Binary Tree Level Order Traversal 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 it...
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…
Given a binary tree, return thelevel ordertraversal of its nodes' values. (ie, from left to right, level by level). For example: Given binary tree{3,9,20,#,#,15,7}, 3 / \ 9 20 / \ 15 7 return its level order traversal as: [ [3], [9,20], [15,7] ] ++++++++++++...
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 binary tree [3,9,20,null,null,15,7], 3 / \ 9 20 / \ 15 7 1. 2. 3. 4. 5. return its level order traversal as: [ [3], [9,20], [15,7] ] 1. 2. 3. 4. 5. 2. 解法 二叉树层次遍历最通用的方法是借助队列。C语言没有提供队列接口,因此我们自己实现一个吧。
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...
这道题目跟上道题目很相似 Leetcode: Binary Tree Level Order Traversal ,唯一不同的就是返回结果是从子叶节点到根节点,所以我们只需要将结果翻转下就好了! 参考代码: /** * Definition for binary tree * struct TreeNode { * int val; * TreeNode *left; ...
Binary Tree Level Order Traversal 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], 3 / \ 9 20
Binary Tree Level Order Traversal II是姊妹题,解题思路都是一样的,只是结果要求的顺序是反的,同样有两种方法,也就是经常说到的DFS深度优先遍历和BFS广度优先遍历。 BFS: 广度优先遍历就是一层层地攻略过去,把每一层的所有节点都记录下来再走向下一层。因为每层会有多个节点,不是简单的一个左节点一个右节点的...
A.1 B.2 C.3 D.4 暂无答案