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Squash the language code blocks and fix list.md (#865)

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Yudong Jin
2023-10-16 12:06:00 -05:00
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198
docs/chapter_backtracking/permutations_problem.md
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@ -4,7 +4,7 @@
下表列举了几个示例数据，包括输入数组和对应的所有排列。
<p align="center"> 表 <id> &nbsp; 数组与链表的效率对比 </p>
<p align="center"> 表 <id> &nbsp; 全排列示例 </p>
| 输入数组 | 所有排列 |
| :---------- | :----------------------------------------------------------------- |
@ -43,101 +43,9 @@
想清楚以上信息之后，我们就可以在框架代码中做“完形填空”了。为了缩短代码行数，我们不单独实现框架代码中的各个函数，而是将他们展开在 `backtrack()` 函数中。
=== "Python"
```python title="permutations_i.py"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutations_i}
```
=== "C++"
```cpp title="permutations_i.cpp"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutationsI}
```
=== "Java"
```java title="permutations_i.java"
[class]{permutations_i}-[func]{backtrack}
[class]{permutations_i}-[func]{permutationsI}
```
=== "C#"
```csharp title="permutations_i.cs"
[class]{permutations_i}-[func]{Backtrack}
[class]{permutations_i}-[func]{PermutationsI}
```
=== "Go"
```go title="permutations_i.go"
[class]{}-[func]{backtrackI}
[class]{}-[func]{permutationsI}
```
=== "Swift"
```swift title="permutations_i.swift"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutationsI}
```
=== "JS"
```javascript title="permutations_i.js"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutationsI}
```
=== "TS"
```typescript title="permutations_i.ts"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutationsI}
```
=== "Dart"
```dart title="permutations_i.dart"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutationsI}
```
=== "Rust"
```rust title="permutations_i.rs"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutations_i}
```
=== "C"
```c title="permutations_i.c"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutationsI}
```
=== "Zig"
```zig title="permutations_i.zig"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutationsI}
```
```src
[file]{permutations_i}-[class]{}-[func]{permutations_i}
```
## 考虑相等元素的情况
@ -167,101 +75,9 @@
在上一题的代码的基础上，我们考虑在每一轮选择中开启一个哈希表 `duplicated` ，用于记录该轮中已经尝试过的元素，并将重复元素剪枝。
=== "Python"
```python title="permutations_ii.py"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutations_ii}
```
=== "C++"
```cpp title="permutations_ii.cpp"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutationsII}
```
=== "Java"
```java title="permutations_ii.java"
[class]{permutations_ii}-[func]{backtrack}
[class]{permutations_ii}-[func]{permutationsII}
```
=== "C#"
```csharp title="permutations_ii.cs"
[class]{permutations_ii}-[func]{Backtrack}
[class]{permutations_ii}-[func]{PermutationsII}
```
=== "Go"
```go title="permutations_ii.go"
[class]{}-[func]{backtrackII}
[class]{}-[func]{permutationsII}
```
=== "Swift"
```swift title="permutations_ii.swift"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutationsII}
```
=== "JS"
```javascript title="permutations_ii.js"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutationsII}
```
=== "TS"
```typescript title="permutations_ii.ts"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutationsII}
```
=== "Dart"
```dart title="permutations_ii.dart"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutationsII}
```
=== "Rust"
```rust title="permutations_ii.rs"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutations_ii}
```
=== "C"
```c title="permutations_ii.c"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutationsII}
```
=== "Zig"
```zig title="permutations_ii.zig"
[class]{}-[func]{backtrack}
[class]{}-[func]{permutationsII}
```
```src
[file]{permutations_ii}-[class]{}-[func]{permutations_ii}
```
假设元素两两之间互不相同，则 $n$ 个元素共有 $n!$ 种排列（阶乘）；在记录结果时，需要复制长度为 $n$ 的列表，使用 $O(n)$ 时间。**因此时间复杂度为 $O(n!n)$** 。