本题也属于层次遍历的变形,不同之处在于其遍历的方法是交替进行的,形成一个ZigZag的曲线形式,如下: 代码如下: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 1 struct TreeNode { 2 int val; 3 TreeNode* left; 4 TreeNode* right; 5 TreeNode(int x): val(x), left(N
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...
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...
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...
levelTraversal(root->right, level+1, !leftToRight, result); } }; 2. 迭代解法 // 迭代解法 classSolution{ public: vector<vector<int>> zigzagLevelOrder(TreeNode* root) { vector<vector<int> > result; if(!root)returnresult;
[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
LeetCode 103. Binary Tree Zigzag Level Order Traversal 原题链接在这里:https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal/ 题目: Given a binary tree, return thezigzag level ordertraversal of its nodes' values. (ie, from left to right, then right to left for the next ...
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 ...
Can you solve this real interview question? Longest ZigZag Path in a Binary Tree - You are given the root of a binary tree. A ZigZag path for a binary tree is defined as follow: * Choose any node in the binary tree and a direction (right or left). *
题源:LeetCode 【Binary Tree 系列最终章】 这篇文章汇总了数据结构二叉树 (Binary Tree) 相关问题的多种解法。针对简单题目,讨论的重点倾向于对Python编程知识的活学活用,和思路的发散与实现。 文中第三题,用中序遍历和前序遍历验证二叉搜索树是本篇的重点。