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kama
2025-05-19 17:11:04 +08:00
parent b489cb69b5
commit ce6e658d14
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problems/二叉树的迭代遍历.md Normal file → Executable file
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@@ -38,7 +38,7 @@
动画如下：
![二叉树前序遍历（迭代法）](https://code-thinking.cdn.bcebos.com/gifs/%E4%BA%8C%E5%8F%89%E6%A0%91%E5%89%8D%E5%BA%8F%E9%81%8D%E5%8E%86%EF%BC%88%E8%BF%AD%E4%BB%A3%E6%B3%95%EF%BC%89.gif)
![二叉树前序遍历（迭代法）](https://file1.kamacoder.com/i/algo/%E4%BA%8C%E5%8F%89%E6%A0%91%E5%89%8D%E5%BA%8F%E9%81%8D%E5%8E%86%EF%BC%88%E8%BF%AD%E4%BB%A3%E6%B3%95%EF%BC%89.gif)
不难写出如下代码: （**注意代码中空节点不入栈**）
@@ -85,7 +85,7 @@ public:
动画如下：
![二叉树中序遍历（迭代法）](https://code-thinking.cdn.bcebos.com/gifs/%E4%BA%8C%E5%8F%89%E6%A0%91%E4%B8%AD%E5%BA%8F%E9%81%8D%E5%8E%86%EF%BC%88%E8%BF%AD%E4%BB%A3%E6%B3%95%EF%BC%89.gif)
![二叉树中序遍历（迭代法）](https://file1.kamacoder.com/i/algo/%E4%BA%8C%E5%8F%89%E6%A0%91%E4%B8%AD%E5%BA%8F%E9%81%8D%E5%8E%86%EF%BC%88%E8%BF%AD%E4%BB%A3%E6%B3%95%EF%BC%89.gif)
**中序遍历，可以写出如下代码：**
@@ -117,7 +117,7 @@ public:
再来看后序遍历，先序遍历是中左右，后序遍历是左右中，那么我们只需要调整一下先序遍历的代码顺序，就变成中右左的遍历顺序，然后在反转result数组，输出的结果顺序就是左右中了，如下图：
![前序到后序](https://file.kamacoder.com/pics/20200808200338924.png)
![前序到后序](https://file1.kamacoder.com/i/algo/20200808200338924.png)
**所以后序遍历只需要前序遍历的代码稍作修改就可以了，代码如下：**