[leetcode]Binary Tree Level Order Traversal II @ Python
原題地址：http://oj.leetcode.com/problems/binary-tree-level-order-traversal-ii/ 題意： Given a binary tree, return the bottom-up level order traversal ...
原文：[leetcode]Binary Tree Level Order Traversal @ Python
原題地址：http: oj.leetcode.com problems binary tree level order traversal 題意：二叉樹的層序遍歷的實現。 解題思路：二叉樹的層序遍歷可以用bfs或者dfs來實現。這里使用的dfs實現，代碼比較簡潔。實際上，二叉樹的先序遍歷就是dfs實現。 比如一棵樹如下： 二叉樹的先序遍歷為 ， ， ， ， ， ， ，可以看到這個遍歷順序實際上就是 ...
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