> For the complete documentation index, see [llms.txt](https://mm.ricky.moe/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mm.ricky.moe/algorithm/algorithm-and-data-structure/pai-xu/basic-knowledge.md).

# 基础知识

## 交换函数

### 位运算符交换

```javascript
const swap = (a, b) => {
    a = a ^ b
    b = a ^ b
    a = a ^ b
} 

```

### 解构交换

```javascript
const swap = (a, b) => {
    [a, b] = [b, a]
}
```