return its level order traversal as: [ [3], [9,20], [15,7] ] SOLUTION 1: 使用队列来解决,很直观。注意在每次换层的时候,新建一个List. 1/**2* Definition for binary tree3* public class TreeNode {4* int val;5* TreeNode left;6* TreeNode right;7* TreeNode(int x) { val = x; ...
Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level). For example: Given binary tree [3,9,20,null,null,15,7], 代码语言:javascript 代码运行次数:0 运行 AI代码解释 3/\920/\157 return its level order traversal as: 代码...
原题链接在此:https://leetcode.com/problems/binary-tree-level-order-traversal/ Given therootof a binary tree, returnthe level order traversal of its nodes' values. (i.e., from left to right, level by level). 给你一个二叉树,请你返回其按 层序遍历 得到的节点值。 (即逐层地,从左到右访...
Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level). 给出一棵二叉树,返回其节点值的层次遍历(逐层从左往右访问) 【题目链接】 www.lintcode.com/en/problem/binary-tree-level-order-traversal/ 【题目解析】 对于二叉树的问题,我们...
题目描述英文版描述Given the root of a binary tree, return the level order traversal of its nodes' values. (i.e., from left to right, level by level). Example 1: Input: root = [3,9,20,null,null,1…
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 ivec; 35 Swap(ivec); 36 } 37 tree_vector.push_...
Binary Tree Level Order Traversal(二叉树的层次遍历) HoneyMoose iSharkFly - 鲨鱼君 来自专栏 · Java 描述给出一棵二叉树,返回其节点值的层次遍历(逐层从左往右访问)样例给一棵二叉树 {3,9,20,#,#,15,7}:3 / \ 9 20 / \ 15 7返回他的分层遍历结果:[ [3], [9,20], [15,7] ]挑战挑战1...
*/classSolution{public:vector<vector<int>>levelOrder(TreeNode*root){vector<vector<int>>result;queue<TreeNode*>current,next;vector<int>level;if(NULL==root)returnresult;current.push(root);while(current.size()>0){while(current.size()>0){TreeNode*p=current.front();current.pop();level.push_ba...
【题目描述】 Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level). 给出一棵二叉树,返回其节点值的层次遍历(逐层从左往右访问) 【题目链接】 www.lintcode.com/en/problem/binary-tree-level-order-traversal/ ...
描述: Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level). For example:Given binary tree{3,9,20,#,#,15,7}, return its level order trav...