(n)|❤️|35.7%|
|0094|Binary Tree Inorder Traversal|[Go]({{< relref "/ChapterFour/0094.Binary-Tree-Inorder-Traversal.md" >}})|Medium| O(n)| O(1)||65.4%|
|0136|Single Number|[Go]({{< relref "/ChapterFour/0136.Single-Number.md" >}})|Easy||||66.4%|
|0187|Repeated DNA Sequences|[Go]({{< relref "/ChapterFour/0187.Repeated-DNA-Sequences.md" >}})|Medium||||41.2%|
|0202|Happy Number|[Go]({{< relref "/ChapterFour/0202.Happy-Number.md" >}})|Easy| O(log n)| O(1)||51.1%|
|0204|Count Primes|[Go]({{< relref "/ChapterFour/0204.Count-Primes.md" >}})|Easy||||32.1%|
|0205|Isomorphic Strings|[Go]({{< relref "/ChapterFour/0205.Isomorphic-Strings.md" >}})|Easy| O(log n)| O(n)||40.3%|
|0217|Contains Duplicate|[Go]({{< relref "/ChapterFour/0217.Contains-Duplicate.md" >}})|Easy| O(n)| O(n)||56.5%|
|0219|Contains Duplicate II|[Go]({{< relref "/ChapterFour/0219.Contains-Duplicate-II.md" >}})|Easy| O(n)| O(n)||38.5%|
|0242|Valid Anagram|[Go]({{< relref "/ChapterFour/0242.Valid-Anagram.md" >}})|Easy| O(n)| O(n) ||57.9%|
|0274|H-Index|[Go]({{< relref "/ChapterFour/0274.H-Index.md" >}})|Medium| O(n)| O(n) ||36.3%|
|0290|Word Pattern|[Go]({{< relref "/ChapterFour/0290.Word-Pattern.md" >}})|Easy| O(n)| O(n) ||38.2%|
|0347|Top K Frequent Elements|[Go]({{< relref "/ChapterFour/0347.Top-K-Frequent-Elements.md" >}})|Medium| O(n)| O(n) ||62.2%|
|0349|Intersection of Two Arrays|[Go]({{< relref "/ChapterFour/0349.Intersection-of-Two-Arrays.md" >}})|Easy| O(n)| O(n) ||64.4%|
|0350|Intersection of Two Arrays II|[Go]({{< relref "/ChapterFour/0350.Intersection-of-Two-Arrays-II.md" >}})|Easy| O(n)| O(n) ||51.9%|
|0387|First Unique Character in a String|[Go]({{< relref "/ChapterFour/0387.First-Unique-Character-in-a-String.md" >}})|Easy||||53.7%|
|0389|Find the Difference|[Go]({{< relref "/ChapterFour/0389.Find-the-Difference.md" >}})|Easy||||57.7%|
|0409|Longest Palindrome|[Go]({{< relref "/ChapterFour/0409.Longest-Palindrome.md" >}})|Easy||||52.1%|
|0438|Find All Anagrams in a String|[Go]({{< relref "/ChapterFour/0438.Find-All-Anagrams-in-a-String.md" >}})|Medium| O(n)| O(1) ||44.7%|
|0447|Number of Boomerangs|[Go]({{< relref "/ChapterFour/0447.Number-of-Boomerangs.md" >}})|Medium| O(n)| O(1) ||52.3%|
|0451|Sort Characters By Frequency|[Go]({{< relref "/ChapterFour/0451.Sort-Characters-By-Frequency.md" >}})|Medium| O(n log n)| O(1) ||64.1%|
|0454|4Sum II|[Go]({{< relref "/ChapterFour/0454.4Sum-II.md" >}})|Medium| O(n^2)| O(n) ||54.5%|
|0463|Island Perimeter|[Go]({{< relref "/ChapterFour/0463.Island-Perimeter.md" >}})|Easy||||66.5%|
|0500|Keyboard Row|[Go]({{< relref "/ChapterFour/0500.Keyboard-Row.md" >}})|Easy||||65.5%|
|0508|Most Frequent Subtree Sum|[Go]({{< relref "/ChapterFour/0508.Most-Frequent-Subtree-Sum.md" >}})|Medium||||58.9%|
|0575|Distribute Candies|[Go]({{< relref "/ChapterFour/0575.Distribute-Candies.md" >}})|Easy||||61.9%|
|0594|Longest Harmonious Subsequence|[Go]({{< relref "/ChapterFour/0594.Longest-Harmonious-Subsequence.md" >}})|Easy||||47.7%|
|0599|Minimum Index Sum of Two Lists|[Go]({{< relref "/ChapterFour/0599.Minimum-Index-Sum-of-Two-Lists.md" >}})|Easy||||51.5%|
|0632|Smallest Range Covering Elements from K Lists|[Go]({{< relref "/ChapterFour/0632.Smallest-Range-Covering-Elements-from-K-Lists.md" >}})|Hard||||53.9%|
|0645|Set Mismatch|[Go]({{< relref "/ChapterFour/0645.Set-Mismatch.md" >}})|Easy||||42.5%|
|0648|Replace Words|[Go]({{< relref "/ChapterFour/0648.Replace-Words.md" >}})|Medium| O(n)| O(n) ||58.2%|
|0676|Implement Magic Dictionary|[Go]({{< relref "/ChapterFour/0676.Implement-Magic-Dictionary.md" >}})|Medium| O(n)| O(n) ||55.1%|
|0705|Design HashSet|[Go]({{< relref "/ChapterFour/0705.Design-HashSet.md" >}})|Easy||||64.6%|
|0706|Design HashMap|[Go]({{< relref "/ChapterFour/0706.Design-HashMap.md" >}})|Easy||||62.5%|
|0710|Random Pick with Blacklist|[Go]({{< relref "/ChapterFour/0710.Random-Pick-with-Blacklist.md" >}})|Hard| O(n)| O(n) ||32.7%|
|0718|Maximum Length of Repeated Subarray|[Go]({{< relref "/ChapterFour/0718.Maximum-Length-of-Repeated-Subarray.md" >}})|Medium||||50.1%|
|0720|Longest Word in Dictionary|[Go]({{< relref "/ChapterFour/0720.Longest-Word-in-Dictionary.md" >}})|Easy| O(n)| O(n) ||49.0%|
|0726|Number of Atoms|[Go]({{< relref "/ChapterFour/0726.Number-of-Atoms.md" >}})|Hard| O(n)| O(n) |❤️|51.0%|
|0739|Daily Temperatures|[Go]({{< relref "/ChapterFour/0739.Daily-Temperatures.md" >}})|Medium| O(n)| O(n) ||64.3%|
|0748|Shortest Completing Word|[Go]({{< relref "/ChapterFour/0748.Shortest-Completing-Word.md" >}})|Easy||||57.4%|
|0771|Jewels and Stones|[Go]({{< relref "/ChapterFour/0771.Jewels-and-Stones.md" >}})|Easy||||86.8%|
|0781|Rabbits in Forest|[Go]({{< relref "/ChapterFour/0781.Rabbits-in-Forest.md" >}})|Medium||||55.4%|
|0811|Subdomain Visit Count|[Go]({{< relref "/ChapterFour/0811.Subdomain-Visit-Count.md" >}})|Easy||||71.2%|
|0884|Uncommon Words from Two Sentences|[Go]({{< relref "/ChapterFour/0884.Uncommon-Words-from-Two-Sentences.md" >}})|Easy||||63.9%|
|0895|Maximum Frequency Stack|[Go]({{< relref "/ChapterFour/0895.Maximum-Frequency-Stack.md" >}})|Hard| O(n)| O(n) ||62.1%|
|0930|Binary Subarrays With Sum|[Go]({{< relref "/ChapterFour/0930.Binary-Subarrays-With-Sum.md" >}})|Medium| O(n)| O(n) |❤️|44.3%|
|0953|Verifying an Alien Dictionary|[Go]({{< relref "/ChapterFour/0953.Verifying-an-Alien-Dictionary.md" >}})|Easy||||52.5%|
|0961|N-Repeated Element in Size 2N Array|[Go]({{< relref "/ChapterFour/0961.N-Repeated-Element-in-Size-2N-Array.md" >}})|Easy||||74.4%|
|0970|Powerful Integers|[Go]({{< relref "/ChapterFour/0970.Powerful-Integers.md" >}})|Easy||||39.9%|
|0981|Time Based Key-Value Store|[Go]({{< relref "/ChapterFour/0981.Time-Based-Key-Value-Store.md" >}})|Medium||||53.9%|
|0992|Subarrays with K Different Integers|[Go]({{< relref "/ChapterFour/0992.Subarrays-with-K-Different-Integers.md" >}})|Hard| O(n)| O(n) |❤️|50.4%|
|1002|Find Common Characters|[Go]({{< relref "/ChapterFour/1002.Find-Common-Characters.md" >}})|Easy||||68.1%|
|1078|Occurrences After Bigram|[Go]({{< relref "/ChapterFour/1078.Occurrences-After-Bigram.md" >}})|Easy||||64.9%|
|1160|Find Words That Can Be Formed by Characters|[Go]({{< relref "/ChapterFour/1160.Find-Words-That-Can-Be-Formed-by-Characters.md" >}})|Easy||||67.5%|
|1189|Maximum Number of Balloons|[Go]({{< relref "/ChapterFour/1189.Maximum-Number-of-Balloons.md" >}})|Easy||||61.8%|
|1207|Unique Number of Occurrences|[Go]({{< relref "/ChapterFour/1207.Unique-Number-of-Occurrences.md" >}})|Easy||||71.6%|
|1512|Number of Good Pairs|[Go]({{< relref "/ChapterFour/1512.Number-of-Good-Pairs.md" >}})|Easy||||87.9%|
|1539|Kth Missing Positive Number|[Go]({{< relref "/ChapterFour/1539.Kth-Missing-Positive-Number.md" >}})|Easy||||55.3%|
|1640|Check Array Formation Through Concatenation|[Go]({{< relref "/ChapterFour/1640.Check-Array-Formation-Through-Concatenation.md" >}})|Easy||||62.3%|
|1679|Max Number of K-Sum Pairs|[Go]({{< relref "/ChapterFour/1679.Max-Number-of-K-Sum-Pairs.md" >}})|Medium||||52.0%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

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| Title | Solution | Difficulty | Time | Space |收藏|
| ----- | :--------: | :----------: | :----: | :-----: | :-----: |
|2. Add Two Numbers | [Go]({{< relref "/ChapterFour/0002.Add-Two-Numbers.md" >}})| Medium | O(n)| O(1)||
|19. Remove Nth Node From End of List | [Go]({{< relref "/ChapterFour/0019.Remove-Nth-Node-From-End-of-List.md" >}})| Medium | O(n)| O(1)||
|21. Merge Two Sorted Lists | [Go]({{< relref "/ChapterFour/0021.Merge-Two-Sorted-Lists.md" >}})| Easy | O(log n)| O(1)||
|23. Merge k Sorted Lists| [Go]({{< relref "/ChapterFour/0023.Merge-k-Sorted-Lists.md" >}})| Hard | O(log n)| O(1)|❤️|
|24. Swap Nodes in Pairs | [Go]({{< relref "/ChapterFour/0024.Swap-Nodes-in-Pairs.md" >}})| Medium | O(n)| O(1)||
|25. Reverse Nodes in k-Group | [Go]({{< relref "/ChapterFour/0025.Reverse-Nodes-in-k-Group.md" >}})| Hard | O(log n)| O(1)|❤️|
|61. Rotate List | [Go]({{< relref "/ChapterFour/0061.Rotate-List.md" >}})| Medium | O(n)| O(1)||
|82. Remove Duplicates from Sorted List II | [Go]({{< relref "/ChapterFour/0082.Remove-Duplicates-from-Sorted-List-II.md" >}})| Medium | O(n)| O(1)||
|83. Remove Duplicates from Sorted List | [Go]({{< relref "/ChapterFour/0083.Remove-Duplicates-from-Sorted-List.md" >}})| Easy | O(n)| O(1)||
|86. Partition List | [Go]({{< relref "/ChapterFour/0086.Partition-List.md" >}})| Medium | O(n)| O(1)|❤️|
|92. Reverse Linked List II | [Go]({{< relref "/ChapterFour/0092.Reverse-Linked-List-II.md" >}})| Medium | O(n)| O(1)|❤️|
|109. Convert Sorted List to Binary Search Tree | [Go]({{< relref "/ChapterFour/0109.Convert-Sorted-List-to-Binary-Search-Tree.md" >}})| Medium | O(log n)| O(n)||
|141. Linked List Cycle | [Go]({{< relref "/ChapterFour/0141.Linked-List-Cycle.md" >}})| Easy | O(n)| O(1)|❤️|
|142. Linked List Cycle II | [Go]({{< relref "/ChapterFour/0142.Linked-List-Cycle-II.md" >}})| Medium | O(n)| O(1)|❤️|
|143. Reorder List | [Go]({{< relref "/ChapterFour/0143.Reorder-List.md" >}})| Medium | O(n)| O(1)|❤️|
|147. Insertion Sort List | [Go]({{< relref "/ChapterFour/0147.Insertion-Sort-List.md" >}})| Medium | O(n)| O(1)|❤️|
|148. Sort List | [Go]({{< relref "/ChapterFour/0148.Sort-List.md" >}})| Medium | O(n log n)| O(n)|❤️|
|160. Intersection of Two Linked Lists | [Go]({{< relref "/ChapterFour/0160.Intersection-of-Two-Linked-Lists.md" >}})| Easy | O(n)| O(1)|❤️|
|203. Remove Linked List Elements | [Go]({{< relref "/ChapterFour/0203.Remove-Linked-List-Elements.md" >}})| Easy | O(n)| O(1)||
|206. Reverse Linked List | [Go]({{< relref "/ChapterFour/0206.Reverse-Linked-List.md" >}})| Easy | O(n)| O(1)||
|234. Palindrome Linked List | [Go]({{< relref "/ChapterFour/0234.Palindrome-Linked-List.md" >}})| Easy | O(n)| O(1)||
|237. Delete Node in a Linked List | [Go]({{< relref "/ChapterFour/0237.Delete-Node-in-a-Linked-List.md" >}})| Easy | O(n)| O(1)||
|328. Odd Even Linked List | [Go]({{< relref "/ChapterFour/0328.Odd-Even-Linked-List.md" >}})| Medium | O(n)| O(1)||
|445. Add Two Numbers II | [Go]({{< relref "/ChapterFour/0445.Add-Two-Numbers-II.md" >}})| Medium | O(n)| O(n)||
|725. Split Linked List in Parts | [Go]({{< relref "/ChapterFour/0725.Split-Linked-List-in-Parts.md" >}})| Medium | O(n)| O(1)||
|817. Linked List Components | [Go]({{< relref "/ChapterFour/0817.Linked-List-Components.md" >}})| Medium | O(n)| O(1)||
|707. Design Linked List | [Go]({{< relref "/ChapterFour/0707.Design-Linked-List.md" >}})| Easy | O(n)| O(1)||
|876. Middle of the Linked List | [Go]({{< relref "/ChapterFour/0876.Middle-of-the-Linked-List.md" >}})| Easy | O(n)| O(1)|❤️|
|1019. Next Greater Node In Linked List | [Go]({{< relref "/ChapterFour/1019.Next-Greater-Node-In-Linked-List.md" >}})| Medium | O(n)| O(1)||
|---------------------------------------------|---------------------------------|--------------------------|-----------------------|-----------|--------|
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0002|Add Two Numbers|[Go]({{< relref "/ChapterFour/0002.Add-Two-Numbers.md" >}})|Medium| O(n)| O(1)||35.2%|
|0019|Remove Nth Node From End of List|[Go]({{< relref "/ChapterFour/0019.Remove-Nth-Node-From-End-of-List.md" >}})|Medium| O(n)| O(1)||35.6%|
|0021|Merge Two Sorted Lists|[Go]({{< relref "/ChapterFour/0021.Merge-Two-Sorted-Lists.md" >}})|Easy| O(log n)| O(1)||55.6%|
|0023|Merge k Sorted Lists|[Go]({{< relref "/ChapterFour/0023.Merge-k-Sorted-Lists.md" >}})|Hard| O(log n)| O(1)|❤️|42.0%|
|0024|Swap Nodes in Pairs|[Go]({{< relref "/ChapterFour/0024.Swap-Nodes-in-Pairs.md" >}})|Medium| O(n)| O(1)||52.6%|
|0025|Reverse Nodes in k-Group|[Go]({{< relref "/ChapterFour/0025.Reverse-Nodes-in-k-Group.md" >}})|Hard| O(log n)| O(1)|❤️|44.2%|
|0061|Rotate List|[Go]({{< relref "/ChapterFour/0061.Rotate-List.md" >}})|Medium| O(n)| O(1)||31.6%|
|0082|Remove Duplicates from Sorted List II|[Go]({{< relref "/ChapterFour/0082.Remove-Duplicates-from-Sorted-List-II.md" >}})|Medium| O(n)| O(1)||39.0%|
|0083|Remove Duplicates from Sorted List|[Go]({{< relref "/ChapterFour/0083.Remove-Duplicates-from-Sorted-List.md" >}})|Easy| O(n)| O(1)||46.3%|
|0086|Partition List|[Go]({{< relref "/ChapterFour/0086.Partition-List.md" >}})|Medium| O(n)| O(1)|❤️|43.0%|
|0092|Reverse Linked List II|[Go]({{< relref "/ChapterFour/0092.Reverse-Linked-List-II.md" >}})|Medium| O(n)| O(1)|❤️|40.2%|
|0109|Convert Sorted List to Binary Search Tree|[Go]({{< relref "/ChapterFour/0109.Convert-Sorted-List-to-Binary-Search-Tree.md" >}})|Medium| O(log n)| O(n)||49.8%|
|0141|Linked List Cycle|[Go]({{< relref "/ChapterFour/0141.Linked-List-Cycle.md" >}})|Easy| O(n)| O(1)|❤️|42.2%|
|0142|Linked List Cycle II|[Go]({{< relref "/ChapterFour/0142.Linked-List-Cycle-II.md" >}})|Medium| O(n)| O(1)|❤️|39.3%|
|0143|Reorder List|[Go]({{< relref "/ChapterFour/0143.Reorder-List.md" >}})|Medium| O(n)| O(1)|❤️|40.2%|
|0147|Insertion Sort List|[Go]({{< relref "/ChapterFour/0147.Insertion-Sort-List.md" >}})|Medium| O(n)| O(1)|❤️|44.1%|
|0148|Sort List|[Go]({{< relref "/ChapterFour/0148.Sort-List.md" >}})|Medium| O(n log n)| O(n)|❤️|45.8%|
|0160|Intersection of Two Linked Lists|[Go]({{< relref "/ChapterFour/0160.Intersection-of-Two-Linked-Lists.md" >}})|Easy| O(n)| O(1)|❤️|42.6%|
|0203|Remove Linked List Elements|[Go]({{< relref "/ChapterFour/0203.Remove-Linked-List-Elements.md" >}})|Easy| O(n)| O(1)||39.0%|
|0206|Reverse Linked List|[Go]({{< relref "/ChapterFour/0206.Reverse-Linked-List.md" >}})|Easy| O(n)| O(1)||64.8%|
|0234|Palindrome Linked List|[Go]({{< relref "/ChapterFour/0234.Palindrome-Linked-List.md" >}})|Easy| O(n)| O(1)||40.2%|
|0237|Delete Node in a Linked List|[Go]({{< relref "/ChapterFour/0237.Delete-Node-in-a-Linked-List.md" >}})|Easy| O(n)| O(1)||66.3%|
|0328|Odd Even Linked List|[Go]({{< relref "/ChapterFour/0328.Odd-Even-Linked-List.md" >}})|Medium| O(n)| O(1)||56.9%|
|0445|Add Two Numbers II|[Go]({{< relref "/ChapterFour/0445.Add-Two-Numbers-II.md" >}})|Medium| O(n)| O(n)||56.0%|
|0707|Design Linked List|[Go]({{< relref "/ChapterFour/0707.Design-Linked-List.md" >}})|Medium| O(n)| O(1)||25.7%|
|0725|Split Linked List in Parts|[Go]({{< relref "/ChapterFour/0725.Split-Linked-List-in-Parts.md" >}})|Medium| O(n)| O(1)||52.8%|
|0817|Linked List Components|[Go]({{< relref "/ChapterFour/0817.Linked-List-Components.md" >}})|Medium| O(n)| O(1)||57.6%|
|0876|Middle of the Linked List|[Go]({{< relref "/ChapterFour/0876.Middle-of-the-Linked-List.md" >}})|Easy| O(n)| O(1)|❤️|68.9%|
|1019|Next Greater Node In Linked List|[Go]({{< relref "/ChapterFour/1019.Next-Greater-Node-In-Linked-List.md" >}})|Medium| O(n)| O(1)||58.2%|
|1171|Remove Zero Sum Consecutive Nodes from Linked List|[Go]({{< relref "/ChapterFour/1171.Remove-Zero-Sum-Consecutive-Nodes-from-Linked-List.md" >}})|Medium||||41.4%|
|1290|Convert Binary Number in a Linked List to Integer|[Go]({{< relref "/ChapterFour/1290.Convert-Binary-Number-in-a-Linked-List-to-Integer.md" >}})|Easy||||81.6%|
|1669|Merge In Between Linked Lists|[Go]({{< relref "/ChapterFour/1669.Merge-In-Between-Linked-Lists.md" >}})|Medium||||78.2%|
|1670|Design Front Middle Back Queue|[Go]({{< relref "/ChapterFour/1670.Design-Front-Middle-Back-Queue.md" >}})|Medium||||54.6%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

95
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@ -5,24 +5,77 @@ type: docs
# Math
| Title | Solution | Difficulty | Time | Space |收藏|
| ----- | :--------: | :----------: | :----: | :-----: | :-----: |
|2. Add Two Numbers | [Go]({{< relref "/ChapterFour/0002.Add-Two-Numbers.md" >}})| Medium | O(n)| O(1)||
|50. Pow(x, n) | [Go]({{< relref "/ChapterFour/0050.Powx-n.md" >}})| Medium | O(log n)| O(1)||
|60. Permutation Sequence | [Go]({{< relref "/ChapterFour/0060.Permutation-Sequence.md" >}})| Medium | O(n log n)| O(1)||
|69. Sqrt(x) | [Go]({{< relref "/ChapterFour/0069.Sqrtx.md" >}})| Easy | O(log n)| O(1)||
|202. Happy Number | [Go]({{< relref "/ChapterFour/0202.Happy-Number.md" >}})| Easy | O(log n)| O(1)||
|224. Basic Calculator | [Go]({{< relref "/ChapterFour/0224.Basic-Calculator.md" >}})| Hard | O(n)| O(n)||
|231. Power of Two | [Go]({{< relref "/ChapterFour/0231.Power-of-Two.md" >}})| Easy | O(1)| O(1)||
|263. Ugly Number | [Go]({{< relref "/ChapterFour/0263.Ugly-Number.md" >}})| Easy | O(log n)| O(1)||
|326. Power of Three | [Go]({{< relref "/ChapterFour/0326.Power-of-Three.md" >}})| Easy | O(1)| O(1)||
|343. Integer Break | [Go]({{< relref "/ChapterFour/0343.Integer-Break.md" >}})| Medium | O(n^2)| O(n)||
|357. Count Numbers with Unique Digits | [Go]({{< relref "/ChapterFour/0357.Count-Numbers-with-Unique-Digits.md" >}})| Medium | O(1)| O(1)||
|628. Maximum Product of Three Numbers | [Go]({{< relref "/ChapterFour/0628.Maximum-Product-of-Three-Numbers.md" >}})| Easy | O(n)| O(1)||
|885. Spiral Matrix III | [Go]({{< relref "/ChapterFour/0885.Spiral-Matrix-III.md" >}})| Medium | O(n^2)| O(1)||
|891. Sum of Subsequence Widths | [Go]({{< relref "/ChapterFour/0891.Sum-of-Subsequence-Widths.md" >}})| Hard | O(n log n)| O(1)||
|942. DI String Match | [Go]({{< relref "/ChapterFour/0942.DI-String-Match.md" >}})| Easy | O(n)| O(1)||
|976. Largest Perimeter Triangle | [Go]({{< relref "/ChapterFour/0976.Largest-Perimeter-Triangle.md" >}})| Easy | O(n log n)| O(log n) ||
|996. Number of Squareful Arrays | [Go]({{< relref "/ChapterFour/0996.Number-of-Squareful-Arrays.md" >}})| Hard | O(n log n)| O(n) ||
|1025. Divisor Game | [Go]({{< relref "/ChapterFour/1025.Divisor-Game.md" >}})| Easy | O(1)| O(1)||
|---------------------------------------|---------------------------------|--------------------------|-----------------------|-----------|--------|
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0002|Add Two Numbers|[Go]({{< relref "/ChapterFour/0002.Add-Two-Numbers.md" >}})|Medium| O(n)| O(1)||35.2%|
|0007|Reverse Integer|[Go]({{< relref "/ChapterFour/0007.Reverse-Integer.md" >}})|Easy||||25.8%|
|0009|Palindrome Number|[Go]({{< relref "/ChapterFour/0009.Palindrome-Number.md" >}})|Easy||||49.5%|
|0013|Roman to Integer|[Go]({{< relref "/ChapterFour/0013.Roman-to-Integer.md" >}})|Easy||||56.4%|
|0029|Divide Two Integers|[Go]({{< relref "/ChapterFour/0029.Divide-Two-Integers.md" >}})|Medium||||16.6%|
|0050|Pow(x, n)|[Go]({{< relref "/ChapterFour/0050.Powx-n.md" >}})|Medium| O(log n)| O(1)||30.8%|
|0060|Permutation Sequence|[Go]({{< relref "/ChapterFour/0060.Permutation-Sequence.md" >}})|Hard| O(n log n)| O(1)||39.2%|
|0067|Add Binary|[Go]({{< relref "/ChapterFour/0067.Add-Binary.md" >}})|Easy||||46.6%|
|0069|Sqrt(x)|[Go]({{< relref "/ChapterFour/0069.Sqrtx.md" >}})|Easy| O(log n)| O(1)||34.8%|
|0168|Excel Sheet Column Title|[Go]({{< relref "/ChapterFour/0168.Excel-Sheet-Column-Title.md" >}})|Easy||||31.6%|
|0171|Excel Sheet Column Number|[Go]({{< relref "/ChapterFour/0171.Excel-Sheet-Column-Number.md" >}})|Easy||||56.7%|
|0172|Factorial Trailing Zeroes|[Go]({{< relref "/ChapterFour/0172.Factorial-Trailing-Zeroes.md" >}})|Easy||||38.4%|
|0202|Happy Number|[Go]({{< relref "/ChapterFour/0202.Happy-Number.md" >}})|Easy| O(log n)| O(1)||51.1%|
|0204|Count Primes|[Go]({{< relref "/ChapterFour/0204.Count-Primes.md" >}})|Easy||||32.1%|
|0223|Rectangle Area|[Go]({{< relref "/ChapterFour/0223.Rectangle-Area.md" >}})|Medium||||38.1%|
|0224|Basic Calculator|[Go]({{< relref "/ChapterFour/0224.Basic-Calculator.md" >}})|Hard| O(n)| O(n)||38.0%|
|0231|Power of Two|[Go]({{< relref "/ChapterFour/0231.Power-of-Two.md" >}})|Easy| O(1)| O(1)||43.8%|
|0258|Add Digits|[Go]({{< relref "/ChapterFour/0258.Add-Digits.md" >}})|Easy||||58.3%|
|0263|Ugly Number|[Go]({{< relref "/ChapterFour/0263.Ugly-Number.md" >}})|Easy| O(log n)| O(1)||41.7%|
|0268|Missing Number|[Go]({{< relref "/ChapterFour/0268.Missing-Number.md" >}})|Easy||||53.4%|
|0326|Power of Three|[Go]({{< relref "/ChapterFour/0326.Power-of-Three.md" >}})|Easy| O(1)| O(1)||42.1%|
|0343|Integer Break|[Go]({{< relref "/ChapterFour/0343.Integer-Break.md" >}})|Medium| O(n^2)| O(n)||51.0%|
|0357|Count Numbers with Unique Digits|[Go]({{< relref "/ChapterFour/0357.Count-Numbers-with-Unique-Digits.md" >}})|Medium| O(1)| O(1)||48.7%|
|0367|Valid Perfect Square|[Go]({{< relref "/ChapterFour/0367.Valid-Perfect-Square.md" >}})|Easy||||42.0%|
|0372|Super Pow|[Go]({{< relref "/ChapterFour/0372.Super-Pow.md" >}})|Medium||||36.6%|
|0397|Integer Replacement|[Go]({{< relref "/ChapterFour/0397.Integer-Replacement.md" >}})|Medium||||33.4%|
|0441|Arranging Coins|[Go]({{< relref "/ChapterFour/0441.Arranging-Coins.md" >}})|Easy||||42.3%|
|0447|Number of Boomerangs|[Go]({{< relref "/ChapterFour/0447.Number-of-Boomerangs.md" >}})|Medium||||52.3%|
|0453|Minimum Moves to Equal Array Elements|[Go]({{< relref "/ChapterFour/0453.Minimum-Moves-to-Equal-Array-Elements.md" >}})|Easy||||50.7%|
|0483|Smallest Good Base|[Go]({{< relref "/ChapterFour/0483.Smallest-Good-Base.md" >}})|Hard||||36.2%|
|0507|Perfect Number|[Go]({{< relref "/ChapterFour/0507.Perfect-Number.md" >}})|Easy||||36.0%|
|0537|Complex Number Multiplication|[Go]({{< relref "/ChapterFour/0537.Complex-Number-Multiplication.md" >}})|Medium||||68.3%|
|0598|Range Addition II|[Go]({{< relref "/ChapterFour/0598.Range-Addition-II.md" >}})|Easy||||50.0%|
|0628|Maximum Product of Three Numbers|[Go]({{< relref "/ChapterFour/0628.Maximum-Product-of-Three-Numbers.md" >}})|Easy| O(n)| O(1)||47.0%|
|0633|Sum of Square Numbers|[Go]({{< relref "/ChapterFour/0633.Sum-of-Square-Numbers.md" >}})|Medium||||32.4%|
|0645|Set Mismatch|[Go]({{< relref "/ChapterFour/0645.Set-Mismatch.md" >}})|Easy||||42.5%|
|0753|Cracking the Safe|[Go]({{< relref "/ChapterFour/0753.Cracking-the-Safe.md" >}})|Hard||||52.0%|
|0781|Rabbits in Forest|[Go]({{< relref "/ChapterFour/0781.Rabbits-in-Forest.md" >}})|Medium||||55.4%|
|0812|Largest Triangle Area|[Go]({{< relref "/ChapterFour/0812.Largest-Triangle-Area.md" >}})|Easy||||58.8%|
|0836|Rectangle Overlap|[Go]({{< relref "/ChapterFour/0836.Rectangle-Overlap.md" >}})|Easy||||45.1%|
|0878|Nth Magical Number|[Go]({{< relref "/ChapterFour/0878.Nth-Magical-Number.md" >}})|Hard||||28.9%|
|0885|Spiral Matrix III|[Go]({{< relref "/ChapterFour/0885.Spiral-Matrix-III.md" >}})|Medium| O(n^2)| O(1)||70.5%|
|0887|Super Egg Drop|[Go]({{< relref "/ChapterFour/0887.Super-Egg-Drop.md" >}})|Hard||||27.0%|
|0891|Sum of Subsequence Widths|[Go]({{< relref "/ChapterFour/0891.Sum-of-Subsequence-Widths.md" >}})|Hard| O(n log n)| O(1)||32.8%|
|0892|Surface Area of 3D Shapes|[Go]({{< relref "/ChapterFour/0892.Surface-Area-of-3D-Shapes.md" >}})|Easy||||59.5%|
|0910|Smallest Range II|[Go]({{< relref "/ChapterFour/0910.Smallest-Range-II.md" >}})|Medium||||31.2%|
|0914|X of a Kind in a Deck of Cards|[Go]({{< relref "/ChapterFour/0914.X-of-a-Kind-in-a-Deck-of-Cards.md" >}})|Easy||||34.4%|
|0927|Three Equal Parts|[Go]({{< relref "/ChapterFour/0927.Three-Equal-Parts.md" >}})|Hard||||34.5%|
|0942|DI String Match|[Go]({{< relref "/ChapterFour/0942.DI-String-Match.md" >}})|Easy| O(n)| O(1)||73.4%|
|0949|Largest Time for Given Digits|[Go]({{< relref "/ChapterFour/0949.Largest-Time-for-Given-Digits.md" >}})|Medium||||36.2%|
|0952|Largest Component Size by Common Factor|[Go]({{< relref "/ChapterFour/0952.Largest-Component-Size-by-Common-Factor.md" >}})|Hard||||36.1%|
|0970|Powerful Integers|[Go]({{< relref "/ChapterFour/0970.Powerful-Integers.md" >}})|Easy||||39.9%|
|0976|Largest Perimeter Triangle|[Go]({{< relref "/ChapterFour/0976.Largest-Perimeter-Triangle.md" >}})|Easy| O(n log n)| O(log n) ||58.5%|
|0996|Number of Squareful Arrays|[Go]({{< relref "/ChapterFour/0996.Number-of-Squareful-Arrays.md" >}})|Hard| O(n log n)| O(n) ||48.0%|
|1017|Convert to Base -2|[Go]({{< relref "/ChapterFour/1017.Convert-to-Base--2.md" >}})|Medium||||59.6%|
|1025|Divisor Game|[Go]({{< relref "/ChapterFour/1025.Divisor-Game.md" >}})|Easy| O(1)| O(1)||66.1%|
|1037|Valid Boomerang|[Go]({{< relref "/ChapterFour/1037.Valid-Boomerang.md" >}})|Easy||||37.9%|
|1073|Adding Two Negabinary Numbers|[Go]({{< relref "/ChapterFour/1073.Adding-Two-Negabinary-Numbers.md" >}})|Medium||||34.7%|
|1093|Statistics from a Large Sample|[Go]({{< relref "/ChapterFour/1093.Statistics-from-a-Large-Sample.md" >}})|Medium||||49.3%|
|1154|Day of the Year|[Go]({{< relref "/ChapterFour/1154.Day-of-the-Year.md" >}})|Easy||||49.3%|
|1175|Prime Arrangements|[Go]({{< relref "/ChapterFour/1175.Prime-Arrangements.md" >}})|Easy||||51.8%|
|1201|Ugly Number III|[Go]({{< relref "/ChapterFour/1201.Ugly-Number-III.md" >}})|Medium||||26.3%|
|1217|Minimum Cost to Move Chips to The Same Position|[Go]({{< relref "/ChapterFour/1217.Minimum-Cost-to-Move-Chips-to-The-Same-Position.md" >}})|Easy||||71.2%|
|1232|Check If It Is a Straight Line|[Go]({{< relref "/ChapterFour/1232.Check-If-It-Is-a-Straight-Line.md" >}})|Easy||||43.9%|
|1281|Subtract the Product and Sum of Digits of an Integer|[Go]({{< relref "/ChapterFour/1281.Subtract-the-Product-and-Sum-of-Digits-of-an-Integer.md" >}})|Easy||||85.6%|
|1317|Convert Integer to the Sum of Two No-Zero Integers|[Go]({{< relref "/ChapterFour/1317.Convert-Integer-to-the-Sum-of-Two-No-Zero-Integers.md" >}})|Easy||||56.8%|
|1512|Number of Good Pairs|[Go]({{< relref "/ChapterFour/1512.Number-of-Good-Pairs.md" >}})|Easy||||87.9%|
|1648|Sell Diminishing-Valued Colored Balls|[Go]({{< relref "/ChapterFour/1648.Sell-Diminishing-Valued-Colored-Balls.md" >}})|Medium||||30.9%|
|1680|Concatenation of Consecutive Binary Numbers|[Go]({{< relref "/ChapterFour/1680.Concatenation-of-Consecutive-Binary-Numbers.md" >}})|Medium||||45.1%|
|1685|Sum of Absolute Differences in a Sorted Array|[Go]({{< relref "/ChapterFour/1685.Sum-of-Absolute-Differences-in-a-Sorted-Array.md" >}})|Medium||||61.7%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

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@ -33,16 +33,18 @@ type: docs
[HDU 1542 Atlantis](http://acm.hdu.edu.cn/showproblem.php?pid=1542) update:区间增减 query:直接取根节点的值
[HDU 1828 Picture](http://acm.hdu.edu.cn/showproblem.php?pid=1828) update:区间增减 query:直接取根节点的值
| Title | Solution | Difficulty | Time | Space | 收藏 |
| ----- | :--------: | :----------: | :----: | :-----: |:-----: |
|218. The Skyline Problem | [Go]({{< relref "/ChapterFour/0218.The-Skyline-Problem.md" >}})| Hard | O(n log n)| O(n)|❤️|
|307. Range Sum Query - Mutable | [Go]({{< relref "/ChapterFour/0307.Range-Sum-Query---Mutable.md" >}})| Hard | O(1)| O(n)||
|315. Count of Smaller Numbers After Self | [Go]({{< relref "/ChapterFour/0315.Count-of-Smaller-Numbers-After-Self.md" >}})| Hard | O(n log n)| O(n)||
|327. Count of Range Sum | [Go]({{< relref "/ChapterFour/0327.Count-of-Range-Sum.md" >}})| Hard | O(n log n)| O(n)|❤️|
|493. Reverse Pairs | [Go]({{< relref "/ChapterFour/0493.Reverse-Pairs.md" >}})| Hard | O(n log n)| O(n)||
|699. Falling Squares | [Go]({{< relref "/ChapterFour/0699.Falling-Squares.md" >}})| Hard | O(n log n)| O(n)|❤️|
|715. Range Module | [Go]({{< relref "/ChapterFour/0715.Range-Module.md" >}})| Hard | O(log n)| O(n)|❤️|
|732. My Calendar III | [Go]({{< relref "/ChapterFour/0732.My-Calendar-III.md" >}})| Hard | O(log n)| O(n)|❤️|
|850. Rectangle Area II | [Go]({{< relref "/ChapterFour/0850.Rectangle-Area-II.md" >}})| Hard | O(n log n)| O(n)|❤️|
|1157. Online Majority Element In Subarray | [Go]({{< relref "/ChapterFour/1157.Online-Majority-Element-In-Subarray.md" >}})| Hard | O(log n)| O(n)|❤️|
|---------------------------------------|---------------------------------|--------------------------|-----------------------|-----------|--------|
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0218|The Skyline Problem|[Go]({{< relref "/ChapterFour/0218.The-Skyline-Problem.md" >}})|Hard| O(n log n)| O(n)|❤️|36.1%|
|0307|Range Sum Query - Mutable|[Go]({{< relref "/ChapterFour/0307.Range-Sum-Query---Mutable.md" >}})|Medium| O(1)| O(n)||36.5%|
|0315|Count of Smaller Numbers After Self|[Go]({{< relref "/ChapterFour/0315.Count-of-Smaller-Numbers-After-Self.md" >}})|Hard| O(n log n)| O(n)||42.6%|
|0327|Count of Range Sum|[Go]({{< relref "/ChapterFour/0327.Count-of-Range-Sum.md" >}})|Hard| O(n log n)| O(n)|❤️|35.9%|
|0493|Reverse Pairs|[Go]({{< relref "/ChapterFour/0493.Reverse-Pairs.md" >}})|Hard| O(n log n)| O(n)||26.6%|
|0699|Falling Squares|[Go]({{< relref "/ChapterFour/0699.Falling-Squares.md" >}})|Hard| O(n log n)| O(n)|❤️|42.4%|
|0715|Range Module|[Go]({{< relref "/ChapterFour/0715.Range-Module.md" >}})|Hard| O(log n)| O(n)|❤️|40.0%|
|0732|My Calendar III|[Go]({{< relref "/ChapterFour/0732.My-Calendar-III.md" >}})|Hard| O(log n)| O(n)|❤️|61.4%|
|0850|Rectangle Area II|[Go]({{< relref "/ChapterFour/0850.Rectangle-Area-II.md" >}})|Hard| O(n log n)| O(n)|❤️|48.4%|
|1157|Online Majority Element In Subarray|[Go]({{< relref "/ChapterFour/1157.Online-Majority-Element-In-Subarray.md" >}})|Hard| O(log n)| O(n)|❤️|39.5%|
|1649|Create Sorted Array through Instructions|[Go]({{< relref "/ChapterFour/1649.Create-Sorted-Array-through-Instructions.md" >}})|Hard||||36.2%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

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@ -25,19 +25,22 @@ type: docs
```
- 滑动窗口经典题。第 239 题，第 480 题。
| Title | Solution | Difficulty | Time | Space | 收藏 |
| ----- | :--------: | :----------: | :----: | :-----: |:-----: |
|3. Longest Substring Without Repeating Characters | [Go]({{< relref "/ChapterFour/0003.Longest-Substring-Without-Repeating-Characters.md" >}})| Medium | O(n)| O(1)|❤️|
|76. Minimum Window Substring | [Go]({{< relref "/ChapterFour/0076.Minimum-Window-Substring.md" >}})| Hard | O(n)| O(n)|❤️|
|239. Sliding Window Maximum | [Go]({{< relref "/ChapterFour/0239.Sliding-Window-Maximum.md" >}})| Hard | O(n * k)| O(n)|❤️|
|424. Longest Repeating Character Replacement | [Go]({{< relref "/ChapterFour/0424.Longest-Repeating-Character-Replacement.md" >}})| Medium | O(n)| O(1) ||
|480. Sliding Window Median | [Go]({{< relref "/ChapterFour/0480.Sliding-Window-Median.md" >}})| Hard | O(n * log k)| O(k)|❤️|
|567. Permutation in String | [Go]({{< relref "/ChapterFour/0567.Permutation-in-String.md" >}})| Medium | O(n)| O(1)|❤️|
|978. Longest Turbulent Subarray | [Go]({{< relref "/ChapterFour/0978.Longest-Turbulent-Subarray.md" >}})| Medium | O(n)| O(1)|❤️|
|992. Subarrays with K Different Integers | [Go]({{< relref "/ChapterFour/0992.Subarrays-with-K-Different-Integers.md" >}})| Hard | O(n)| O(n)|❤️|
|995. Minimum Number of K Consecutive Bit Flips | [Go]({{< relref "/ChapterFour/0995.Minimum-Number-of-K-Consecutive-Bit-Flips.md" >}})| Hard | O(n)| O(1)|❤️|
|1004. Max Consecutive Ones III | [Go]({{< relref "/ChapterFour/1004.Max-Consecutive-Ones-III.md" >}})| Medium | O(n)| O(1) ||
|1040. Moving Stones Until Consecutive II | [Go]({{< relref "/ChapterFour/1040.Moving-Stones-Until-Consecutive-II.md" >}})| Medium | O(n log n)| O(1) |❤️|
|1052. Grumpy Bookstore Owner | [Go]({{< relref "/ChapterFour/1052.Grumpy-Bookstore-Owner.md" >}})| Medium | O(n log n)| O(1) ||
|1074. Number of Submatrices That Sum to Target | [Go]({{< relref "/ChapterFour/1074.Number-of-Submatrices-That-Sum-to-Target.md" >}})| Hard | O(n^3)| O(n) |❤️|
|---------------------------------------|---------------------------------|--------------------------|-----------------------|-----------|--------|
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0003|Longest Substring Without Repeating Characters|[Go]({{< relref "/ChapterFour/0003.Longest-Substring-Without-Repeating-Characters.md" >}})|Medium| O(n)| O(1)|❤️|31.3%|
|0076|Minimum Window Substring|[Go]({{< relref "/ChapterFour/0076.Minimum-Window-Substring.md" >}})|Hard| O(n)| O(n)|❤️|35.7%|
|0239|Sliding Window Maximum|[Go]({{< relref "/ChapterFour/0239.Sliding-Window-Maximum.md" >}})|Hard| O(n * k)| O(n)|❤️|44.5%|
|0424|Longest Repeating Character Replacement|[Go]({{< relref "/ChapterFour/0424.Longest-Repeating-Character-Replacement.md" >}})|Medium| O(n)| O(1) ||48.0%|
|0480|Sliding Window Median|[Go]({{< relref "/ChapterFour/0480.Sliding-Window-Median.md" >}})|Hard| O(n * log k)| O(k)|❤️|38.4%|
|0567|Permutation in String|[Go]({{< relref "/ChapterFour/0567.Permutation-in-String.md" >}})|Medium| O(n)| O(1)|❤️|44.6%|
|0978|Longest Turbulent Subarray|[Go]({{< relref "/ChapterFour/0978.Longest-Turbulent-Subarray.md" >}})|Medium| O(n)| O(1)|❤️|46.6%|
|0992|Subarrays with K Different Integers|[Go]({{< relref "/ChapterFour/0992.Subarrays-with-K-Different-Integers.md" >}})|Hard| O(n)| O(n)|❤️|50.4%|
|0995|Minimum Number of K Consecutive Bit Flips|[Go]({{< relref "/ChapterFour/0995.Minimum-Number-of-K-Consecutive-Bit-Flips.md" >}})|Hard| O(n)| O(1)|❤️|49.6%|
|1004|Max Consecutive Ones III|[Go]({{< relref "/ChapterFour/1004.Max-Consecutive-Ones-III.md" >}})|Medium| O(n)| O(1) ||60.5%|
|1040|Moving Stones Until Consecutive II|[Go]({{< relref "/ChapterFour/1040.Moving-Stones-Until-Consecutive-II.md" >}})|Medium| O(n log n)| O(1) |❤️|54.0%|
|1052|Grumpy Bookstore Owner|[Go]({{< relref "/ChapterFour/1052.Grumpy-Bookstore-Owner.md" >}})|Medium| O(n log n)| O(1) ||55.6%|
|1074|Number of Submatrices That Sum to Target|[Go]({{< relref "/ChapterFour/1074.Number-of-Submatrices-That-Sum-to-Target.md" >}})|Hard| O(n^3)| O(n) |❤️|61.4%|
|1208|Get Equal Substrings Within Budget|[Go]({{< relref "/ChapterFour/1208.Get-Equal-Substrings-Within-Budget.md" >}})|Medium||||43.7%|
|1658|Minimum Operations to Reduce X to Zero|[Go]({{< relref "/ChapterFour/1658.Minimum-Operations-to-Reduce-X-to-Zero.md" >}})|Medium||||33.6%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

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@ -14,29 +14,39 @@ type: docs
- 两两不相邻的排序。第 767 题，第 1054 题。
- "饼子排序"。第 969 题。
| Title | Solution | Difficulty | Time | Space | 收藏 |
| ----- | :--------: | :----------: | :----: | :-----: |:-----: |
|56. Merge Intervals | [Go]({{< relref "/ChapterFour/0056.Merge-Intervals.md" >}})| Medium | O(n log n)| O(log n)||
|57. Insert Interval | [Go]({{< relref "/ChapterFour/0057.Insert-Interval.md" >}})| Hard | O(n)| O(1)||
|75. Sort Colors | [Go]({{< relref "/ChapterFour/0075.Sort-Colors.md" >}})| Medium| O(n)| O(1)|❤️|
|147. Insertion Sort List | [Go]({{< relref "/ChapterFour/0147.Insertion-Sort-List.md" >}})| Medium | O(n)| O(1) |❤️|
|148. Sort List | [Go]({{< relref "/ChapterFour/0148.Sort-List.md" >}})| Medium |O(n log n)| O(log n)|❤️|
|164. Maximum Gap | [Go]({{< relref "/ChapterFour/0164.Maximum-Gap.md" >}})| Hard | O(n log n)| O(log n) |❤️|
|179. Largest Number | [Go]({{< relref "/ChapterFour/0179.Largest-Number.md" >}})| Medium | O(n log n)| O(log n) |❤️|
|220. Contains Duplicate III | [Go]({{< relref "/ChapterFour/0220.Contains-Duplicate-III.md" >}})| Medium | O(n log n)| O(1) |❤️|
|242. Valid Anagram | [Go]({{< relref "/ChapterFour/0242.Valid-Anagram.md" >}})| Easy | O(n)| O(n) ||
|274. H-Index | [Go]({{< relref "/ChapterFour/0274.H-Index.md" >}})| Medium | O(n)| O(n) ||
|324. Wiggle Sort II | [Go]({{< relref "/ChapterFour/0324.Wiggle-Sort-II.md" >}})| Medium| O(n)| O(n)|❤️|
|349. Intersection of Two Arrays | [Go]({{< relref "/ChapterFour/0349.Intersection-of-Two-Arrays.md" >}})| Easy | O(n)| O(n) ||
|350. Intersection of Two Arrays II | [Go]({{< relref "/ChapterFour/0350.Intersection-of-Two-Arrays-II.md" >}})| Easy | O(n)| O(n) ||
|524. Longest Word in Dictionary through Deleting | [Go]({{< relref "/ChapterFour/0524.Longest-Word-in-Dictionary-through-Deleting.md" >}})| Medium | O(n)| O(1) ||
|767. Reorganize String | [Go]({{< relref "/ChapterFour/0767.Reorganize-String.md" >}})| Medium | O(n log n)| O(log n) |❤️|
|853. Car Fleet | [Go]({{< relref "/ChapterFour/0853.Car-Fleet.md" >}})| Medium | O(n log n)| O(log n) ||
|710. Random Pick with Blacklist | [Go]({{< relref "/ChapterFour/0710.Random-Pick-with-Blacklist.md" >}})| Hard | O(n)| O(n) ||
|922. Sort Array By Parity II | [Go]({{< relref "/ChapterFour/0922.Sort-Array-By-Parity-II.md" >}})| Easy | O(n)| O(1) ||
|969. Pancake Sorting | [Go]({{< relref "/ChapterFour/0969.Pancake-Sorting.md" >}})| Medium | O(n log n)| O(log n) |❤️|
|973. K Closest Points to Origin | [Go]({{< relref "/ChapterFour/0973.K-Closest-Points-to-Origin.md" >}})| Medium | O(n log n)| O(log n) ||
|976. Largest Perimeter Triangle | [Go]({{< relref "/ChapterFour/0976.Largest-Perimeter-Triangle.md" >}})| Easy | O(n log n)| O(log n) ||
|1030. Matrix Cells in Distance Order | [Go]({{< relref "/ChapterFour/1030.Matrix-Cells-in-Distance-Order.md" >}})| Easy | O(n^2)| O(1) ||
|1054. Distant Barcodes | [Go]({{< relref "/ChapterFour/1054.Distant-Barcodes.md" >}})| Medium | O(n log n)| O(log n) |❤️|
|---------------------------------------|---------------------------------|--------------------------|-----------------------|-----------|--------|
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0056|Merge Intervals|[Go]({{< relref "/ChapterFour/0056.Merge-Intervals.md" >}})|Medium| O(n log n)| O(log n)||40.7%|
|0057|Insert Interval|[Go]({{< relref "/ChapterFour/0057.Insert-Interval.md" >}})|Medium| O(n)| O(1)||34.8%|
|0075|Sort Colors|[Go]({{< relref "/ChapterFour/0075.Sort-Colors.md" >}})|Medium| O(n)| O(1)|❤️|48.9%|
|0147|Insertion Sort List|[Go]({{< relref "/ChapterFour/0147.Insertion-Sort-List.md" >}})|Medium| O(n)| O(1) |❤️|44.1%|
|0148|Sort List|[Go]({{< relref "/ChapterFour/0148.Sort-List.md" >}})|Medium|O(n log n)| O(log n)|❤️|45.8%|
|0164|Maximum Gap|[Go]({{< relref "/ChapterFour/0164.Maximum-Gap.md" >}})|Hard| O(n log n)| O(log n) |❤️|36.6%|
|0179|Largest Number|[Go]({{< relref "/ChapterFour/0179.Largest-Number.md" >}})|Medium| O(n log n)| O(log n) |❤️|30.4%|
|0220|Contains Duplicate III|[Go]({{< relref "/ChapterFour/0220.Contains-Duplicate-III.md" >}})|Medium| O(n log n)| O(1) |❤️|21.3%|
|0242|Valid Anagram|[Go]({{< relref "/ChapterFour/0242.Valid-Anagram.md" >}})|Easy| O(n)| O(n) ||57.9%|
|0274|H-Index|[Go]({{< relref "/ChapterFour/0274.H-Index.md" >}})|Medium| O(n)| O(n) ||36.3%|
|0315|Count of Smaller Numbers After Self|[Go]({{< relref "/ChapterFour/0315.Count-of-Smaller-Numbers-After-Self.md" >}})|Hard||||42.6%|
|0324|Wiggle Sort II|[Go]({{< relref "/ChapterFour/0324.Wiggle-Sort-II.md" >}})|Medium| O(n)| O(n)|❤️|30.5%|
|0327|Count of Range Sum|[Go]({{< relref "/ChapterFour/0327.Count-of-Range-Sum.md" >}})|Hard||||35.9%|
|0349|Intersection of Two Arrays|[Go]({{< relref "/ChapterFour/0349.Intersection-of-Two-Arrays.md" >}})|Easy| O(n)| O(n) ||64.4%|
|0350|Intersection of Two Arrays II|[Go]({{< relref "/ChapterFour/0350.Intersection-of-Two-Arrays-II.md" >}})|Easy| O(n)| O(n) ||51.9%|
|0493|Reverse Pairs|[Go]({{< relref "/ChapterFour/0493.Reverse-Pairs.md" >}})|Hard||||26.6%|
|0524|Longest Word in Dictionary through Deleting|[Go]({{< relref "/ChapterFour/0524.Longest-Word-in-Dictionary-through-Deleting.md" >}})|Medium| O(n)| O(1) ||48.9%|
|0710|Random Pick with Blacklist|[Go]({{< relref "/ChapterFour/0710.Random-Pick-with-Blacklist.md" >}})|Hard| O(n)| O(n) ||32.7%|
|0767|Reorganize String|[Go]({{< relref "/ChapterFour/0767.Reorganize-String.md" >}})|Medium| O(n log n)| O(log n) |❤️|49.9%|
|0853|Car Fleet|[Go]({{< relref "/ChapterFour/0853.Car-Fleet.md" >}})|Medium| O(n log n)| O(log n) ||43.6%|
|0922|Sort Array By Parity II|[Go]({{< relref "/ChapterFour/0922.Sort-Array-By-Parity-II.md" >}})|Easy| O(n)| O(1) ||70.2%|
|0969|Pancake Sorting|[Go]({{< relref "/ChapterFour/0969.Pancake-Sorting.md" >}})|Medium| O(n log n)| O(log n) |❤️|68.5%|
|0973|K Closest Points to Origin|[Go]({{< relref "/ChapterFour/0973.K-Closest-Points-to-Origin.md" >}})|Medium| O(n log n)| O(log n) ||64.5%|
|0976|Largest Perimeter Triangle|[Go]({{< relref "/ChapterFour/0976.Largest-Perimeter-Triangle.md" >}})|Easy| O(n log n)| O(log n) ||58.5%|
|1030|Matrix Cells in Distance Order|[Go]({{< relref "/ChapterFour/1030.Matrix-Cells-in-Distance-Order.md" >}})|Easy| O(n^2)| O(1) ||66.9%|
|1054|Distant Barcodes|[Go]({{< relref "/ChapterFour/1054.Distant-Barcodes.md" >}})|Medium| O(n log n)| O(log n) |❤️|44.2%|
|1122|Relative Sort Array|[Go]({{< relref "/ChapterFour/1122.Relative-Sort-Array.md" >}})|Easy||||67.7%|
|1235|Maximum Profit in Job Scheduling|[Go]({{< relref "/ChapterFour/1235.Maximum-Profit-in-Job-Scheduling.md" >}})|Hard||||46.9%|
|1305|All Elements in Two Binary Search Trees|[Go]({{< relref "/ChapterFour/1305.All-Elements-in-Two-Binary-Search-Trees.md" >}})|Medium||||77.8%|
|1640|Check Array Formation Through Concatenation|[Go]({{< relref "/ChapterFour/1640.Check-Array-Formation-Through-Concatenation.md" >}})|Easy||||62.3%|
|1647|Minimum Deletions to Make Character Frequencies Unique|[Go]({{< relref "/ChapterFour/1647.Minimum-Deletions-to-Make-Character-Frequencies-Unique.md" >}})|Medium||||53.9%|
|1648|Sell Diminishing-Valued Colored Balls|[Go]({{< relref "/ChapterFour/1648.Sell-Diminishing-Valued-Colored-Balls.md" >}})|Medium||||30.9%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

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@ -12,43 +12,47 @@ type: docs
- 利用栈进行编码问题。第 394 题，第 682 题，第 856 题，第 880 题。
- **单调栈**。**利用栈维护一个单调递增或者递减的下标数组**。第 84 题，第 456 题，第 496 题，第 503 题，第 739 题，第 901 题，第 907 题，第 1019 题。
| Title | Solution | Difficulty | Time | Space |收藏|
| ----- | :--------: | :----------: | :----: | :-----: | :-----: |
|20. Valid Parentheses | [Go]({{< relref "/ChapterFour/0020.Valid-Parentheses.md" >}})| Easy | O(log n)| O(1)||
|42. Trapping Rain Water | [Go]({{< relref "/ChapterFour/0042.Trapping-Rain-Water.md" >}})| Hard | O(n)| O(1)|❤️|
|71. Simplify Path | [Go]({{< relref "/ChapterFour/0071.Simplify-Path.md" >}})| Medium | O(n)| O(n)|❤️|
|84. Largest Rectangle in Histogram | [Go]({{< relref "/ChapterFour/0084.Largest-Rectangle-in-Histogram.md" >}})| Medium | O(n)| O(n)|❤️|
|94. Binary Tree Inorder Traversal | [Go]({{< relref "/ChapterFour/0094.Binary-Tree-Inorder-Traversal.md" >}})| Medium | O(n)| O(1)||
|103. Binary Tree Zigzag Level Order Traversal | [Go]({{< relref "/ChapterFour/0103.Binary-Tree-Zigzag-Level-Order-Traversal.md" >}})| Medium | O(n)| O(n)||
|144. Binary Tree Preorder Traversal | [Go]({{< relref "/ChapterFour/0144.Binary-Tree-Preorder-Traversal.md" >}})| Medium | O(n)| O(1)||
|145. Binary Tree Postorder Traversal | [Go]({{< relref "/ChapterFour/0145.Binary-Tree-Postorder-Traversal.md" >}})| Hard | O(n)| O(1)||
|150. Evaluate Reverse Polish Notation | [Go]({{< relref "/ChapterFour/0150.Evaluate-Reverse-Polish-Notation.md" >}})| Medium | O(n)| O(1)||
|155. Min Stack | [Go]({{< relref "/ChapterFour/0155.Min-Stack.md" >}})| Easy | O(n)| O(n)||
|173. Binary Search Tree Iterator | [Go]({{< relref "/ChapterFour/0173.Binary-Search-Tree-Iterator.md" >}})| Medium | O(n)| O(1)||
|224. Basic Calculator | [Go]({{< relref "/ChapterFour/0224.Basic-Calculator.md" >}})| Hard | O(n)| O(n)||
|225. Implement Stack using Queues | [Go]({{< relref "/ChapterFour/0225.Implement-Stack-using-Queues.md" >}})| Easy | O(n)| O(n)||
|232. Implement Queue using Stacks | [Go]({{< relref "/ChapterFour/0232.Implement-Queue-using-Stacks.md" >}})| Easy | O(n)| O(n)||
|331. Verify Preorder Serialization of a Binary Tree | [Go]({{< relref "/ChapterFour/0331.Verify-Preorder-Serialization-of-a-Binary-Tree.md" >}})| Medium | O(n)| O(1)||
|394. Decode String | [Go]({{< relref "/ChapterFour/0394.Decode-String.md" >}})| Medium | O(n)| O(n)||
|402. Remove K Digits | [Go]({{< relref "/ChapterFour/0402.Remove-K-Digits.md" >}})| Medium | O(n)| O(1)||
|456. 132 Pattern | [Go]({{< relref "/ChapterFour/0456.132-Pattern.md" >}})| Medium | O(n)| O(n)||
|496. Next Greater Element I | [Go]({{< relref "/ChapterFour/0496.Next-Greater-Element-I.md" >}})| Easy | O(n)| O(n)||
|503. Next Greater Element II | [Go]({{< relref "/ChapterFour/0503.Next-Greater-Element-II.md" >}})| Medium | O(n)| O(n)||
|636. Exclusive Time of Functions | [Go]({{< relref "/ChapterFour/0636.Exclusive-Time-of-Functions.md" >}})| Medium | O(n)| O(n)||
|682. Baseball Game | [Go]({{< relref "/ChapterFour/0682.Baseball-Game.md" >}})| Easy | O(n)| O(n)||
|726. Number of Atoms | [Go]({{< relref "/ChapterFour/0726.Number-of-Atoms.md" >}})| Hard | O(n)| O(n) |❤️|
|735. Asteroid Collision | [Go]({{< relref "/ChapterFour/0735.Asteroid-Collision.md" >}})| Medium | O(n)| O(n) ||
|739. Daily Temperatures | [Go]({{< relref "/ChapterFour/0739.Daily-Temperatures.md" >}})| Medium | O(n)| O(n) ||
|844. Backspace String Compare | [Go]({{< relref "/ChapterFour/0844.Backspace-String-Compare.md" >}})| Easy | O(n)| O(n) ||
|856. Score of Parentheses | [Go]({{< relref "/ChapterFour/0856.Score-of-Parentheses.md" >}})| Medium | O(n)| O(n)||
|880. Decoded String at Index | [Go]({{< relref "/ChapterFour/0880.Decoded-String-at-Index.md" >}})| Medium | O(n)| O(n)||
|895. Maximum Frequency Stack | [Go]({{< relref "/ChapterFour/0895.Maximum-Frequency-Stack.md" >}})| Hard | O(n)| O(n) ||
|901. Online Stock Span | [Go]({{< relref "/ChapterFour/0901.Online-Stock-Span.md" >}})| Medium | O(n)| O(n) ||
|907. Sum of Subarray Minimums | [Go]({{< relref "/ChapterFour/0907.Sum-of-Subarray-Minimums.md" >}})| Medium | O(n)| O(n)|❤️|
|921. Minimum Add to Make Parentheses Valid | [Go]({{< relref "/ChapterFour/0921.Minimum-Add-to-Make-Parentheses-Valid.md" >}})| Medium | O(n)| O(n)||
|946. Validate Stack Sequences | [Go]({{< relref "/ChapterFour/0946.Validate-Stack-Sequences.md" >}})| Medium | O(n)| O(n)||
|1003. Check If Word Is Valid After Substitutions | [Go]({{< relref "/ChapterFour/1003.Check-If-Word-Is-Valid-After-Substitutions.md" >}})| Medium | O(n)| O(1)||
|1019. Next Greater Node In Linked List | [Go]({{< relref "/ChapterFour/1019.Next-Greater-Node-In-Linked-List.md" >}})| Medium | O(n)| O(1)||
|1021. Remove Outermost Parentheses | [Go]({{< relref "/ChapterFour/1021.Remove-Outermost-Parentheses.md" >}})| Medium | O(n)| O(1)||
|1047. Remove All Adjacent Duplicates In String | [Go]({{< relref "/ChapterFour/1047.Remove-All-Adjacent-Duplicates-In-String.md" >}})| Medium | O(n)| O(1)||
|---------------------------------------|-----------------------------|--------------------------|-----------------------|-----------|--------|
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0020|Valid Parentheses|[Go]({{< relref "/ChapterFour/0020.Valid-Parentheses.md" >}})|Easy| O(log n)| O(1)||39.5%|
|0042|Trapping Rain Water|[Go]({{< relref "/ChapterFour/0042.Trapping-Rain-Water.md" >}})|Hard| O(n)| O(1)|❤️|50.7%|
|0071|Simplify Path|[Go]({{< relref "/ChapterFour/0071.Simplify-Path.md" >}})|Medium| O(n)| O(n)|❤️|33.6%|
|0084|Largest Rectangle in Histogram|[Go]({{< relref "/ChapterFour/0084.Largest-Rectangle-in-Histogram.md" >}})|Hard| O(n)| O(n)|❤️|36.8%|
|0094|Binary Tree Inorder Traversal|[Go]({{< relref "/ChapterFour/0094.Binary-Tree-Inorder-Traversal.md" >}})|Medium| O(n)| O(1)||65.4%|
|0103|Binary Tree Zigzag Level Order Traversal|[Go]({{< relref "/ChapterFour/0103.Binary-Tree-Zigzag-Level-Order-Traversal.md" >}})|Medium| O(n)| O(n)||49.8%|
|0144|Binary Tree Preorder Traversal|[Go]({{< relref "/ChapterFour/0144.Binary-Tree-Preorder-Traversal.md" >}})|Medium| O(n)| O(1)||57.1%|
|0145|Binary Tree Postorder Traversal|[Go]({{< relref "/ChapterFour/0145.Binary-Tree-Postorder-Traversal.md" >}})|Medium| O(n)| O(1)||57.1%|
|0150|Evaluate Reverse Polish Notation|[Go]({{< relref "/ChapterFour/0150.Evaluate-Reverse-Polish-Notation.md" >}})|Medium| O(n)| O(1)||37.6%|
|0155|Min Stack|[Go]({{< relref "/ChapterFour/0155.Min-Stack.md" >}})|Easy| O(n)| O(n)||46.0%|
|0173|Binary Search Tree Iterator|[Go]({{< relref "/ChapterFour/0173.Binary-Search-Tree-Iterator.md" >}})|Medium| O(n)| O(1)||59.6%|
|0224|Basic Calculator|[Go]({{< relref "/ChapterFour/0224.Basic-Calculator.md" >}})|Hard| O(n)| O(n)||38.0%|
|0225|Implement Stack using Queues|[Go]({{< relref "/ChapterFour/0225.Implement-Stack-using-Queues.md" >}})|Easy| O(n)| O(n)||46.9%|
|0232|Implement Queue using Stacks|[Go]({{< relref "/ChapterFour/0232.Implement-Queue-using-Stacks.md" >}})|Easy| O(n)| O(n)||51.6%|
|0331|Verify Preorder Serialization of a Binary Tree|[Go]({{< relref "/ChapterFour/0331.Verify-Preorder-Serialization-of-a-Binary-Tree.md" >}})|Medium| O(n)| O(1)||40.9%|
|0385|Mini Parser|[Go]({{< relref "/ChapterFour/0385.Mini-Parser.md" >}})|Medium||||34.3%|
|0394|Decode String|[Go]({{< relref "/ChapterFour/0394.Decode-String.md" >}})|Medium| O(n)| O(n)||52.3%|
|0402|Remove K Digits|[Go]({{< relref "/ChapterFour/0402.Remove-K-Digits.md" >}})|Medium| O(n)| O(1)||28.6%|
|0456|132 Pattern|[Go]({{< relref "/ChapterFour/0456.132-Pattern.md" >}})|Medium| O(n)| O(n)||30.6%|
|0496|Next Greater Element I|[Go]({{< relref "/ChapterFour/0496.Next-Greater-Element-I.md" >}})|Easy| O(n)| O(n)||65.1%|
|0503|Next Greater Element II|[Go]({{< relref "/ChapterFour/0503.Next-Greater-Element-II.md" >}})|Medium| O(n)| O(n)||58.1%|
|0636|Exclusive Time of Functions|[Go]({{< relref "/ChapterFour/0636.Exclusive-Time-of-Functions.md" >}})|Medium| O(n)| O(n)||53.9%|
|0682|Baseball Game|[Go]({{< relref "/ChapterFour/0682.Baseball-Game.md" >}})|Easy| O(n)| O(n)||66.1%|
|0726|Number of Atoms|[Go]({{< relref "/ChapterFour/0726.Number-of-Atoms.md" >}})|Hard| O(n)| O(n) |❤️|51.0%|
|0735|Asteroid Collision|[Go]({{< relref "/ChapterFour/0735.Asteroid-Collision.md" >}})|Medium| O(n)| O(n) ||43.2%|
|0739|Daily Temperatures|[Go]({{< relref "/ChapterFour/0739.Daily-Temperatures.md" >}})|Medium| O(n)| O(n) ||64.3%|
|0844|Backspace String Compare|[Go]({{< relref "/ChapterFour/0844.Backspace-String-Compare.md" >}})|Easy| O(n)| O(n) ||46.8%|
|0856|Score of Parentheses|[Go]({{< relref "/ChapterFour/0856.Score-of-Parentheses.md" >}})|Medium| O(n)| O(n)||62.2%|
|0880|Decoded String at Index|[Go]({{< relref "/ChapterFour/0880.Decoded-String-at-Index.md" >}})|Medium| O(n)| O(n)||28.3%|
|0895|Maximum Frequency Stack|[Go]({{< relref "/ChapterFour/0895.Maximum-Frequency-Stack.md" >}})|Hard| O(n)| O(n) ||62.1%|
|0901|Online Stock Span|[Go]({{< relref "/ChapterFour/0901.Online-Stock-Span.md" >}})|Medium| O(n)| O(n) ||61.1%|
|0907|Sum of Subarray Minimums|[Go]({{< relref "/ChapterFour/0907.Sum-of-Subarray-Minimums.md" >}})|Medium| O(n)| O(n)|❤️|33.2%|
|0921|Minimum Add to Make Parentheses Valid|[Go]({{< relref "/ChapterFour/0921.Minimum-Add-to-Make-Parentheses-Valid.md" >}})|Medium| O(n)| O(n)||74.6%|
|0946|Validate Stack Sequences|[Go]({{< relref "/ChapterFour/0946.Validate-Stack-Sequences.md" >}})|Medium| O(n)| O(n)||63.4%|
|1003|Check If Word Is Valid After Substitutions|[Go]({{< relref "/ChapterFour/1003.Check-If-Word-Is-Valid-After-Substitutions.md" >}})|Medium| O(n)| O(1)||56.1%|
|1019|Next Greater Node In Linked List|[Go]({{< relref "/ChapterFour/1019.Next-Greater-Node-In-Linked-List.md" >}})|Medium| O(n)| O(1)||58.2%|
|1021|Remove Outermost Parentheses|[Go]({{< relref "/ChapterFour/1021.Remove-Outermost-Parentheses.md" >}})|Easy| O(n)| O(1)||78.7%|
|1047|Remove All Adjacent Duplicates In String|[Go]({{< relref "/ChapterFour/1047.Remove-All-Adjacent-Duplicates-In-String.md" >}})|Easy| O(n)| O(1)||70.2%|
|1673|Find the Most Competitive Subsequence|[Go]({{< relref "/ChapterFour/1673.Find-the-Most-Competitive-Subsequence.md" >}})|Medium||||38.3%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

70
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@ -5,26 +5,50 @@ type: docs
# String
| Title | Solution | Difficulty | Time | Space |收藏|
| ----- | :--------: | :----------: | :----: | :-----: | :-----: |
|3. Longest Substring Without Repeating Characters | [Go]({{< relref "/ChapterFour/0003.Longest-Substring-Without-Repeating-Characters.md" >}})| Medium | O(n)| O(1)|❤️|
|17. Letter Combinations of a Phone Number | [Go]({{< relref "/ChapterFour/0017.Letter-Combinations-of-a-Phone-Number.md" >}})| Medium | O(log n)| O(1)||
|20. Valid Parentheses | [Go]({{< relref "/ChapterFour/0020.Valid-Parentheses.md" >}})| Easy | O(log n)| O(1)||
|22. Generate Parentheses | [Go]({{< relref "/ChapterFour/0022.Generate-Parentheses.md" >}})| Medium | O(log n)| O(1)||
|28. Implement strStr() | [Go]({{< relref "/ChapterFour/0028.Implement-strStr.md" >}})| Easy | O(n)| O(1)||
|30. Substring with Concatenation of All Words | [Go]({{< relref "/ChapterFour/0030.Substring-with-Concatenation-of-All-Words.md" >}})| Hard | O(n)| O(n)|❤️|
|49. Group Anagrams | [Go]({{< relref "/ChapterFour/0049.Group-Anagrams.md" >}})| Medium | O(n log n)| O(n)||
|71. Simplify Path | [Go]({{< relref "/ChapterFour/0071.Simplify-Path.md" >}})| Medium | O(n)| O(n)||
|76. Minimum Window Substring | [Go]({{< relref "/ChapterFour/0076.Minimum-Window-Substring.md" >}})| Hard | O(n)| O(n)|❤️|
|91. Decode Ways | [Go]({{< relref "/ChapterFour/0091.Decode-Ways.md" >}})| Medium | O(n)| O(n)||
|93. Restore IP Addresses | [Go]({{< relref "/ChapterFour/0093.Restore-IP-Addresses.md" >}})| Medium | O(n)| O(n)|❤️|
|125. Valid Palindrome | [Go]({{< relref "/ChapterFour/0125.Valid-Palindrome.md" >}})| Easy | O(n)| O(1)||
|126. Word Ladder II | [Go]({{< relref "/ChapterFour/0126.Word-Ladder-II.md" >}})| Hard | O(n)| O(n^2)|❤️|
|344. Reverse String | [Go]({{< relref "/ChapterFour/0344.Reverse-String.md" >}})| Easy | O(n)| O(1)||
|345. Reverse Vowels of a String | [Go]({{< relref "/ChapterFour/0345.Reverse-Vowels-of-a-String.md" >}})| Easy | O(n)| O(1)||
|767. Reorganize String | [Go]({{< relref "/ChapterFour/0767.Reorganize-String.md" >}})| Medium | O(n log n)| O(log n) |❤️|
|842. Split Array into Fibonacci Sequence | [Go]({{< relref "/ChapterFour/0842.Split-Array-into-Fibonacci-Sequence.md" >}})| Medium | O(n^2)| O(1)|❤️|
|856. Score of Parentheses | [Go]({{< relref "/ChapterFour/0856.Score-of-Parentheses.md" >}})| Medium | O(n)| O(n)||
|925. Long Pressed Name | [Go]({{< relref "/ChapterFour/0925.Long-Pressed-Name.md" >}})| Easy | O(n)| O(1)||
|1003. Check If Word Is Valid After Substitutions | [Go]({{< relref "/ChapterFour/1003.Check-If-Word-Is-Valid-After-Substitutions.md" >}})| Medium | O(n)| O(1)||
|---------------------------------------|---------------------------------|--------------------------|-----------------------|-----------|--------|
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0003|Longest Substring Without Repeating Characters|[Go]({{< relref "/ChapterFour/0003.Longest-Substring-Without-Repeating-Characters.md" >}})|Medium| O(n)| O(1)|❤️|31.3%|
|0013|Roman to Integer|[Go]({{< relref "/ChapterFour/0013.Roman-to-Integer.md" >}})|Easy||||56.4%|
|0017|Letter Combinations of a Phone Number|[Go]({{< relref "/ChapterFour/0017.Letter-Combinations-of-a-Phone-Number.md" >}})|Medium| O(log n)| O(1)||48.6%|
|0020|Valid Parentheses|[Go]({{< relref "/ChapterFour/0020.Valid-Parentheses.md" >}})|Easy| O(log n)| O(1)||39.5%|
|0022|Generate Parentheses|[Go]({{< relref "/ChapterFour/0022.Generate-Parentheses.md" >}})|Medium| O(log n)| O(1)||64.8%|
|0028|Implement strStr()|[Go]({{< relref "/ChapterFour/0028.Implement-strStr.md" >}})|Easy| O(n)| O(1)||35.0%|
|0030|Substring with Concatenation of All Words|[Go]({{< relref "/ChapterFour/0030.Substring-with-Concatenation-of-All-Words.md" >}})|Hard| O(n)| O(n)|❤️|26.0%|
|0049|Group Anagrams|[Go]({{< relref "/ChapterFour/0049.Group-Anagrams.md" >}})|Medium| O(n log n)| O(n)||58.8%|
|0067|Add Binary|[Go]({{< relref "/ChapterFour/0067.Add-Binary.md" >}})|Easy||||46.6%|
|0071|Simplify Path|[Go]({{< relref "/ChapterFour/0071.Simplify-Path.md" >}})|Medium| O(n)| O(n)||33.6%|
|0076|Minimum Window Substring|[Go]({{< relref "/ChapterFour/0076.Minimum-Window-Substring.md" >}})|Hard| O(n)| O(n)|❤️|35.7%|
|0091|Decode Ways|[Go]({{< relref "/ChapterFour/0091.Decode-Ways.md" >}})|Medium| O(n)| O(n)||26.2%|
|0093|Restore IP Addresses|[Go]({{< relref "/ChapterFour/0093.Restore-IP-Addresses.md" >}})|Medium| O(n)| O(n)|❤️|37.2%|
|0125|Valid Palindrome|[Go]({{< relref "/ChapterFour/0125.Valid-Palindrome.md" >}})|Easy| O(n)| O(1)||37.9%|
|0126|Word Ladder II|[Go]({{< relref "/ChapterFour/0126.Word-Ladder-II.md" >}})|Hard| O(n)| O(n^2)|❤️|23.4%|
|0151|Reverse Words in a String|[Go]({{< relref "/ChapterFour/0151.Reverse-Words-in-a-String.md" >}})|Medium||||23.3%|
|0344|Reverse String|[Go]({{< relref "/ChapterFour/0344.Reverse-String.md" >}})|Easy| O(n)| O(1)||70.0%|
|0345|Reverse Vowels of a String|[Go]({{< relref "/ChapterFour/0345.Reverse-Vowels-of-a-String.md" >}})|Easy| O(n)| O(1)||44.9%|
|0385|Mini Parser|[Go]({{< relref "/ChapterFour/0385.Mini-Parser.md" >}})|Medium||||34.3%|
|0387|First Unique Character in a String|[Go]({{< relref "/ChapterFour/0387.First-Unique-Character-in-a-String.md" >}})|Easy||||53.7%|
|0537|Complex Number Multiplication|[Go]({{< relref "/ChapterFour/0537.Complex-Number-Multiplication.md" >}})|Medium||||68.3%|
|0541|Reverse String II|[Go]({{< relref "/ChapterFour/0541.Reverse-String-II.md" >}})|Easy||||49.0%|
|0557|Reverse Words in a String III|[Go]({{< relref "/ChapterFour/0557.Reverse-Words-in-a-String-III.md" >}})|Easy||||71.5%|
|0632|Smallest Range Covering Elements from K Lists|[Go]({{< relref "/ChapterFour/0632.Smallest-Range-Covering-Elements-from-K-Lists.md" >}})|Hard||||53.9%|
|0767|Reorganize String|[Go]({{< relref "/ChapterFour/0767.Reorganize-String.md" >}})|Medium| O(n log n)| O(log n) |❤️|49.9%|
|0819|Most Common Word|[Go]({{< relref "/ChapterFour/0819.Most-Common-Word.md" >}})|Easy||||45.4%|
|0842|Split Array into Fibonacci Sequence|[Go]({{< relref "/ChapterFour/0842.Split-Array-into-Fibonacci-Sequence.md" >}})|Medium| O(n^2)| O(1)|❤️|36.7%|
|0856|Score of Parentheses|[Go]({{< relref "/ChapterFour/0856.Score-of-Parentheses.md" >}})|Medium| O(n)| O(n)||62.2%|
|0925|Long Pressed Name|[Go]({{< relref "/ChapterFour/0925.Long-Pressed-Name.md" >}})|Easy| O(n)| O(1)||38.4%|
|1003|Check If Word Is Valid After Substitutions|[Go]({{< relref "/ChapterFour/1003.Check-If-Word-Is-Valid-After-Substitutions.md" >}})|Medium| O(n)| O(1)||56.1%|
|1108|Defanging an IP Address|[Go]({{< relref "/ChapterFour/1108.Defanging-an-IP-Address.md" >}})|Easy||||88.5%|
|1170|Compare Strings by Frequency of the Smallest Character|[Go]({{< relref "/ChapterFour/1170.Compare-Strings-by-Frequency-of-the-Smallest-Character.md" >}})|Easy||||59.5%|
|1189|Maximum Number of Balloons|[Go]({{< relref "/ChapterFour/1189.Maximum-Number-of-Balloons.md" >}})|Easy||||61.8%|
|1221|Split a String in Balanced Strings|[Go]({{< relref "/ChapterFour/1221.Split-a-String-in-Balanced-Strings.md" >}})|Easy||||84.0%|
|1234|Replace the Substring for Balanced String|[Go]({{< relref "/ChapterFour/1234.Replace-the-Substring-for-Balanced-String.md" >}})|Medium||||34.4%|
|1455|Check If a Word Occurs As a Prefix of Any Word in a Sentence|[Go]({{< relref "/ChapterFour/1455.Check-If-a-Word-Occurs-As-a-Prefix-of-Any-Word-in-a-Sentence.md" >}})|Easy||||64.7%|
|1573|Number of Ways to Split a String|[Go]({{< relref "/ChapterFour/1573.Number-of-Ways-to-Split-a-String.md" >}})|Medium||||30.8%|
|1653|Minimum Deletions to Make String Balanced|[Go]({{< relref "/ChapterFour/1653.Minimum-Deletions-to-Make-String-Balanced.md" >}})|Medium||||49.7%|
|1662|Check If Two String Arrays are Equivalent|[Go]({{< relref "/ChapterFour/1662.Check-If-Two-String-Arrays-are-Equivalent.md" >}})|Easy||||83.7%|
|1668|Maximum Repeating Substring|[Go]({{< relref "/ChapterFour/1668.Maximum-Repeating-Substring.md" >}})|Easy||||38.7%|
|1678|Goal Parser Interpretation|[Go]({{< relref "/ChapterFour/1678.Goal-Parser-Interpretation.md" >}})|Easy||||86.7%|
|1684|Count the Number of Consistent Strings|[Go]({{< relref "/ChapterFour/1684.Count-the-Number-of-Consistent-Strings.md" >}})|Easy||||84.2%|
|1694|Reformat Phone Number|[Go]({{< relref "/ChapterFour/1694.Reformat-Phone-Number.md" >}})|Easy||||67.1%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

98
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@ -5,39 +5,65 @@ type: docs
# Tree
| Title | Solution | Difficulty | Time | Space |收藏|
| ----- | :--------: | :----------: | :----: | :-----: | :-----: |
|94. Binary Tree Inorder Traversal | [Go]({{< relref "/ChapterFour/0094.Binary-Tree-Inorder-Traversal.md" >}})| Medium | O(n)| O(1)||
|96. Unique Binary Search Trees | [Go]({{< relref "/ChapterFour/0096.Unique-Binary-Search-Trees.md" >}})| Medium | O(n^2)| O(n)||
|98. Validate Binary Search Tree | [Go]({{< relref "/ChapterFour/0098.Validate-Binary-Search-Tree.md" >}})| Medium | O(n)| O(1)||
|99. Recover Binary Search Tree | [Go]({{< relref "/ChapterFour/0099.Recover-Binary-Search-Tree.md" >}})| Hard | O(n)| O(1)||
|100. Same Tree | [Go]({{< relref "/ChapterFour/0100.Same-Tree.md" >}})| Easy | O(n)| O(1)||
|101. Symmetric Tree | [Go]({{< relref "/ChapterFour/0101.Symmetric-Tree.md" >}})| Easy | O(n)| O(1)||
|102. Binary Tree Level Order Traversal | [Go]({{< relref "/ChapterFour/0102.Binary-Tree-Level-Order-Traversal.md" >}})| Medium | O(n)| O(1)||
|103. Binary Tree Zigzag Level Order Traversal | [Go]({{< relref "/ChapterFour/0103.Binary-Tree-Zigzag-Level-Order-Traversal.md" >}})| Medium | O(n)| O(n)||
|104. Maximum Depth of Binary Tree | [Go]({{< relref "/ChapterFour/0104.Maximum-Depth-of-Binary-Tree.md" >}})| Easy | O(n)| O(1)||
|107. Binary Tree Level Order Traversal II | [Go]({{< relref "/ChapterFour/0107.Binary-Tree-Level-Order-Traversal-II.md" >}})| Easy | O(n)| O(1)||
|108. Convert Sorted Array to Binary Search Tree | [Go]({{< relref "/ChapterFour/0108.Convert-Sorted-Array-to-Binary-Search-Tree.md" >}})| Easy | O(n)| O(1)||
|110. Balanced Binary Tree | [Go]({{< relref "/ChapterFour/0110.Balanced-Binary-Tree.md" >}})| Easy | O(n)| O(1)||
|111. Minimum Depth of Binary Tree | [Go]({{< relref "/ChapterFour/0111.Minimum-Depth-of-Binary-Tree.md" >}})| Easy | O(n)| O(1)||
|112. Path Sum | [Go]({{< relref "/ChapterFour/0112.Path-Sum.md" >}})| Easy | O(n)| O(1)||
|113. Path Sum II | [Go]({{< relref "/ChapterFour/0113.Path-Sum-II.md" >}})| Medium | O(n)| O(1)||
|114. Flatten Binary Tree to Linked List | [Go]({{< relref "/ChapterFour/0114.Flatten-Binary-Tree-to-Linked-List.md" >}})| Medium | O(n)| O(1)||
|124. Binary Tree Maximum Path Sum | [Go]({{< relref "/ChapterFour/0124.Binary-Tree-Maximum-Path-Sum.md" >}})| Hard | O(n)| O(1)||
|129. Sum Root to Leaf Numbers | [Go]({{< relref "/ChapterFour/0129.Sum-Root-to-Leaf-Numbers.md" >}})| Medium | O(n)| O(1)||
|144. Binary Tree Preorder Traversal | [Go]({{< relref "/ChapterFour/0144.Binary-Tree-Preorder-Traversal.md" >}})| Medium | O(n)| O(1)||
|145. Binary Tree Postorder Traversal | [Go]({{< relref "/ChapterFour/0145.Binary-Tree-Postorder-Traversal.md" >}})| Hard | O(n)| O(1)||
|173. Binary Search Tree Iterator | [Go]({{< relref "/ChapterFour/0173.Binary-Search-Tree-Iterator.md" >}})| Medium | O(n)| O(1)||
|199. Binary Tree Right Side View | [Go]({{< relref "/ChapterFour/0199.Binary-Tree-Right-Side-View.md" >}})| Medium | O(n)| O(1)||
|222. Count Complete Tree Nodes | [Go]({{< relref "/ChapterFour/0222.Count-Complete-Tree-Nodes.md" >}})| Medium | O(n)| O(1)||
|226. Invert Binary Tree | [Go]({{< relref "/ChapterFour/0226.Invert-Binary-Tree.md" >}})| Easy | O(n)| O(1)||
|230. Kth Smallest Element in a BST | [Go]({{< relref "/ChapterFour/0230.Kth-Smallest-Element-in-a-BST.md" >}})| Medium | O(n)| O(1)||
|235. Lowest Common Ancestor of a Binary Search Tree | [Go]({{< relref "/ChapterFour/0235.Lowest-Common-Ancestor-of-a-Binary-Search-Tree.md" >}})| Easy | O(n)| O(1)||
|236. Lowest Common Ancestor of a Binary Tree | [Go]({{< relref "/ChapterFour/0236.Lowest-Common-Ancestor-of-a-Binary-Tree.md" >}})| Medium | O(n)| O(1)||
|257. Binary Tree Paths | [Go]({{< relref "/ChapterFour/0257.Binary-Tree-Paths.md" >}})| Easy | O(n)| O(1)||
|404. Sum of Left Leaves | [Go]({{< relref "/ChapterFour/0404.Sum-of-Left-Leaves.md" >}})| Easy | O(n)| O(1)||
|437. Path Sum III | [Go]({{< relref "/ChapterFour/0437.Path-Sum-III.md" >}})| Easy | O(n)| O(1)||
|515. Find Largest Value in Each Tree Row | [Go]({{< relref "/ChapterFour/0515.Find-Largest-Value-in-Each-Tree-Row.md" >}})| Medium | O(n)| O(n)||
|637. Average of Levels in Binary Tree | [Go]({{< relref "/ChapterFour/0637.Average-of-Levels-in-Binary-Tree.md" >}})| Easy | O(n)| O(n)||
|993. Cousins in Binary Tree | [Go]({{< relref "/ChapterFour/0993.Cousins-in-Binary-Tree.md" >}})| Easy | O(n)| O(1)||
|---------------------------------------|---------------------------------|--------------------------|-----------------------|-----------|--------|
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0094|Binary Tree Inorder Traversal|[Go]({{< relref "/ChapterFour/0094.Binary-Tree-Inorder-Traversal.md" >}})|Medium| O(n)| O(1)||65.4%|
|0095|Unique Binary Search Trees II|[Go]({{< relref "/ChapterFour/0095.Unique-Binary-Search-Trees-II.md" >}})|Medium||||42.1%|
|0096|Unique Binary Search Trees|[Go]({{< relref "/ChapterFour/0096.Unique-Binary-Search-Trees.md" >}})|Medium| O(n^2)| O(n)||54.1%|
|0098|Validate Binary Search Tree|[Go]({{< relref "/ChapterFour/0098.Validate-Binary-Search-Tree.md" >}})|Medium| O(n)| O(1)||28.6%|
|0099|Recover Binary Search Tree|[Go]({{< relref "/ChapterFour/0099.Recover-Binary-Search-Tree.md" >}})|Hard| O(n)| O(1)||42.1%|
|0100|Same Tree|[Go]({{< relref "/ChapterFour/0100.Same-Tree.md" >}})|Easy| O(n)| O(1)||54.0%|
|0101|Symmetric Tree|[Go]({{< relref "/ChapterFour/0101.Symmetric-Tree.md" >}})|Easy| O(n)| O(1)||47.9%|
|0102|Binary Tree Level Order Traversal|[Go]({{< relref "/ChapterFour/0102.Binary-Tree-Level-Order-Traversal.md" >}})|Medium| O(n)| O(1)||56.2%|
|0103|Binary Tree Zigzag Level Order Traversal|[Go]({{< relref "/ChapterFour/0103.Binary-Tree-Zigzag-Level-Order-Traversal.md" >}})|Medium| O(n)| O(n)||49.8%|
|0104|Maximum Depth of Binary Tree|[Go]({{< relref "/ChapterFour/0104.Maximum-Depth-of-Binary-Tree.md" >}})|Easy| O(n)| O(1)||67.7%|
|0105|Construct Binary Tree from Preorder and Inorder Traversal|[Go]({{< relref "/ChapterFour/0105.Construct-Binary-Tree-from-Preorder-and-Inorder-Traversal.md" >}})|Medium||||51.2%|
|0106|Construct Binary Tree from Inorder and Postorder Traversal|[Go]({{< relref "/ChapterFour/0106.Construct-Binary-Tree-from-Inorder-and-Postorder-Traversal.md" >}})|Medium||||49.1%|
|0107|Binary Tree Level Order Traversal II|[Go]({{< relref "/ChapterFour/0107.Binary-Tree-Level-Order-Traversal-II.md" >}})|Easy| O(n)| O(1)||54.8%|
|0108|Convert Sorted Array to Binary Search Tree|[Go]({{< relref "/ChapterFour/0108.Convert-Sorted-Array-to-Binary-Search-Tree.md" >}})|Easy| O(n)| O(1)||59.9%|
|0110|Balanced Binary Tree|[Go]({{< relref "/ChapterFour/0110.Balanced-Binary-Tree.md" >}})|Easy| O(n)| O(1)||44.6%|
|0111|Minimum Depth of Binary Tree|[Go]({{< relref "/ChapterFour/0111.Minimum-Depth-of-Binary-Tree.md" >}})|Easy| O(n)| O(1)||39.2%|
|0112|Path Sum|[Go]({{< relref "/ChapterFour/0112.Path-Sum.md" >}})|Easy| O(n)| O(1)||42.1%|
|0113|Path Sum II|[Go]({{< relref "/ChapterFour/0113.Path-Sum-II.md" >}})|Medium| O(n)| O(1)||48.6%|
|0114|Flatten Binary Tree to Linked List|[Go]({{< relref "/ChapterFour/0114.Flatten-Binary-Tree-to-Linked-List.md" >}})|Medium| O(n)| O(1)||51.4%|
|0124|Binary Tree Maximum Path Sum|[Go]({{< relref "/ChapterFour/0124.Binary-Tree-Maximum-Path-Sum.md" >}})|Hard| O(n)| O(1)||35.2%|
|0129|Sum Root to Leaf Numbers|[Go]({{< relref "/ChapterFour/0129.Sum-Root-to-Leaf-Numbers.md" >}})|Medium| O(n)| O(1)||50.6%|
|0144|Binary Tree Preorder Traversal|[Go]({{< relref "/ChapterFour/0144.Binary-Tree-Preorder-Traversal.md" >}})|Medium| O(n)| O(1)||57.1%|
|0145|Binary Tree Postorder Traversal|[Go]({{< relref "/ChapterFour/0145.Binary-Tree-Postorder-Traversal.md" >}})|Medium| O(n)| O(1)||57.1%|
|0173|Binary Search Tree Iterator|[Go]({{< relref "/ChapterFour/0173.Binary-Search-Tree-Iterator.md" >}})|Medium| O(n)| O(1)||59.6%|
|0199|Binary Tree Right Side View|[Go]({{< relref "/ChapterFour/0199.Binary-Tree-Right-Side-View.md" >}})|Medium| O(n)| O(1)||55.7%|
|0222|Count Complete Tree Nodes|[Go]({{< relref "/ChapterFour/0222.Count-Complete-Tree-Nodes.md" >}})|Medium| O(n)| O(1)||48.8%|
|0226|Invert Binary Tree|[Go]({{< relref "/ChapterFour/0226.Invert-Binary-Tree.md" >}})|Easy| O(n)| O(1)||66.6%|
|0230|Kth Smallest Element in a BST|[Go]({{< relref "/ChapterFour/0230.Kth-Smallest-Element-in-a-BST.md" >}})|Medium| O(n)| O(1)||62.1%|
|0235|Lowest Common Ancestor of a Binary Search Tree|[Go]({{< relref "/ChapterFour/0235.Lowest-Common-Ancestor-of-a-Binary-Search-Tree.md" >}})|Easy| O(n)| O(1)||51.4%|
|0236|Lowest Common Ancestor of a Binary Tree|[Go]({{< relref "/ChapterFour/0236.Lowest-Common-Ancestor-of-a-Binary-Tree.md" >}})|Medium| O(n)| O(1)||48.1%|
|0257|Binary Tree Paths|[Go]({{< relref "/ChapterFour/0257.Binary-Tree-Paths.md" >}})|Easy| O(n)| O(1)||53.2%|
|0337|House Robber III|[Go]({{< relref "/ChapterFour/0337.House-Robber-III.md" >}})|Medium||||51.7%|
|0404|Sum of Left Leaves|[Go]({{< relref "/ChapterFour/0404.Sum-of-Left-Leaves.md" >}})|Easy| O(n)| O(1)||52.2%|
|0437|Path Sum III|[Go]({{< relref "/ChapterFour/0437.Path-Sum-III.md" >}})|Medium| O(n)| O(1)||48.0%|
|0508|Most Frequent Subtree Sum|[Go]({{< relref "/ChapterFour/0508.Most-Frequent-Subtree-Sum.md" >}})|Medium||||58.9%|
|0513|Find Bottom Left Tree Value|[Go]({{< relref "/ChapterFour/0513.Find-Bottom-Left-Tree-Value.md" >}})|Medium||||62.3%|
|0515|Find Largest Value in Each Tree Row|[Go]({{< relref "/ChapterFour/0515.Find-Largest-Value-in-Each-Tree-Row.md" >}})|Medium| O(n)| O(n)||62.0%|
|0563|Binary Tree Tilt|[Go]({{< relref "/ChapterFour/0563.Binary-Tree-Tilt.md" >}})|Easy||||52.6%|
|0572|Subtree of Another Tree|[Go]({{< relref "/ChapterFour/0572.Subtree-of-Another-Tree.md" >}})|Easy||||44.4%|
|0637|Average of Levels in Binary Tree|[Go]({{< relref "/ChapterFour/0637.Average-of-Levels-in-Binary-Tree.md" >}})|Easy| O(n)| O(n)||64.5%|
|0653|Two Sum IV - Input is a BST|[Go]({{< relref "/ChapterFour/0653.Two-Sum-IV---Input-is-a-BST.md" >}})|Easy||||56.1%|
|0662|Maximum Width of Binary Tree|[Go]({{< relref "/ChapterFour/0662.Maximum-Width-of-Binary-Tree.md" >}})|Medium||||40.0%|
|0684|Redundant Connection|[Go]({{< relref "/ChapterFour/0684.Redundant-Connection.md" >}})|Medium||||58.7%|
|0685|Redundant Connection II|[Go]({{< relref "/ChapterFour/0685.Redundant-Connection-II.md" >}})|Hard||||32.9%|
|0834|Sum of Distances in Tree|[Go]({{< relref "/ChapterFour/0834.Sum-of-Distances-in-Tree.md" >}})|Hard||||45.5%|
|0863|All Nodes Distance K in Binary Tree|[Go]({{< relref "/ChapterFour/0863.All-Nodes-Distance-K-in-Binary-Tree.md" >}})|Medium||||57.5%|
|0872|Leaf-Similar Trees|[Go]({{< relref "/ChapterFour/0872.Leaf-Similar-Trees.md" >}})|Easy||||64.5%|
|0897|Increasing Order Search Tree|[Go]({{< relref "/ChapterFour/0897.Increasing-Order-Search-Tree.md" >}})|Easy||||74.3%|
|0968|Binary Tree Cameras|[Go]({{< relref "/ChapterFour/0968.Binary-Tree-Cameras.md" >}})|Hard||||38.5%|
|0979|Distribute Coins in Binary Tree|[Go]({{< relref "/ChapterFour/0979.Distribute-Coins-in-Binary-Tree.md" >}})|Medium||||69.5%|
|0993|Cousins in Binary Tree|[Go]({{< relref "/ChapterFour/0993.Cousins-in-Binary-Tree.md" >}})|Easy| O(n)| O(1)||52.2%|
|1026|Maximum Difference Between Node and Ancestor|[Go]({{< relref "/ChapterFour/1026.Maximum-Difference-Between-Node-and-Ancestor.md" >}})|Medium||||69.1%|
|1028|Recover a Tree From Preorder Traversal|[Go]({{< relref "/ChapterFour/1028.Recover-a-Tree-From-Preorder-Traversal.md" >}})|Hard||||70.7%|
|1110|Delete Nodes And Return Forest|[Go]({{< relref "/ChapterFour/1110.Delete-Nodes-And-Return-Forest.md" >}})|Medium||||67.5%|
|1123|Lowest Common Ancestor of Deepest Leaves|[Go]({{< relref "/ChapterFour/1123.Lowest-Common-Ancestor-of-Deepest-Leaves.md" >}})|Medium||||67.8%|
|1145|Binary Tree Coloring Game|[Go]({{< relref "/ChapterFour/1145.Binary-Tree-Coloring-Game.md" >}})|Medium||||51.4%|
|1302|Deepest Leaves Sum|[Go]({{< relref "/ChapterFour/1302.Deepest-Leaves-Sum.md" >}})|Medium||||84.1%|
|1305|All Elements in Two Binary Search Trees|[Go]({{< relref "/ChapterFour/1305.All-Elements-in-Two-Binary-Search-Trees.md" >}})|Medium||||77.8%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

113
website/content/ChapterTwo/Two_Pointers.md
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@ -28,56 +28,63 @@ type: docs
- 替换字母以后，相同字母能出现连续最长的长度。第 424 题。
- SUM 问题集。第 1 题，第 15 题，第 16 题，第 18 题，第 167 题，第 923 题，第 1074 题。
| Title | Solution | Difficulty | Time | Space |收藏|
| ----- | :--------: | :----------: | :----: | :-----: | :-----: |
|3. Longest Substring Without Repeating Characters | [Go]({{< relref "/ChapterFour/0003.Longest-Substring-Without-Repeating-Characters.md" >}})| Medium | O(n)| O(1)|❤️|
|11. Container With Most Water | [Go]({{< relref "/ChapterFour/0011.Container-With-Most-Water.md" >}})| Medium | O(n)| O(1)||
|15. 3Sum | [Go]({{< relref "/ChapterFour/0015.3Sum.md" >}})| Medium | O(n^2)| O(n)|❤️|
|16. 3Sum Closest | [Go]({{< relref "/ChapterFour/0016.3Sum-Closest.md" >}})| Medium | O(n^2)| O(1)|❤️|
|18. 4Sum | [Go]({{< relref "/ChapterFour/0018.4Sum.md" >}})| Medium | O(n^3)| O(n^2)|❤️|
|19. Remove Nth Node From End of List | [Go]({{< relref "/ChapterFour/0019.Remove-Nth-Node-From-End-of-List.md" >}})| Medium | O(n)| O(1)||
|26. Remove Duplicates from Sorted Array | [Go]({{< relref "/ChapterFour/0026.Remove-Duplicates-from-Sorted-Array.md" >}})| Easy | O(n)| O(1)||
|27. Remove Element | [Go]({{< relref "/ChapterFour/0027.Remove-Element.md" >}})| Easy | O(n)| O(1)||
|28. Implement strStr() | [Go]({{< relref "/ChapterFour/0028.Implement-strStr.md" >}})| Easy | O(n)| O(1)||
|30. Substring with Concatenation of All Words | [Go]({{< relref "/ChapterFour/0030.Substring-with-Concatenation-of-All-Words.md" >}})| Hard | O(n)| O(n)|❤️|
|42. Trapping Rain Water | [Go]({{< relref "/ChapterFour/0042.Trapping-Rain-Water.md" >}})| Hard | O(n)| O(1)|❤️|
|61. Rotate List | [Go]({{< relref "/ChapterFour/0061.Rotate-List.md" >}})| Medium | O(n)| O(1)||
|75. Sort Colors | [Go]({{< relref "/ChapterFour/0075.Sort-Colors.md" >}})| Medium| O(n)| O(1)|❤️|
|76. Minimum Window Substring | [Go]({{< relref "/ChapterFour/0076.Minimum-Window-Substring.md" >}})| Hard | O(n)| O(n)|❤️|
|80. Remove Duplicates from Sorted Array II | [Go]({{< relref "/ChapterFour/0080.Remove-Duplicates-from-Sorted-Array-II.md" >}})| Medium | O(n)| O(1||
|86. Partition List | [Go]({{< relref "/ChapterFour/0086.Partition-List.md" >}})| Medium | O(n)| O(1)|❤️|
|88. Merge Sorted Array | [Go]({{< relref "/ChapterFour/0088.Merge-Sorted-Array.md" >}})| Easy | O(n)| O(1)|❤️|
|125. Valid Palindrome | [Go]({{< relref "/ChapterFour/0125.Valid-Palindrome.md" >}})| Easy | O(n)| O(1)||
|141. Linked List Cycle | [Go]({{< relref "/ChapterFour/0141.Linked-List-Cycle.md" >}})| Easy | O(n)| O(1)|❤️|
|142. Linked List Cycle II | [Go]({{< relref "/ChapterFour/0142.Linked-List-Cycle-II.md" >}})| Medium | O(n)| O(1)|❤️|
|167. Two Sum II - Input array is sorted | [Go]({{< relref "/ChapterFour/0167.Two-Sum-II---Input-array-is-sorted.md" >}})| Easy | O(n)| O(1)||
|209. Minimum Size Subarray Sum | [Go]({{< relref "/ChapterFour/0209.Minimum-Size-Subarray-Sum.md" >}})| Medium | O(n)| O(1)||
|234. Palindrome Linked List | [Go]({{< relref "/ChapterFour/0234.Palindrome-Linked-List.md" >}})| Easy | O(n)| O(1)||
|283. Move Zeroes | [Go]({{< relref "/ChapterFour/0283.Move-Zeroes.md" >}})| Easy | O(n)| O(1)||
|287. Find the Duplicate Number | [Go]({{< relref "/ChapterFour/0287.Find-the-Duplicate-Number.md" >}})| Easy | O(n)| O(1)|❤️|
|344. Reverse String | [Go]({{< relref "/ChapterFour/0344.Reverse-String.md" >}})| Easy | O(n)| O(1)||
|345. Reverse Vowels of a String | [Go]({{< relref "/ChapterFour/0345.Reverse-Vowels-of-a-String.md" >}})| Easy | O(n)| O(1)||
|349. Intersection of Two Arrays | [Go]({{< relref "/ChapterFour/0349.Intersection-of-Two-Arrays.md" >}})| Easy | O(n)| O(n) ||
|350. Intersection of Two Arrays II | [Go]({{< relref "/ChapterFour/0350.Intersection-of-Two-Arrays-II.md" >}})| Easy | O(n)| O(n) ||
|424. Longest Repeating Character Replacement | [Go]({{< relref "/ChapterFour/0424.Longest-Repeating-Character-Replacement.md" >}})| Medium | O(n)| O(1) ||
|524. Longest Word in Dictionary through Deleting | [Go]({{< relref "/ChapterFour/0524.Longest-Word-in-Dictionary-through-Deleting.md" >}})| Medium | O(n)| O(1) ||
|532. K-diff Pairs in an Array | [Go]({{< relref "/ChapterFour/0532.K-diff-Pairs-in-an-Array.md" >}})| Easy | O(n)| O(n)||
|567. Permutation in String | [Go]({{< relref "/ChapterFour/0567.Permutation-in-String.md" >}})| Medium | O(n)| O(1)|❤️|
|713. Subarray Product Less Than K | [Go]({{< relref "/ChapterFour/0713.Subarray-Product-Less-Than-K.md" >}})| Medium | O(n)| O(1)||
|763. Partition Labels | [Go]({{< relref "/ChapterFour/0763.Partition-Labels.md" >}})| Medium | O(n)| O(1)|❤️|
|826. Most Profit Assigning Work | [Go]({{< relref "/ChapterFour/0826.Most-Profit-Assigning-Work.md" >}})| Medium | O(n log n)| O(n)||
|828. Unique Letter String | [Go]({{< relref "/ChapterFour/0828.COPYRIGHT-PROBLEM-XXX.md" >}})| Hard | O(n)| O(1)|❤️|
|838. Push Dominoes | [Go]({{< relref "/ChapterFour/0838.Push-Dominoes.md" >}})| Medium | O(n)| O(n)||
|844. Backspace String Compare | [Go]({{< relref "/ChapterFour/0844.Backspace-String-Compare.md" >}})| Easy | O(n)| O(n) ||
|845. Longest Mountain in Array | [Go]({{< relref "/ChapterFour/0845.Longest-Mountain-in-Array.md" >}})| Medium | O(n)| O(1) ||
|881. Boats to Save People | [Go]({{< relref "/ChapterFour/0881.Boats-to-Save-People.md" >}})| Medium | O(n log n)| O(1) ||
|904. Fruit Into Baskets | [Go]({{< relref "/ChapterFour/0904.Fruit-Into-Baskets.md" >}})| Medium | O(n log n)| O(1) ||
|923. 3Sum With Multiplicity | [Go]({{< relref "/ChapterFour/0923.3Sum-With-Multiplicity.md" >}})| Medium | O(n^2)| O(n) ||
|925. Long Pressed Name | [Go]({{< relref "/ChapterFour/0925.Long-Pressed-Name.md" >}})| Easy | O(n)| O(1)||
|930. Binary Subarrays With Sum | [Go]({{< relref "/ChapterFour/0930.Binary-Subarrays-With-Sum.md" >}})| Medium | O(n)| O(n) |❤️|
|977. Squares of a Sorted Array | [Go]({{< relref "/ChapterFour/0977.Squares-of-a-Sorted-Array.md" >}})| Easy | O(n)| O(1)||
|986. Interval List Intersections | [Go]({{< relref "/ChapterFour/0986.Interval-List-Intersections.md" >}})| Medium | O(n)| O(1)||
|992. Subarrays with K Different Integers | [Go]({{< relref "/ChapterFour/0992.Subarrays-with-K-Different-Integers.md" >}})| Hard | O(n)| O(n)|❤️|
|1004. Max Consecutive Ones III | [Go]({{< relref "/ChapterFour/1004.Max-Consecutive-Ones-III.md" >}})| Medium | O(n)| O(1) ||
|1093. Statistics from a Large Sample | [Go]({{< relref "/ChapterFour/1093.Statistics-from-a-Large-Sample.md" >}})| Medium | O(n)| O(1) ||
|---------------------------------------|---------------------------------|--------------------------|-----------------------|-----------|--------|
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0003|Longest Substring Without Repeating Characters|[Go]({{< relref "/ChapterFour/0003.Longest-Substring-Without-Repeating-Characters.md" >}})|Medium| O(n)| O(1)|❤️|31.3%|
|0011|Container With Most Water|[Go]({{< relref "/ChapterFour/0011.Container-With-Most-Water.md" >}})|Medium| O(n)| O(1)||52.2%|
|0015|3Sum|[Go]({{< relref "/ChapterFour/0015.3Sum.md" >}})|Medium| O(n^2)| O(n)|❤️|27.8%|
|0016|3Sum Closest|[Go]({{< relref "/ChapterFour/0016.3Sum-Closest.md" >}})|Medium| O(n^2)| O(1)|❤️|46.2%|
|0018|4Sum|[Go]({{< relref "/ChapterFour/0018.4Sum.md" >}})|Medium| O(n^3)| O(n^2)|❤️|34.6%|
|0019|Remove Nth Node From End of List|[Go]({{< relref "/ChapterFour/0019.Remove-Nth-Node-From-End-of-List.md" >}})|Medium| O(n)| O(1)||35.6%|
|0026|Remove Duplicates from Sorted Array|[Go]({{< relref "/ChapterFour/0026.Remove-Duplicates-from-Sorted-Array.md" >}})|Easy| O(n)| O(1)||46.3%|
|0027|Remove Element|[Go]({{< relref "/ChapterFour/0027.Remove-Element.md" >}})|Easy| O(n)| O(1)||49.0%|
|0028|Implement strStr()|[Go]({{< relref "/ChapterFour/0028.Implement-strStr.md" >}})|Easy| O(n)| O(1)||35.0%|
|0030|Substring with Concatenation of All Words|[Go]({{< relref "/ChapterFour/0030.Substring-with-Concatenation-of-All-Words.md" >}})|Hard| O(n)| O(n)|❤️|26.0%|
|0042|Trapping Rain Water|[Go]({{< relref "/ChapterFour/0042.Trapping-Rain-Water.md" >}})|Hard| O(n)| O(1)|❤️|50.7%|
|0061|Rotate List|[Go]({{< relref "/ChapterFour/0061.Rotate-List.md" >}})|Medium| O(n)| O(1)||31.6%|
|0075|Sort Colors|[Go]({{< relref "/ChapterFour/0075.Sort-Colors.md" >}})|Medium| O(n)| O(1)|❤️|48.9%|
|0076|Minimum Window Substring|[Go]({{< relref "/ChapterFour/0076.Minimum-Window-Substring.md" >}})|Hard| O(n)| O(n)|❤️|35.7%|
|0080|Remove Duplicates from Sorted Array II|[Go]({{< relref "/ChapterFour/0080.Remove-Duplicates-from-Sorted-Array-II.md" >}})|Medium| O(n)| O(1||45.8%|
|0086|Partition List|[Go]({{< relref "/ChapterFour/0086.Partition-List.md" >}})|Medium| O(n)| O(1)|❤️|43.0%|
|0088|Merge Sorted Array|[Go]({{< relref "/ChapterFour/0088.Merge-Sorted-Array.md" >}})|Easy| O(n)| O(1)|❤️|40.6%|
|0125|Valid Palindrome|[Go]({{< relref "/ChapterFour/0125.Valid-Palindrome.md" >}})|Easy| O(n)| O(1)||37.9%|
|0141|Linked List Cycle|[Go]({{< relref "/ChapterFour/0141.Linked-List-Cycle.md" >}})|Easy| O(n)| O(1)|❤️|42.2%|
|0142|Linked List Cycle II|[Go]({{< relref "/ChapterFour/0142.Linked-List-Cycle-II.md" >}})|Medium| O(n)| O(1)|❤️|39.3%|
|0167|Two Sum II - Input array is sorted|[Go]({{< relref "/ChapterFour/0167.Two-Sum-II---Input-array-is-sorted.md" >}})|Easy| O(n)| O(1)||55.4%|
|0209|Minimum Size Subarray Sum|[Go]({{< relref "/ChapterFour/0209.Minimum-Size-Subarray-Sum.md" >}})|Medium| O(n)| O(1)||39.2%|
|0234|Palindrome Linked List|[Go]({{< relref "/ChapterFour/0234.Palindrome-Linked-List.md" >}})|Easy| O(n)| O(1)||40.2%|
|0283|Move Zeroes|[Go]({{< relref "/ChapterFour/0283.Move-Zeroes.md" >}})|Easy| O(n)| O(1)||58.4%|
|0287|Find the Duplicate Number|[Go]({{< relref "/ChapterFour/0287.Find-the-Duplicate-Number.md" >}})|Medium| O(n)| O(1)|❤️|57.1%|
|0344|Reverse String|[Go]({{< relref "/ChapterFour/0344.Reverse-String.md" >}})|Easy| O(n)| O(1)||70.0%|
|0345|Reverse Vowels of a String|[Go]({{< relref "/ChapterFour/0345.Reverse-Vowels-of-a-String.md" >}})|Easy| O(n)| O(1)||44.9%|
|0349|Intersection of Two Arrays|[Go]({{< relref "/ChapterFour/0349.Intersection-of-Two-Arrays.md" >}})|Easy| O(n)| O(n) ||64.4%|
|0350|Intersection of Two Arrays II|[Go]({{< relref "/ChapterFour/0350.Intersection-of-Two-Arrays-II.md" >}})|Easy| O(n)| O(n) ||51.9%|
|0424|Longest Repeating Character Replacement|[Go]({{< relref "/ChapterFour/0424.Longest-Repeating-Character-Replacement.md" >}})|Medium| O(n)| O(1) ||48.0%|
|0457|Circular Array Loop|[Go]({{< relref "/ChapterFour/0457.Circular-Array-Loop.md" >}})|Medium||||30.0%|
|0524|Longest Word in Dictionary through Deleting|[Go]({{< relref "/ChapterFour/0524.Longest-Word-in-Dictionary-through-Deleting.md" >}})|Medium| O(n)| O(1) ||48.9%|
|0532|K-diff Pairs in an Array|[Go]({{< relref "/ChapterFour/0532.K-diff-Pairs-in-an-Array.md" >}})|Medium| O(n)| O(n)||34.9%|
|0567|Permutation in String|[Go]({{< relref "/ChapterFour/0567.Permutation-in-String.md" >}})|Medium| O(n)| O(1)|❤️|44.6%|
|0632|Smallest Range Covering Elements from K Lists|[Go]({{< relref "/ChapterFour/0632.Smallest-Range-Covering-Elements-from-K-Lists.md" >}})|Hard||||53.9%|
|0713|Subarray Product Less Than K|[Go]({{< relref "/ChapterFour/0713.Subarray-Product-Less-Than-K.md" >}})|Medium| O(n)| O(1)||40.4%|
|0763|Partition Labels|[Go]({{< relref "/ChapterFour/0763.Partition-Labels.md" >}})|Medium| O(n)| O(1)|❤️|77.9%|
|0826|Most Profit Assigning Work|[Go]({{< relref "/ChapterFour/0826.Most-Profit-Assigning-Work.md" >}})|Medium| O(n log n)| O(n)||38.9%|
|0828|Count Unique Characters of All Substrings of a Given String|[Go]({{< relref "/ChapterFour/0828.Count-Unique-Characters-of-All-Substrings-of-a-Given-String.md" >}})|Hard| O(n)| O(1)|❤️|46.8%|
|0838|Push Dominoes|[Go]({{< relref "/ChapterFour/0838.Push-Dominoes.md" >}})|Medium| O(n)| O(n)||49.7%|
|0844|Backspace String Compare|[Go]({{< relref "/ChapterFour/0844.Backspace-String-Compare.md" >}})|Easy| O(n)| O(n) ||46.8%|
|0845|Longest Mountain in Array|[Go]({{< relref "/ChapterFour/0845.Longest-Mountain-in-Array.md" >}})|Medium| O(n)| O(1) ||38.5%|
|0881|Boats to Save People|[Go]({{< relref "/ChapterFour/0881.Boats-to-Save-People.md" >}})|Medium| O(n log n)| O(1) ||48.7%|
|0904|Fruit Into Baskets|[Go]({{< relref "/ChapterFour/0904.Fruit-Into-Baskets.md" >}})|Medium| O(n log n)| O(1) ||42.9%|
|0923|3Sum With Multiplicity|[Go]({{< relref "/ChapterFour/0923.3Sum-With-Multiplicity.md" >}})|Medium| O(n^2)| O(n) ||36.0%|
|0925|Long Pressed Name|[Go]({{< relref "/ChapterFour/0925.Long-Pressed-Name.md" >}})|Easy| O(n)| O(1)||38.4%|
|0930|Binary Subarrays With Sum|[Go]({{< relref "/ChapterFour/0930.Binary-Subarrays-With-Sum.md" >}})|Medium| O(n)| O(n) |❤️|44.3%|
|0977|Squares of a Sorted Array|[Go]({{< relref "/ChapterFour/0977.Squares-of-a-Sorted-Array.md" >}})|Easy| O(n)| O(1)||72.3%|
|0986|Interval List Intersections|[Go]({{< relref "/ChapterFour/0986.Interval-List-Intersections.md" >}})|Medium| O(n)| O(1)||68.1%|
|0992|Subarrays with K Different Integers|[Go]({{< relref "/ChapterFour/0992.Subarrays-with-K-Different-Integers.md" >}})|Hard| O(n)| O(n)|❤️|50.4%|
|1004|Max Consecutive Ones III|[Go]({{< relref "/ChapterFour/1004.Max-Consecutive-Ones-III.md" >}})|Medium| O(n)| O(1) ||60.5%|
|1093|Statistics from a Large Sample|[Go]({{< relref "/ChapterFour/1093.Statistics-from-a-Large-Sample.md" >}})|Medium| O(n)| O(1) ||49.3%|
|1234|Replace the Substring for Balanced String|[Go]({{< relref "/ChapterFour/1234.Replace-the-Substring-for-Balanced-String.md" >}})|Medium||||34.4%|
|1658|Minimum Operations to Reduce X to Zero|[Go]({{< relref "/ChapterFour/1658.Minimum-Operations-to-Reduce-X-to-Zero.md" >}})|Medium||||33.6%|
|1695|Maximum Erasure Value|[Go]({{< relref "/ChapterFour/1695.Maximum-Erasure-Value.md" >}})|Medium||||49.5%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|
|

44
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@ -15,24 +15,26 @@ type: docs
- 能用并查集的题目，一般也可以用 DFS 和 BFS 解答，只不过时间复杂度会高一点。
| Title | Solution | Difficulty | Time | Space | 收藏 |
| ----- | :--------: | :----------: | :----: | :-----: |:-----: |
|128. Longest Consecutive Sequence | [Go]({{< relref "/ChapterFour/0128.Longest-Consecutive-Sequence.md" >}})| Hard | O(n)| O(n)|❤️|
|130. Surrounded Regions | [Go]({{< relref "/ChapterFour/0130.Surrounded-Regions.md" >}})| Medium | O(m\*n)| O(m\*n)||
|200. Number of Islands | [Go]({{< relref "/ChapterFour/0200.Number-of-Islands.md" >}})| Medium | O(m\*n)| O(m\*n)||
|399. Evaluate Division | [Go]({{< relref "/ChapterFour/0399.Evaluate-Division.md" >}})| Medium | O(n)| O(n)||
|547. Friend Circles | [Go]({{< relref "/ChapterFour/0547.Friend-Circles.md" >}})| Medium | O(n^2)| O(n)||
|684. Redundant Connection | [Go]({{< relref "/ChapterFour/0684.Redundant-Connection.md" >}})| Medium | O(n)| O(n)||
|685. Redundant Connection II | [Go]({{< relref "/ChapterFour/0685.Redundant-Connection-II.md" >}})| Hard | O(n)| O(n)||
|721. Accounts Merge | [Go]({{< relref "/ChapterFour/0721.Accounts-Merge.md" >}})| Medium | O(n)| O(n)|❤️|
|765. Couples Holding Hands | [Go]({{< relref "/ChapterFour/0765.Couples-Holding-Hands.md" >}})| Hard | O(n)| O(n)|❤️|
|778. Swim in Rising Water | [Go]({{< relref "/ChapterFour/0778.Swim-in-Rising-Water.md" >}})| Hard | O(n^2)| O(n)|❤️|
|803. Bricks Falling When Hit | [Go]({{< relref "/ChapterFour/0803.Bricks-Falling-When-Hit.md" >}})| Hard | O(n^2)| O(n)|❤️|
|839. Similar String Groups | [Go]({{< relref "/ChapterFour/0839.Similar-String-Groups.md" >}})| Hard | O(n^2)| O(n)||
|924. Minimize Malware Spread | [Go]({{< relref "/ChapterFour/0924.Minimize-Malware-Spread.md" >}})| Hard | O(m\*n)| O(n)||
|928. Minimize Malware Spread II | [Go]({{< relref "/ChapterFour/0928.Minimize-Malware-Spread-II.md" >}})| Hard | O(m\*n)| O(n)|❤️|
|947. Most Stones Removed with Same Row or Column | [Go]({{< relref "/ChapterFour/0947.Most-Stones-Removed-with-Same-Row-or-Column.md" >}})| Medium | O(n)| O(n)||
|952. Largest Component Size by Common Factor | [Go]({{< relref "/ChapterFour/0952.Largest-Component-Size-by-Common-Factor.md" >}})| Hard | O(n)| O(n)|❤️|
|959. Regions Cut By Slashes | [Go]({{< relref "/ChapterFour/0959.Regions-Cut-By-Slashes.md" >}})| Medium | O(n^2)| O(n^2)|❤️|
|990. Satisfiability of Equality Equations | [Go]({{< relref "/ChapterFour/0990.Satisfiability-of-Equality-Equations.md" >}})| Medium | O(n)| O(n)||
|---------------------------------------|---------------------------------|--------------------------|-----------------------|-----------|--------|
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0128|Longest Consecutive Sequence|[Go]({{< relref "/ChapterFour/0128.Longest-Consecutive-Sequence.md" >}})|Hard| O(n)| O(n)|❤️|46.0%|
|0130|Surrounded Regions|[Go]({{< relref "/ChapterFour/0130.Surrounded-Regions.md" >}})|Medium| O(m\*n)| O(m\*n)||29.2%|
|0200|Number of Islands|[Go]({{< relref "/ChapterFour/0200.Number-of-Islands.md" >}})|Medium| O(m\*n)| O(m\*n)||48.6%|
|0399|Evaluate Division|[Go]({{< relref "/ChapterFour/0399.Evaluate-Division.md" >}})|Medium| O(n)| O(n)||54.0%|
|0547|Number of Provinces|[Go]({{< relref "/ChapterFour/0547.Number-of-Provinces.md" >}})|Medium| O(n^2)| O(n)||60.1%|
|0684|Redundant Connection|[Go]({{< relref "/ChapterFour/0684.Redundant-Connection.md" >}})|Medium| O(n)| O(n)||58.7%|
|0685|Redundant Connection II|[Go]({{< relref "/ChapterFour/0685.Redundant-Connection-II.md" >}})|Hard| O(n)| O(n)||32.9%|
|0721|Accounts Merge|[Go]({{< relref "/ChapterFour/0721.Accounts-Merge.md" >}})|Medium| O(n)| O(n)|❤️|51.2%|
|0765|Couples Holding Hands|[Go]({{< relref "/ChapterFour/0765.Couples-Holding-Hands.md" >}})|Hard| O(n)| O(n)|❤️|55.3%|
|0778|Swim in Rising Water|[Go]({{< relref "/ChapterFour/0778.Swim-in-Rising-Water.md" >}})|Hard| O(n^2)| O(n)|❤️|54.4%|
|0803|Bricks Falling When Hit|[Go]({{< relref "/ChapterFour/0803.Bricks-Falling-When-Hit.md" >}})|Hard| O(n^2)| O(n)|❤️|31.2%|
|0839|Similar String Groups|[Go]({{< relref "/ChapterFour/0839.Similar-String-Groups.md" >}})|Hard| O(n^2)| O(n)||40.0%|
|0924|Minimize Malware Spread|[Go]({{< relref "/ChapterFour/0924.Minimize-Malware-Spread.md" >}})|Hard| O(m\*n)| O(n)||41.8%|
|0928|Minimize Malware Spread II|[Go]({{< relref "/ChapterFour/0928.Minimize-Malware-Spread-II.md" >}})|Hard| O(m\*n)| O(n)|❤️|41.2%|
|0947|Most Stones Removed with Same Row or Column|[Go]({{< relref "/ChapterFour/0947.Most-Stones-Removed-with-Same-Row-or-Column.md" >}})|Medium| O(n)| O(n)||55.4%|
|0952|Largest Component Size by Common Factor|[Go]({{< relref "/ChapterFour/0952.Largest-Component-Size-by-Common-Factor.md" >}})|Hard| O(n)| O(n)|❤️|36.1%|
|0959|Regions Cut By Slashes|[Go]({{< relref "/ChapterFour/0959.Regions-Cut-By-Slashes.md" >}})|Medium| O(n^2)| O(n^2)|❤️|66.8%|
|0990|Satisfiability of Equality Equations|[Go]({{< relref "/ChapterFour/0990.Satisfiability-of-Equality-Equations.md" >}})|Medium| O(n)| O(n)||46.4%|
|1202|Smallest String With Swaps|[Go]({{< relref "/ChapterFour/1202.Smallest-String-With-Swaps.md" >}})|Medium||||48.3%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

2
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@ -184,7 +184,7 @@ headless: true
- [0208.Implement-Trie-Prefix-Tree]({{< relref "/ChapterFour/0208.Implement-Trie-Prefix-Tree.md" >}})
- [0209.Minimum-Size-Subarray-Sum]({{< relref "/ChapterFour/0209.Minimum-Size-Subarray-Sum.md" >}})
- [0210.Course-Schedule-II]({{< relref "/ChapterFour/0210.Course-Schedule-II.md" >}})
- [0211.Add-and-Search-Word---Data-structure-design]({{< relref "/ChapterFour/0211.Add-and-Search-Word---Data-structure-design.md" >}})
- [0211.Design-Add-and-Search-Words-Data-Structure]({{< relref "/ChapterFour/0211.Design-Add-and-Search-Words-Data-Structure.md" >}})
- [0212.Word-Search-II]({{< relref "/ChapterFour/0212.Word-Search-II.md" >}})
- [0213.House-Robber-II]({{< relref "/ChapterFour/0213.House-Robber-II.md" >}})
- [0215.Kth-Largest-Element-in-an-Array]({{< relref "/ChapterFour/0215.Kth-Largest-Element-in-an-Array.md" >}})