# 力扣212. 单词搜索 II


## 力扣212. Word Search II（单词搜索 II）

给定一个 m×n 二维字符网格 board 和一个单词列表 words，返回所有在网格中出现的单词。

示例 1：

![](../posts/01_学习/87_LeetCode/0212_单词搜索II/img/0212-1-description.png)

```
输入：board = [["o","a","a","n"],["e","t","a","e"],["i","h","k","r"],["i","f","l","v"]], words = ["oath","pea","eat","rain"]
输出：["eat","oath"]
```

提示：
- m == board.length
- n == board[i].length
- 1 <= m, n <= 12
- board[i][j] 是一个小写英文字母
- 1 <= words.length <= 3 * 10^4
- 1 <= words[i].length <= 10
- words[i] 由小写英文字母组成
- words 中的所有字符串互不相同