LeetCode 0102. Binary Tree Level Order Traversal二叉树的层次遍历【Medium】【Python】【BFS】 Problem LeetCode 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,null,null,15,7], 3 ...
题目地址:https://leetcode.com/problems/n-ary-tree-preorder-traversal/description/ 题目描述 Given an n-ary tree, return the level order traversal of its nodes’ values. (ie, from left to right, level by level). For example, given a3-arytree: We should return its level order traversal: ...
[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
Python 代码 fromcollectionsimportdeque# 定义二叉树节点classTreeNode:def__init__(self,val=0,left=None,right=None):self.val=valself.left=leftself.right=rightdeflevelOrder(root):# 如果根节点为空,返回空列表ifnotroot:return[]# 初始化队列和结果列表queue=deque([root])result=[]whilequeue:level_siz...
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 / \ 15 7 return its level order traversal as: ...
Level-order: 3 5 6 1 8 10 9 1 代码: void Level_order ( Tree BT,void (*visit)(Tree ThisNode)) { if(BT == NULL)return; struct TreeNode *queue[100]; int head,tail; head = tail = 0; queue[tail++] = BT; while(head!=tail) { (*visit)(queue[head]); if(queue[head]->Lef...
C++ implementation of level order traversal#include <bits/stdc++.h> using namespace std; class tree{ // tree node is defined public: int data; tree *left; tree *right; }; void levelorder( tree *root){ queue<tree*> q; // using stl tree* temp; q.push(root); while(!q.empty())...
Python danieldotwav/Average-of-Levels-in-Binary-Tree Star3 Code Issues Pull requests A C++ program that efficiently calculates the average values of nodes at each level in a binary tree, employing a level-order traversal approach for accurate and fast computation. ...
Given an n-ary tree,returnthe level order traversalofits nodes' values.(ie,from left to right,level by level).For example,given a3-ary tree: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 We shouldreturnits level order traversal:[[1],[3,2,4],[5,6]]Note:The depthofthe tree is...
102 二叉树层序遍历Binary Tree Level Order Traversal @ Python 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). 给定二叉树的根,返回其节点值的层序遍历。 (即,从左到右,逐级)。 Exampl......