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fix: 修复 47 全排列 的拼写错误 typo
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qq240814476 committed Nov 13, 2021
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Expand Up @@ -38,7 +38,7 @@

那么排列问题其实也是一样的套路。

**还要强调的是去重一定要对元素经行排序,这样我们才方便通过相邻的节点来判断是否重复使用了**
**还要强调的是去重一定要对元素进行排序,这样我们才方便通过相邻的节点来判断是否重复使用了**

我以示例中的 [1,1,2]为例 (为了方便举例,已经排序)抽象为一棵树,去重过程如图:

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