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2021-02-07 20:56:00 +08:00
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@ -126,15 +126,15 @@
| | Easy | Medium | Hard | Total |
|:--------:|:--------:|:--------:|:--------:|:--------:|
|Optimizing|38|49|18|105|
|Accepted|**251**|**326**|**99**|**676**|
|Accepted|**252**|**326**|**99**|**677**|
|Total|461|921|373|1755|
|Perfection Rate|84.9%|85.0%|81.8%|84.5%|
|Completion Rate|54.4%|35.4%|26.5%|38.5%|
|Completion Rate|54.7%|35.4%|26.5%|38.6%|
|------------|----------------------------|----------------------------|----------------------------|----------------------------|
## 二. 目录
以下已经收录了 571 道题的题解，还有 10 道题在尝试优化到 beats 100%
以下已经收录了 572 道题的题解，还有 10 道题在尝试优化到 beats 100%
| No. | Title | Solution | Acceptance | Difficulty | Frequency |
|:--------:|:--------------------------------------------------------------|:--------:|:--------:|:--------:|:--------:|
@ -239,7 +239,7 @@
|0099|Recover Binary Search Tree|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0099.Recover-Binary-Search-Tree)|42.3%|Hard||
|0100|Same Tree|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0100.Same-Tree)|54.1%|Easy||
|0101|Symmetric Tree|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0101.Symmetric-Tree)|48.0%|Easy||
|0102|Binary Tree Level Order Traversal|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0102.Binary-Tree-Level-Order-Traversal)|56.4%|Medium||
|0102|Binary Tree Level Order Traversal|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0102.Binary-Tree-Level-Order-Traversal)|56.5%|Medium||
|0103|Binary Tree Zigzag Level Order Traversal|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0103.Binary-Tree-Zigzag-Level-Order-Traversal)|50.0%|Medium||
|0104|Maximum Depth of Binary Tree|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0104.Maximum-Depth-of-Binary-Tree)|67.9%|Easy||
|0105|Construct Binary Tree from Preorder and Inorder Traversal|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0105.Construct-Binary-Tree-from-Preorder-and-Inorder-Traversal)|51.5%|Medium||
@ -362,7 +362,7 @@
|0222|Count Complete Tree Nodes|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0222.Count-Complete-Tree-Nodes)|49.1%|Medium||
|0223|Rectangle Area|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0223.Rectangle-Area)|38.2%|Medium||
|0224|Basic Calculator|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0224.Basic-Calculator)|38.1%|Hard||
|0225|Implement Stack using Queues|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0225.Implement-Stack-using-Queues)|47.1%|Easy||
|0225|Implement Stack using Queues|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0225.Implement-Stack-using-Queues)|47.2%|Easy||
|0226|Invert Binary Tree|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0226.Invert-Binary-Tree)|66.8%|Easy||
|0227|Basic Calculator II||38.4%|Medium||
|0228|Summary Ranges|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0228.Summary-Ranges)|42.3%|Easy||
@ -627,7 +627,7 @@
|0487|Max Consecutive Ones II||47.9%|Medium||
|0488|Zuma Game||38.5%|Hard||
|0489|Robot Room Cleaner||72.3%|Hard||
|0490|The Maze||52.6%|Medium||
|0490|The Maze||52.7%|Medium||
|0491|Increasing Subsequences|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0491.Increasing-Subsequences)|47.5%|Medium||
|0492|Construct the Rectangle||50.3%|Easy||
|0493|Reverse Pairs|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0493.Reverse-Pairs)|26.7%|Hard||
@ -715,7 +715,7 @@
|0575|Distribute Candies|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0575.Distribute-Candies)|62.0%|Easy||
|0576|Out of Boundary Paths||35.8%|Medium||
|0577|Employee Bonus||71.2%|Easy||
|0578|Get Highest Answer Rate Question||41.5%|Medium||
|0578|Get Highest Answer Rate Question||41.6%|Medium||
|0579|Find Cumulative Salary of an Employee||38.2%|Hard||
|0580|Count Student Number in Departments||51.4%|Medium||
|0581|Shortest Unsorted Continuous Subarray||31.7%|Medium||
@ -754,7 +754,7 @@
|0614|Second Degree Follower||32.4%|Medium||
|0615|Average Salary: Departments VS Company||51.9%|Hard||
|0616|Add Bold Tag in String||44.6%|Medium||
|0617|Merge Two Binary Trees||75.2%|Easy||
|0617|Merge Two Binary Trees||75.3%|Easy||
|0618|Students Report By Geography||59.4%|Hard||
|0619|Biggest Single Number||44.8%|Easy||
|0620|Not Boring Movies||69.6%|Easy||
@ -776,7 +776,7 @@
|0636|Exclusive Time of Functions|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0636.Exclusive-Time-of-Functions)|54.2%|Medium||
|0637|Average of Levels in Binary Tree|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0637.Average-of-Levels-in-Binary-Tree)|64.7%|Easy||
|0638|Shopping Offers|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0638.Shopping-Offers)|52.8%|Medium||
|0639|Decode Ways II||27.6%|Hard||
|0639|Decode Ways II||27.5%|Hard||
|0640|Solve the Equation||42.7%|Medium||
|0641|Design Circular Deque||54.6%|Medium||
|0642|Design Search Autocomplete System||46.1%|Hard||
@ -852,7 +852,7 @@
|0712|Minimum ASCII Delete Sum for Two Strings||59.4%|Medium||
|0713|Subarray Product Less Than K|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0713.Subarray-Product-Less-Than-K)|40.5%|Medium||
|0714|Best Time to Buy and Sell Stock with Transaction Fee|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0714.Best-Time-to-Buy-and-Sell-Stock-with-Transaction-Fee)|56.0%|Medium||
|0715|Range Module|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0715.Range-Module)|40.2%|Hard||
|0715|Range Module|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0715.Range-Module)|40.1%|Hard||
|0716|Max Stack||43.0%|Easy||
|0717|1-bit and 2-bit Characters|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0717.1-bit-and-2-bit-Characters)|47.4%|Easy||
|0718|Maximum Length of Repeated Subarray|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0718.Maximum-Length-of-Repeated-Subarray)|50.3%|Medium||
@ -892,7 +892,7 @@
|0752|Open the Lock||52.7%|Medium||
|0753|Cracking the Safe|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0753.Cracking-the-Safe)|52.2%|Hard||
|0754|Reach a Number||40.5%|Medium||
|0755|Pour Water||44.1%|Medium||
|0755|Pour Water||44.0%|Medium||
|0756|Pyramid Transition Matrix|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0756.Pyramid-Transition-Matrix)|55.5%|Medium||
|0757|Set Intersection Size At Least Two||42.1%|Hard||
|0758|Bold Words in String||47.3%|Easy||
@ -913,7 +913,7 @@
|0773|Sliding Puzzle||60.7%|Hard||
|0774|Minimize Max Distance to Gas Station||48.2%|Hard||
|0775|Global and Local Inversions||42.5%|Medium||
|0776|Split BST||56.6%|Medium||
|0776|Split BST||56.5%|Medium||
|0777|Swap Adjacent in LR String||35.6%|Medium||
|0778|Swim in Rising Water|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0778.Swim-in-Rising-Water)|54.8%|Hard||
|0779|K-th Symbol in Grammar||38.5%|Medium||
@ -958,7 +958,7 @@
|0818|Race Car||39.8%|Hard||
|0819|Most Common Word|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0819.Most-Common-Word)|45.5%|Easy||
|0820|Short Encoding of Words||51.5%|Medium||
|0821|Shortest Distance to a Character||68.2%|Easy||
|0821|Shortest Distance to a Character|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0821.Shortest-Distance-to-a-Character)|68.6%|Easy||
|0822|Card Flipping Game||43.6%|Medium||
|0823|Binary Trees With Factors||36.5%|Medium||
|0824|Goat Latin||66.4%|Easy||
@ -967,7 +967,7 @@
|0827|Making A Large Island||47.2%|Hard||
|0828|Count Unique Characters of All Substrings of a Given String|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0828.Count-Unique-Characters-of-All-Substrings-of-a-Given-String)|46.8%|Hard||
|0829|Consecutive Numbers Sum||39.3%|Hard||
|0830|Positions of Large Groups|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0830.Positions-of-Large-Groups)|50.3%|Easy||
|0830|Positions of Large Groups|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0830.Positions-of-Large-Groups)|50.4%|Easy||
|0831|Masking Personal Information||44.8%|Medium||
|0832|Flipping an Image|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/0832.Flipping-an-Image)|78.1%|Easy||
|0833|Find And Replace in String||51.4%|Medium||
@ -1158,7 +1158,7 @@
|1018|Binary Prefix Divisible By 5|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1018.Binary-Prefix-Divisible-By-5)|47.8%|Easy||
|1019|Next Greater Node In Linked List|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1019.Next-Greater-Node-In-Linked-List)|58.2%|Medium||
|1020|Number of Enclaves|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1020.Number-of-Enclaves)|58.9%|Medium||
|1021|Remove Outermost Parentheses|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1021.Remove-Outermost-Parentheses)|78.8%|Easy||
|1021|Remove Outermost Parentheses|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1021.Remove-Outermost-Parentheses)|78.9%|Easy||
|1022|Sum of Root To Leaf Binary Numbers||71.5%|Easy||
|1023|Camelcase Matching||57.4%|Medium||
|1024|Video Stitching||49.0%|Medium||
@ -1225,7 +1225,7 @@
|1085|Sum of Digits in the Minimum Number||75.1%|Easy||
|1086|High Five||78.3%|Easy||
|1087|Brace Expansion||63.0%|Medium||
|1088|Confusing Number II||45.4%|Hard||
|1088|Confusing Number II||45.3%|Hard||
|1089|Duplicate Zeros|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1089.Duplicate-Zeros)|52.0%|Easy||
|1090|Largest Values From Labels||60.0%|Medium||
|1091|Shortest Path in Binary Matrix||39.1%|Medium||
@ -1239,7 +1239,7 @@
|1099|Two Sum Less Than K||60.8%|Easy||
|1100|Find K-Length Substrings With No Repeated Characters||73.3%|Medium||
|1101|The Earliest Moment When Everyone Become Friends||67.9%|Medium||
|1102|Path With Maximum Minimum Value||50.3%|Medium||
|1102|Path With Maximum Minimum Value||50.4%|Medium||
|1103|Distribute Candies to People||63.5%|Easy||
|1104|Path In Zigzag Labelled Binary Tree||73.1%|Medium||
|1105|Filling Bookcase Shelves|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1105.Filling-Bookcase-Shelves)|57.5%|Medium||
@ -1376,7 +1376,7 @@
|1236|Web Crawler||64.7%|Medium||
|1237|Find Positive Integer Solution for a Given Equation||69.6%|Medium||
|1238|Circular Permutation in Binary Representation||66.1%|Medium||
|1239|Maximum Length of a Concatenated String with Unique Characters||49.5%|Medium||
|1239|Maximum Length of a Concatenated String with Unique Characters||49.6%|Medium||
|1240|Tiling a Rectangle with the Fewest Squares||52.4%|Hard||
|1241|Number of Comments per Post||67.8%|Easy||
|1242|Web Crawler Multithreaded||47.7%|Medium||
@ -1460,7 +1460,7 @@
|1320|Minimum Distance to Type a Word Using Two Fingers||62.1%|Hard||
|1321|Restaurant Growth||70.9%|Medium||
|1322|Ads Performance||58.0%|Easy||
|1323|Maximum 69 Number||77.9%|Easy||
|1323|Maximum 69 Number||78.0%|Easy||
|1324|Print Words Vertically||58.8%|Medium||
|1325|Delete Leaves With a Given Value||73.7%|Medium||
|1326|Minimum Number of Taps to Open to Water a Garden||46.4%|Hard||
@ -1490,7 +1490,7 @@
|1350|Students With Invalid Departments||90.4%|Easy||
|1351|Count Negative Numbers in a Sorted Matrix||76.0%|Easy||
|1352|Product of the Last K Numbers||44.2%|Medium||
|1353|Maximum Number of Events That Can Be Attended||30.5%|Medium||
|1353|Maximum Number of Events That Can Be Attended||30.4%|Medium||
|1354|Construct Target Array With Multiple Sums||31.3%|Hard||
|1355|Activity Participants||74.4%|Medium||
|1356|Sort Integers by The Number of 1 Bits||69.7%|Easy||
@ -1556,7 +1556,7 @@
|1416|Restore The Array||36.3%|Hard||
|1417|Reformat The String||55.2%|Easy||
|1418|Display Table of Food Orders in a Restaurant||68.6%|Medium||
|1419|Minimum Number of Frogs Croaking||47.3%|Medium||
|1419|Minimum Number of Frogs Croaking||47.4%|Medium||
|1420|Build Array Where You Can Find The Maximum Exactly K Comparisons||64.3%|Hard||
|1421|NPV Queries||82.0%|Medium||
|1422|Maximum Score After Splitting a String||56.0%|Easy||
@ -1599,7 +1599,7 @@
|1459|Rectangles Area||64.6%|Medium||
|1460|Make Two Arrays Equal by Reversing Sub-arrays||72.2%|Easy||
|1461|Check If a String Contains All Binary Codes of Size K||47.2%|Medium||
|1462|Course Schedule IV||44.5%|Medium||
|1462|Course Schedule IV||44.6%|Medium||
|1463|Cherry Pickup II|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1463.Cherry-Pickup-II)|69.4%|Hard||
|1464|Maximum Product of Two Elements in an Array|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1464.Maximum-Product-of-Two-Elements-in-an-Array)|77.2%|Easy||
|1465|Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts||32.5%|Medium||
@ -1655,7 +1655,7 @@
|1515|Best Position for a Service Centre||37.1%|Hard||
|1516|Move Sub-Tree of N-Ary Tree||63.1%|Hard||
|1517|Find Users With Valid E-Mails||71.9%|Easy||
|1518|Water Bottles||60.7%|Easy||
|1518|Water Bottles||60.6%|Easy||
|1519|Number of Nodes in the Sub-Tree With the Same Label||37.0%|Medium||
|1520|Maximum Number of Non-Overlapping Substrings||36.2%|Hard||
|1521|Find a Value of a Mysterious Function Closest to Target||44.3%|Hard||
@ -1678,10 +1678,10 @@
|1538|Guess the Majority in a Hidden Array||61.6%|Medium||
|1539|Kth Missing Positive Number|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1539.Kth-Missing-Positive-Number)|55.1%|Easy||
|1540|Can Convert String in K Moves||30.7%|Medium||
|1541|Minimum Insertions to Balance a Parentheses String||42.6%|Medium||
|1541|Minimum Insertions to Balance a Parentheses String||42.7%|Medium||
|1542|Find Longest Awesome Substring||36.6%|Hard||
|1543|Fix Product Name Format||67.5%|Easy||
|1544|Make The String Great||55.3%|Easy||
|1544|Make The String Great||55.2%|Easy||
|1545|Find Kth Bit in Nth Binary String||57.5%|Medium||
|1546|Maximum Number of Non-Overlapping Subarrays With Sum Equals Target||43.8%|Medium||
|1547|Minimum Cost to Cut a Stick||52.4%|Hard||
@ -1702,26 +1702,26 @@
|1562|Find Latest Group of Size M||39.6%|Medium||
|1563|Stone Game V||40.1%|Hard||
|1564|Put Boxes Into the Warehouse I||66.0%|Medium||
|1565|Unique Orders and Customers Per Month||82.9%|Easy||
|1566|Detect Pattern of Length M Repeated K or More Times||42.4%|Easy||
|1565|Unique Orders and Customers Per Month||82.8%|Easy||
|1566|Detect Pattern of Length M Repeated K or More Times||42.5%|Easy||
|1567|Maximum Length of Subarray With Positive Product||36.7%|Medium||
|1568|Minimum Number of Days to Disconnect Island||50.3%|Hard||
|1569|Number of Ways to Reorder Array to Get Same BST||50.2%|Hard||
|1569|Number of Ways to Reorder Array to Get Same BST||50.1%|Hard||
|1570|Dot Product of Two Sparse Vectors||91.2%|Medium||
|1571|Warehouse Manager||90.1%|Easy||
|1572|Matrix Diagonal Sum||78.4%|Easy||
|1572|Matrix Diagonal Sum||78.3%|Easy||
|1573|Number of Ways to Split a String|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1573.Number-of-Ways-to-Split-a-String)|31.0%|Medium||
|1574|Shortest Subarray to be Removed to Make Array Sorted||33.3%|Medium||
|1574|Shortest Subarray to be Removed to Make Array Sorted||33.2%|Medium||
|1575|Count All Possible Routes||57.4%|Hard||
|1576|Replace All ?'s to Avoid Consecutive Repeating Characters||48.3%|Easy||
|1577|Number of Ways Where Square of Number Is Equal to Product of Two Numbers||37.4%|Medium||
|1578|Minimum Deletion Cost to Avoid Repeating Letters||60.5%|Medium||
|1579|Remove Max Number of Edges to Keep Graph Fully Traversable||46.2%|Hard||
|1580|Put Boxes Into the Warehouse II||62.1%|Medium||
|1580|Put Boxes Into the Warehouse II||62.0%|Medium||
|1581|Customer Who Visited but Did Not Make Any Transactions||90.2%|Easy||
|1582|Special Positions in a Binary Matrix||64.3%|Easy||
|1583|Count Unhappy Friends||54.2%|Medium||
|1584|Min Cost to Connect All Points||51.3%|Medium||
|1584|Min Cost to Connect All Points||51.4%|Medium||
|1585|Check If String Is Transformable With Substring Sort Operations||48.2%|Hard||
|1586|Binary Search Tree Iterator II||66.6%|Medium||
|1587|Bank Account Summary II||90.2%|Easy||
@ -1743,7 +1743,7 @@
|1603|Design Parking System||86.6%|Easy||
|1604|Alert Using Same Key-Card Three or More Times in a One Hour Period||42.3%|Medium||
|1605|Find Valid Matrix Given Row and Column Sums||77.2%|Medium||
|1606|Find Servers That Handled Most Number of Requests||36.9%|Hard||
|1606|Find Servers That Handled Most Number of Requests||37.0%|Hard||
|1607|Sellers With No Sales||55.6%|Easy||
|1608|Special Array With X Elements Greater Than or Equal X||61.7%|Easy||
|1609|Even Odd Tree||53.1%|Medium||
@ -1760,7 +1760,7 @@
|1620|Coordinate With Maximum Network Quality||37.1%|Medium||
|1621|Number of Sets of K Non-Overlapping Line Segments||41.1%|Medium||
|1622|Fancy Sequence||15.4%|Hard||
|1623|All Valid Triplets That Can Represent a Country||88.9%|Easy||
|1623|All Valid Triplets That Can Represent a Country||89.0%|Easy||
|1624|Largest Substring Between Two Equal Characters||59.0%|Easy||
|1625|Lexicographically Smallest String After Applying Operations||63.7%|Medium||
|1626|Best Team With No Conflicts||37.7%|Medium||
@ -1802,7 +1802,7 @@
|1662|Check If Two String Arrays are Equivalent|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1662.Check-If-Two-String-Arrays-are-Equivalent)|83.4%|Easy||
|1663|Smallest String With A Given Numeric Value|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1663.Smallest-String-With-A-Given-Numeric-Value)|64.3%|Medium||
|1664|Ways to Make a Fair Array|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1664.Ways-to-Make-a-Fair-Array)|60.6%|Medium||
|1665|Minimum Initial Energy to Finish Tasks|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1665.Minimum-Initial-Energy-to-Finish-Tasks)|66.6%|Hard||
|1665|Minimum Initial Energy to Finish Tasks|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1665.Minimum-Initial-Energy-to-Finish-Tasks)|66.7%|Hard||
|1666|Change the Root of a Binary Tree||69.4%|Medium||
|1667|Fix Names in a Table||63.6%|Easy||
|1668|Maximum Repeating Substring|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1668.Maximum-Repeating-Substring)|38.6%|Easy||
@ -1818,8 +1818,8 @@
|1678|Goal Parser Interpretation|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1678.Goal-Parser-Interpretation)|85.9%|Easy||
|1679|Max Number of K-Sum Pairs|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1679.Max-Number-of-K-Sum-Pairs)|54.2%|Medium||
|1680|Concatenation of Consecutive Binary Numbers|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1680.Concatenation-of-Consecutive-Binary-Numbers)|52.4%|Medium||
|1681|Minimum Incompatibility|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1681.Minimum-Incompatibility)|35.3%|Hard||
|1682|Longest Palindromic Subsequence II||51.5%|Medium||
|1681|Minimum Incompatibility|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1681.Minimum-Incompatibility)|35.4%|Hard||
|1682|Longest Palindromic Subsequence II||51.4%|Medium||
|1683|Invalid Tweets||91.1%|Easy||
|1684|Count the Number of Consistent Strings|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1684.Count-the-Number-of-Consistent-Strings)|83.5%|Easy||
|1685|Sum of Absolute Differences in a Sorted Array|[Go](https://github.com/halfrost/LeetCode-Go/tree/master/leetcode/1685.Sum-of-Absolute-Differences-in-a-Sorted-Array)|61.8%|Medium||
@ -1837,7 +1837,7 @@
|1697|Checking Existence of Edge Length Limited Paths||55.9%|Hard||
|1698|Number of Distinct Substrings in a String||56.4%|Medium||
|1699|Number of Calls Between Two Persons||86.5%|Medium||
|1700|Number of Students Unable to Eat Lunch||69.5%|Easy||
|1700|Number of Students Unable to Eat Lunch||69.4%|Easy||
|1701|Average Waiting Time||61.4%|Medium||
|1702|Maximum Binary String After Change||60.5%|Medium||
|1703|Minimum Adjacent Swaps for K Consecutive Ones||40.2%|Hard||
@ -1850,8 +1850,8 @@
|1710|Maximum Units on a Truck||70.7%|Easy||
|1711|Count Good Meals||26.0%|Medium||
|1712|Ways to Split Array Into Three Subarrays||29.8%|Medium||
|1713|Minimum Operations to Make a Subsequence||45.6%|Hard||
|1714|Sum Of Special Evenly-Spaced Elements In Array||48.2%|Hard||
|1713|Minimum Operations to Make a Subsequence||45.7%|Hard||
|1714|Sum Of Special Evenly-Spaced Elements In Array||47.9%|Hard||
|1715|Count Apples and Oranges||79.4%|Medium||
|1716|Calculate Money in Leetcode Bank||67.6%|Easy||
|1717|Maximum Score From Removing Substrings||39.6%|Medium||
@ -1860,14 +1860,14 @@
|1720|Decode XORed Array||85.9%|Easy||
|1721|Swapping Nodes in a Linked List||65.0%|Medium||
|1722|Minimize Hamming Distance After Swap Operations||55.4%|Medium||
|1723|Find Minimum Time to Finish All Jobs||44.3%|Hard||
|1723|Find Minimum Time to Finish All Jobs||44.4%|Hard||
|1724|Checking Existence of Edge Length Limited Paths II||58.5%|Hard||
|1725|Number Of Rectangles That Can Form The Largest Square||77.7%|Easy||
|1726|Tuple with Same Product||55.1%|Medium||
|1727|Largest Submatrix With Rearrangements||58.3%|Medium||
|1728|Cat and Mouse II||40.9%|Hard||
|1729|Find Followers Count||72.2%|Easy||
|1730|Shortest Path to Get Food||59.4%|Medium||
|1729|Find Followers Count||72.1%|Easy||
|1730|Shortest Path to Get Food||59.3%|Medium||
|1731|The Number of Employees Which Report to Each Employee||50.2%|Easy||
|1732|Find the Highest Altitude||82.0%|Easy||
|1733|Minimum Number of People to Teach||36.4%|Medium||
@ -1880,19 +1880,19 @@
|1740|Find Distance in a Binary Tree||70.8%|Medium||
|1741|Find Total Time Spent by Each Employee||91.7%|Easy||
|1742|Maximum Number of Balls in a Box||74.9%|Easy||
|1743|Restore the Array From Adjacent Pairs||61.9%|Medium||
|1743|Restore the Array From Adjacent Pairs||62.0%|Medium||
|1744|Can You Eat Your Favorite Candy on Your Favorite Day?||30.3%|Medium||
|1745|Palindrome Partitioning IV||48.8%|Hard||
|1746|Maximum Subarray Sum After One Operation||64.1%|Medium||
|1747|Leetflex Banned Accounts||69.5%|Medium||
|1748|Sum of Unique Elements||78.0%|Easy||
|1749|Maximum Absolute Sum of Any Subarray||45.5%|Medium||
|1750|Minimum Length of String After Deleting Similar Ends||39.3%|Medium||
|1751|Maximum Number of Events That Can Be Attended II||42.1%|Hard||
|1752|Check if Array Is Sorted and Rotated||48.6%|Easy||
|1753|Maximum Score From Removing Stones||57.5%|Medium||
|1754|Largest Merge Of Two Strings||32.4%|Medium||
|1755|Closest Subsequence Sum||23.9%|Hard||
|1746|Maximum Subarray Sum After One Operation||64.0%|Medium||
|1747|Leetflex Banned Accounts||70.0%|Medium||
|1748|Sum of Unique Elements||78.1%|Easy||
|1749|Maximum Absolute Sum of Any Subarray||45.8%|Medium||
|1750|Minimum Length of String After Deleting Similar Ends||39.6%|Medium||
|1751|Maximum Number of Events That Can Be Attended II||42.6%|Hard||
|1752|Check if Array Is Sorted and Rotated||48.7%|Easy||
|1753|Maximum Score From Removing Stones||57.9%|Medium||
|1754|Largest Merge Of Two Strings||33.0%|Medium||
|1755|Closest Subsequence Sum||24.8%|Hard||
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|
------------------------------------------------------------------

8
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@ -1,10 +1,4 @@
# 643. Maximum Average Subarray I
Added By: halfrost
Created Time: Feb 7, 2021 5:07 PM
Difficulty: Easy
Link: https://leetcode.com/problems/maximum-average-subarray-i/
Tags: Array
# [643. Maximum Average Subarray I](https://leetcode.com/problems/maximum-average-subarray-i/)
## 题目

37
leetcode/0821.Shortest-Distance-to-a-Character/821. Shortest Distance to a Character.go Normal file
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@ -0,0 +1,37 @@
package leetcode
import (
"math"
)
func shortestToChar(s string, c byte) []int {
res := make([]int, len(s))
for i := 0; i < len(s); i++ {
if s[i] == c {
res[i] = 0
} else {
left, right := math.MaxInt32, math.MaxInt32
for j := i + 1; j < len(s); j++ {
if s[j] == c {
right = j - i
break
}
}
for k := i - 1; k >= 0; k-- {
if s[k] == c {
left = i - k
break
}
}
res[i] = min(left, right)
}
}
return res
}
func min(a, b int) int {
if a > b {
return b
}
return a
}

48
leetcode/0821.Shortest-Distance-to-a-Character/821. Shortest Distance to a Character_test.go Normal file
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@ -0,0 +1,48 @@
package leetcode
import (
"fmt"
"testing"
)
type question821 struct {
para821
ans821
}
// para 是参数
// one 代表第一个参数
type para821 struct {
s string
c byte
}
// ans 是答案
// one 代表第一个答案
type ans821 struct {
one []int
}
func Test_Problem821(t *testing.T) {
qs := []question821{
{
para821{"loveleetcode", 'e'},
ans821{[]int{3, 2, 1, 0, 1, 0, 0, 1, 2, 2, 1, 0}},
},
{
para821{"baaa", 'b'},
ans821{[]int{0, 1, 2, 3}},
},
}
fmt.Printf("------------------------Leetcode Problem 821------------------------\n")
for _, q := range qs {
_, p := q.ans821, q.para821
fmt.Printf("【input】:%v 【output】:%v\n", p, shortestToChar(p.s, p.c))
}
fmt.Printf("\n\n\n")
}

76
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@ -0,0 +1,76 @@
# [821. Shortest Distance to a Character](https://leetcode.com/problems/shortest-distance-to-a-character/)
## 题目
Given a string `s` and a character `c` that occurs in `s`, return *an array of integers `answer` where* `answer.length == s.length` *and* `answer[i]` *is the shortest distance from* `s[i]` *to the character* `c` *in* `s`.
**Example 1:**
```
Input: s = "loveleetcode", c = "e"
Output: [3,2,1,0,1,0,0,1,2,2,1,0]
```
**Example 2:**
```
Input: s = "aaab", c = "b"
Output: [3,2,1,0]
```
**Constraints:**
- `1 <= s.length <= 104`
- `s[i]` and `c` are lowercase English letters.
- `c` occurs at least once in `s`.
## 题目大意
给定一个字符串 S 和一个字符 C。返回一个代表字符串 S 中每个字符到字符串 S 中的字符 C 的最短距离的数组。
## 解题思路
- 简单题。依次扫描字符串 S，针对每一个非字符 C 的字符，分别往左扫一次，往右扫一次，计算出距离目标字符 C 的距离，然后取左右两个距离的最小值存入最终答案数组中。
## 代码
```go
package leetcode
import (
"math"
)
func shortestToChar(s string, c byte) []int {
res := make([]int, len(s))
for i := 0; i < len(s); i++ {
if s[i] == c {
res[i] = 0
} else {
left, right := math.MaxInt32, math.MaxInt32
for j := i + 1; j < len(s); j++ {
if s[j] == c {
right = j - i
break
}
}
for k := i - 1; k >= 0; k-- {
if s[k] == c {
left = i - k
break
}
}
res[i] = min(left, right)
}
}
return res
}
func min(a, b int) int {
if a > b {
return b
}
return a
}
```

8
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@ -1,10 +1,4 @@
# 643. Maximum Average Subarray I
Added By: halfrost
Created Time: Feb 7, 2021 5:07 PM
Difficulty: Easy
Link: https://leetcode.com/problems/maximum-average-subarray-i/
Tags: Array
# [643. Maximum Average Subarray I](https://leetcode.com/problems/maximum-average-subarray-i/)
## 题目

2
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@ -92,5 +92,5 @@ func mostCommonWord(paragraph string, banned []string) string {
----------------------------------------------
<div style="display: flex;justify-content: space-between;align-items: center;">
<p><a href="https://books.halfrost.com/leetcode/ChapterFour/0800~0899/0817.Linked-List-Components/">⬅️上一页</a></p>
<p><a href="https://books.halfrost.com/leetcode/ChapterFour/0800~0899/0826.Most-Profit-Assigning-Work/">下一页➡️</a></p>
<p><a href="https://books.halfrost.com/leetcode/ChapterFour/0800~0899/0821.Shortest-Distance-to-a-Character/">下一页➡️</a></p>
</div>

83
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@ -0,0 +1,83 @@
# [821. Shortest Distance to a Character](https://leetcode.com/problems/shortest-distance-to-a-character/)
## 题目
Given a string `s` and a character `c` that occurs in `s`, return *an array of integers `answer` where* `answer.length == s.length` *and* `answer[i]` *is the shortest distance from* `s[i]` *to the character* `c` *in* `s`.
**Example 1:**
```
Input: s = "loveleetcode", c = "e"
Output: [3,2,1,0,1,0,0,1,2,2,1,0]
```
**Example 2:**
```
Input: s = "aaab", c = "b"
Output: [3,2,1,0]
```
**Constraints:**
- `1 <= s.length <= 104`
- `s[i]` and `c` are lowercase English letters.
- `c` occurs at least once in `s`.
## 题目大意
给定一个字符串 S 和一个字符 C。返回一个代表字符串 S 中每个字符到字符串 S 中的字符 C 的最短距离的数组。
## 解题思路
- 简单题。依次扫描字符串 S，针对每一个非字符 C 的字符，分别往左扫一次，往右扫一次，计算出距离目标字符 C 的距离，然后取左右两个距离的最小值存入最终答案数组中。
## 代码
```go
package leetcode
import (
"math"
)
func shortestToChar(s string, c byte) []int {
res := make([]int, len(s))
for i := 0; i < len(s); i++ {
if s[i] == c {
res[i] = 0
} else {
left, right := math.MaxInt32, math.MaxInt32
for j := i + 1; j < len(s); j++ {
if s[j] == c {
right = j - i
break
}
}
for k := i - 1; k >= 0; k-- {
if s[k] == c {
left = i - k
break
}
}
res[i] = min(left, right)
}
}
return res
}
func min(a, b int) int {
if a > b {
return b
}
return a
}
```
----------------------------------------------
<div style="display: flex;justify-content: space-between;align-items: center;">
<p><a href="https://books.halfrost.com/leetcode/ChapterFour/0800~0899/0819.Most-Common-Word/">⬅️上一页</a></p>
<p><a href="https://books.halfrost.com/leetcode/ChapterFour/0800~0899/0826.Most-Profit-Assigning-Work/">下一页➡️</a></p>
</div>

2
website/content/ChapterFour/0800~0899/0826.Most-Profit-Assigning-Work.md
View File

@ -109,6 +109,6 @@ func maxProfitAssignment(difficulty []int, profit []int, worker []int) int {
----------------------------------------------
<div style="display: flex;justify-content: space-between;align-items: center;">
<p><a href="https://books.halfrost.com/leetcode/ChapterFour/0800~0899/0819.Most-Common-Word/">⬅️上一页</a></p>
<p><a href="https://books.halfrost.com/leetcode/ChapterFour/0800~0899/0821.Shortest-Distance-to-a-Character/">⬅️上一页</a></p>
<p><a href="https://books.halfrost.com/leetcode/ChapterFour/0800~0899/0828.Count-Unique-Characters-of-All-Substrings-of-a-Given-String/">下一页➡️</a></p>
</div>

2
website/content/ChapterTwo/Array.md
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@ -91,7 +91,7 @@ weight: 1
|0729|My Calendar I|[Go]({{< relref "/ChapterFour/0700~0799/0729.My-Calendar-I.md" >}})|Medium||||53.2%|
|0746|Min Cost Climbing Stairs|[Go]({{< relref "/ChapterFour/0700~0799/0746.Min-Cost-Climbing-Stairs.md" >}})|Easy| O(n)| O(1)||50.9%|
|0766|Toeplitz Matrix|[Go]({{< relref "/ChapterFour/0700~0799/0766.Toeplitz-Matrix.md" >}})|Easy| O(n)| O(1)||65.8%|
|0830|Positions of Large Groups|[Go]({{< relref "/ChapterFour/0800~0899/0830.Positions-of-Large-Groups.md" >}})|Easy||||50.3%|
|0830|Positions of Large Groups|[Go]({{< relref "/ChapterFour/0800~0899/0830.Positions-of-Large-Groups.md" >}})|Easy||||50.4%|
|0832|Flipping an Image|[Go]({{< relref "/ChapterFour/0800~0899/0832.Flipping-an-Image.md" >}})|Easy||||78.1%|
|0867|Transpose Matrix|[Go]({{< relref "/ChapterFour/0800~0899/0867.Transpose-Matrix.md" >}})|Easy| O(n)| O(1)||62.1%|
|0888|Fair Candy Swap|[Go]({{< relref "/ChapterFour/0800~0899/0888.Fair-Candy-Swap.md" >}})|Easy||||58.9%|

2
website/content/ChapterTwo/Backtracking.md
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@ -133,7 +133,7 @@ func updateMatrix_BFS(matrix [][]int) [][]int {
|1641|Count Sorted Vowel Strings|[Go]({{< relref "/ChapterFour/1600~1699/1641.Count-Sorted-Vowel-Strings.md" >}})|Medium||||77.0%|
|1655|Distribute Repeating Integers|[Go]({{< relref "/ChapterFour/1600~1699/1655.Distribute-Repeating-Integers.md" >}})|Hard||||40.5%|
|1659|Maximize Grid Happiness|[Go]({{< relref "/ChapterFour/1600~1699/1659.Maximize-Grid-Happiness.md" >}})|Hard||||35.5%|
|1681|Minimum Incompatibility|[Go]({{< relref "/ChapterFour/1600~1699/1681.Minimum-Incompatibility.md" >}})|Hard||||35.3%|
|1681|Minimum Incompatibility|[Go]({{< relref "/ChapterFour/1600~1699/1681.Minimum-Incompatibility.md" >}})|Hard||||35.4%|
|1688|Count of Matches in Tournament|[Go]({{< relref "/ChapterFour/1600~1699/1688.Count-of-Matches-in-Tournament.md" >}})|Easy||||82.7%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

2
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@ -10,7 +10,7 @@ weight: 10
| No. | Title | Solution | Difficulty | TimeComplexity | SpaceComplexity |Favorite| Acceptance |
|:--------:|:------- | :--------: | :----------: | :----: | :-----: | :-----: |:-----: |
|0101|Symmetric Tree|[Go]({{< relref "/ChapterFour/0100~0199/0101.Symmetric-Tree.md" >}})|Easy| O(n)| O(1)||48.0%|
|0102|Binary Tree Level Order Traversal|[Go]({{< relref "/ChapterFour/0100~0199/0102.Binary-Tree-Level-Order-Traversal.md" >}})|Medium| O(n)| O(1)||56.4%|
|0102|Binary Tree Level Order Traversal|[Go]({{< relref "/ChapterFour/0100~0199/0102.Binary-Tree-Level-Order-Traversal.md" >}})|Medium| O(n)| O(1)||56.5%|
|0103|Binary Tree Zigzag Level Order Traversal|[Go]({{< relref "/ChapterFour/0100~0199/0103.Binary-Tree-Zigzag-Level-Order-Traversal.md" >}})|Medium| O(n)| O(n)||50.0%|
|0107|Binary Tree Level Order Traversal II|[Go]({{< relref "/ChapterFour/0100~0199/0107.Binary-Tree-Level-Order-Traversal-II.md" >}})|Easy| O(n)| O(1)||55.1%|
|0111|Minimum Depth of Binary Tree|[Go]({{< relref "/ChapterFour/0100~0199/0111.Minimum-Depth-of-Binary-Tree.md" >}})|Easy| O(n)| O(1)||39.4%|

2
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@ -43,7 +43,7 @@ weight: 18
|0327|Count of Range Sum|[Go]({{< relref "/ChapterFour/0300~0399/0327.Count-of-Range-Sum.md" >}})|Hard| O(n log n)| O(n)|❤️|36.0%|
|0493|Reverse Pairs|[Go]({{< relref "/ChapterFour/0400~0499/0493.Reverse-Pairs.md" >}})|Hard| O(n log n)| O(n)||26.7%|
|0699|Falling Squares|[Go]({{< relref "/ChapterFour/0600~0699/0699.Falling-Squares.md" >}})|Hard| O(n log n)| O(n)|❤️|42.5%|
|0715|Range Module|[Go]({{< relref "/ChapterFour/0700~0799/0715.Range-Module.md" >}})|Hard| O(log n)| O(n)|❤️|40.2%|
|0715|Range Module|[Go]({{< relref "/ChapterFour/0700~0799/0715.Range-Module.md" >}})|Hard| O(log n)| O(n)|❤️|40.1%|
|0732|My Calendar III|[Go]({{< relref "/ChapterFour/0700~0799/0732.My-Calendar-III.md" >}})|Hard| O(log n)| O(n)|❤️|61.6%|
|0850|Rectangle Area II|[Go]({{< relref "/ChapterFour/0800~0899/0850.Rectangle-Area-II.md" >}})|Hard| O(n log n)| O(n)|❤️|48.3%|
|1157|Online Majority Element In Subarray|[Go]({{< relref "/ChapterFour/1100~1199/1157.Online-Majority-Element-In-Subarray.md" >}})|Hard| O(log n)| O(n)|❤️|39.6%|

4
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@ -29,7 +29,7 @@ weight: 5
|0155|Min Stack|[Go]({{< relref "/ChapterFour/0100~0199/0155.Min-Stack.md" >}})|Easy| O(n)| O(n)||46.2%|
|0173|Binary Search Tree Iterator|[Go]({{< relref "/ChapterFour/0100~0199/0173.Binary-Search-Tree-Iterator.md" >}})|Medium| O(n)| O(1)||59.9%|
|0224|Basic Calculator|[Go]({{< relref "/ChapterFour/0200~0299/0224.Basic-Calculator.md" >}})|Hard| O(n)| O(n)||38.1%|
|0225|Implement Stack using Queues|[Go]({{< relref "/ChapterFour/0200~0299/0225.Implement-Stack-using-Queues.md" >}})|Easy| O(n)| O(n)||47.1%|
|0225|Implement Stack using Queues|[Go]({{< relref "/ChapterFour/0200~0299/0225.Implement-Stack-using-Queues.md" >}})|Easy| O(n)| O(n)||47.2%|
|0232|Implement Queue using Stacks|[Go]({{< relref "/ChapterFour/0200~0299/0232.Implement-Queue-using-Stacks.md" >}})|Easy| O(n)| O(n)||51.9%|
|0331|Verify Preorder Serialization of a Binary Tree|[Go]({{< relref "/ChapterFour/0300~0399/0331.Verify-Preorder-Serialization-of-a-Binary-Tree.md" >}})|Medium| O(n)| O(1)||40.9%|
|0385|Mini Parser|[Go]({{< relref "/ChapterFour/0300~0399/0385.Mini-Parser.md" >}})|Medium||||34.5%|
@ -53,7 +53,7 @@ weight: 5
|0946|Validate Stack Sequences|[Go]({{< relref "/ChapterFour/0900~0999/0946.Validate-Stack-Sequences.md" >}})|Medium| O(n)| O(n)||63.6%|
|1003|Check If Word Is Valid After Substitutions|[Go]({{< relref "/ChapterFour/1000~1099/1003.Check-If-Word-Is-Valid-After-Substitutions.md" >}})|Medium| O(n)| O(1)||56.3%|
|1019|Next Greater Node In Linked List|[Go]({{< relref "/ChapterFour/1000~1099/1019.Next-Greater-Node-In-Linked-List.md" >}})|Medium| O(n)| O(1)||58.2%|
|1021|Remove Outermost Parentheses|[Go]({{< relref "/ChapterFour/1000~1099/1021.Remove-Outermost-Parentheses.md" >}})|Easy| O(n)| O(1)||78.8%|
|1021|Remove Outermost Parentheses|[Go]({{< relref "/ChapterFour/1000~1099/1021.Remove-Outermost-Parentheses.md" >}})|Easy| O(n)| O(1)||78.9%|
|1047|Remove All Adjacent Duplicates In String|[Go]({{< relref "/ChapterFour/1000~1099/1047.Remove-All-Adjacent-Duplicates-In-String.md" >}})|Easy| O(n)| O(1)||70.5%|
|1673|Find the Most Competitive Subsequence|[Go]({{< relref "/ChapterFour/1600~1699/1673.Find-the-Most-Competitive-Subsequence.md" >}})|Medium||||45.2%|
|------------|-------------------------------------------------------|-------| ----------------| ---------------|-------------|-------------|-------------|

2
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@ -16,7 +16,7 @@ weight: 6
|0099|Recover Binary Search Tree|[Go]({{< relref "/ChapterFour/0001~0099/0099.Recover-Binary-Search-Tree.md" >}})|Hard| O(n)| O(1)||42.3%|
|0100|Same Tree|[Go]({{< relref "/ChapterFour/0100~0199/0100.Same-Tree.md" >}})|Easy| O(n)| O(1)||54.1%|
|0101|Symmetric Tree|[Go]({{< relref "/ChapterFour/0100~0199/0101.Symmetric-Tree.md" >}})|Easy| O(n)| O(1)||48.0%|
|0102|Binary Tree Level Order Traversal|[Go]({{< relref "/ChapterFour/0100~0199/0102.Binary-Tree-Level-Order-Traversal.md" >}})|Medium| O(n)| O(1)||56.4%|
|0102|Binary Tree Level Order Traversal|[Go]({{< relref "/ChapterFour/0100~0199/0102.Binary-Tree-Level-Order-Traversal.md" >}})|Medium| O(n)| O(1)||56.5%|
|0103|Binary Tree Zigzag Level Order Traversal|[Go]({{< relref "/ChapterFour/0100~0199/0103.Binary-Tree-Zigzag-Level-Order-Traversal.md" >}})|Medium| O(n)| O(n)||50.0%|
|0104|Maximum Depth of Binary Tree|[Go]({{< relref "/ChapterFour/0100~0199/0104.Maximum-Depth-of-Binary-Tree.md" >}})|Easy| O(n)| O(1)||67.9%|
|0105|Construct Binary Tree from Preorder and Inorder Traversal|[Go]({{< relref "/ChapterFour/0100~0199/0105.Construct-Binary-Tree-from-Preorder-and-Inorder-Traversal.md" >}})|Medium||||51.5%|