push(NULL); 29 int nLevelCount = 1; 30 while (true) { 31 TreeNode *pTemp = tree_queue.front(); 32 tree_queue.pop(); 33 if (pTemp == NULL) { 34 if (nLevelCount%2 == 0) { //if the num of level is odd, swap the ive
Given a binary tree, return thezigzag level ordertraversal of its nodes' values. (ie, from left to right, then right to left for the next level and alternate between). For example: Given binary tree{3,9,20,#,#,15,7}, 3 / \ 9 20 / \ 15 7 return its zigzag level order travers...
Given a binary tree,returnthe zigzag level order traversal of its nodes' values. (ie, from left to right, then right to left for the next level and alternate between).For example: Given binary tree [3,9,20,null,null,15,7],3 /\9 20 /\15 7returnits zigzag level order traversal as...
来自专栏 · LeetCode刷题 题目描述(中等难度) 和102 题 类似,二叉树的层次遍历。只不过这题要求,第 1 层从左到右,第 2 层从右到左,第 3 层从左到右,第 4 层从右到左,交替进行。 思路分析 大家可以先做下 102 题 吧,直接在 102 题的基础上进行修改即可。从左到右和从右到左交替,所以我们只需要...
【LeetCode】二叉树的层次之字形遍历:Binary Tree Zigzag Level Order Traversal,代码先锋网,一个为软件开发程序员提供代码片段和技术文章聚合的网站。
[Leetcode][python]Binary Tree Zigzag Level Order Traversal,题目大意按之字形遍历二叉树(一正一反)解题思路来自:链接解题思路:这道题和上一题层序遍历那道题差不多,区别只是在于奇数层的节点要翻转过来存入数组。代码:代码BFSclassSolution(object):defzigzagLeve
return its zigzag level order traversal as: [ [3], [20,9], [15,7] ] 1. 2. 3. 4. 5. 二叉树的锯齿形层序遍历。 题意是给一个二叉树,对其进行层序遍历,但是在遍历每一层的时候要一次从左开始一次从右开始。 思路和102题的做法 - 层序遍历没两样,唯一需要多一个变量记录到底是从左遍历还是从...
hroc135/leetcode#26 olsen-blue/Arai60#27 103. Binary Tree Zigzag Level Order Traversal 58b6ace olsen-blue reviewed Mar 2, 2025 View reviewed changes 103/step3.cpp vector<TreeNode*> current_level_nodes = {root}; while (!current_level_nodes.empty()) { vector<TreeNode*> next_lev...
Binary Tree Zigzag Level Order Traversal.md Verified 4300b6d colorbox mentioned this pull request Mar 1, 2025 103. Binary Tree Zigzag Level Order Traversal colorbox/leetcode#41 Open Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment ...
103. Binary Tree Zigzag Level Order Traversal Given a binary tree, return the zigzag level order traversal of its nodes' values. (ie, from left to right, then right to left for the next level and alternate between). For example: Given binary tree [3,9,20,null,null,15,7], 代码语言:...