题目来源:429. N-ary Tree Level Order Traversal https://leetcode.com/problems/n-ary-tree-level-order-traversal/ 自我感觉难度/真实难度:hard/easy 队列操作不熟悉 题意: 层序遍历树 分析: 自己的代码: """ # Definition for a Node. class Node(object): def __init__(self, val, children)…

429. N叉树的层序遍历 429. N-ary Tree Level Order Traversal LeetCode429. N-ary Tree Level Order Traversal 题目描述 给定一个 N 叉树,返回其节点值的层序遍历. (即从左到右,逐层遍历). 例如,给定一个 3 叉树: 返回其层序遍历: [ [1], [3,2,4], [5,6] ] 说明: 树的深度不会超过 1000. 树的节点总数不会超过 5000. Java 实现 import java.util.Li…

Given a binary tree, return the bottom-up level order traversal of its nodes' values. (ie, from left to right, level by level from leaf to root). For example:Given binary tree {3,9,20,#,#,15,7}, 3 / \ 9 20 / \ 15 7 return its bottom-up level order tr…

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}, 3 / \ 9 20 / \ 15 7 return its level order traversal as: [ [3], [9,20], [15,7] ] 层序…

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}, 3 / \ 9 20 / \ 15 7 return its level order traversal as: [ [3], [9,20], [15,7] ] 分层…

Binary Tree Level Order Traversal 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). For example:Given binary tree {3,9,20,#,#,15,7}, 3 / \ 9 20 / \ 15 7 return its level order…

Binary Tree Level Order Traversal OJ: https://oj.leetcode.com/problems/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…

LeetCode: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,#,#,15,7}, 3 / \ 9 20 / \ 15 7 return its level ord…

题目: Given a binary tree, return the bottom-up level order traversal of its nodes' values. (ie, from left to right, level by level from leaf to root). For example:Given binary tree {3,9,20,#,#,15,7}, 3 / \ 9 20 / \ 15 7 return its bottom-up level orde…

Binary Tree Level Order Traversal 二叉树的层序遍历 两种方式: 1.用两个queue交替表示每一层的节点 2.用两个node,一个表示当前层的最后一个节点,一个表示下一层的最后一个节点 /** * Definition for a binary tree node. * public class TreeNode { * int val; * TreeNode left; * TreeNode right; * TreeNode(int x) { val = x…