1 struct TreeNode { 2 int val; 3 TreeNode* left; 4 TreeNode* right; 5 TreeNode(int x): val(x), left(NULL),right(NULL) {} 6 }; 7 8 void Swap(vector<int> &ivec) 9 { 10 int temp = 0; 11 int len = ivec.size(); 12 fo
解法一:递归,递归,在Binary Tree Level Order Traversal - LeetCode的基础上将奇数层(下标从0开始)结果逆序即可。 /** * Definition for a binary tree node. * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x), left(NULL), right(NULL) {} *...
https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal/ 题目大意 按照层次遍历,先从左到右,再从右到左,依次如此遍历二叉树 解题思路 仍然按照从左到右层次遍历,存储上一层的遍历方向,判断若本次应该从右到左,将本层结点遍历结果倒序即可。 C++代码 classSolution{public:vector<vector<int>> z...
vector<vector<int>> zigzagLevelOrder(TreeNode* root) { vector<vector<int> > result; if(!root)returnresult; levelTraversal(root,1,true, result); returnresult; } voidlevelTraversal(TreeNode* root,intlevel,intleftToRight,vector<vector<int> >& result){ if(!root)return; if(result.size() <...
236. 二叉树的最近公共祖先链接: https://leetcode-cn.com/problems/lowest-common-ancestor-of-a-binary-tree/给定一个二叉树, 找到该树中两个指定节点的最近公共祖先。 百度百科中最近公… 代码随想录发表于数据结构与...打开知乎App 在「我的页」右上角打开扫一扫 其他扫码方式:微信 下载知乎App 开通机构号...
[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
package tree; import java.util.ArrayList; import java.util.LinkedList; import java.util.List; /** * Created by pradhang on 7/11/2017. * 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...
LeetCode :: Binary Tree Zigzag Level Order Traversal [tree, BFS],Givenabinarytree,returnthezigzaglevelordertraversalofitsnodes'values.(ie,fromlefttoright,thenrighttoleftforthenextlevelandal...
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:...