Binary Tree Zigzag Level Order Traversal 之字形层序遍历 LeetCode 199. Binary Tree Right Side View 找每一层的最右结点 LeetCode 515. Find Largest Value in Each Tree Row 计算每一层的最大值 LeetCode 637. Average of Levels in Binary Tree 计算每一层的平均值 对于最短路径问题,还有两道题目也是求...
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 / \ 9 20 / \ 15 7 return its level order traversal as: [ [3], [9,20], [15,7] ] 广度优先搜索...
广度优先搜索(BFS)🌐 简单难度 Maximum Depth of Binary Tree:二叉树的最大深度。 Minimum Depth of Binary Tree:二叉树的最小深度。 Maximum Depth of N-ary Tree:N叉树的最大深度。 中等难度 Binary Tree Level Order Traversal:二叉树的层序遍历。 Binary Tree Zigzag Level Order Traversal:二叉树的Z字形...
3.Maximum Depth of Binary Tree - 求二叉树的深度 DFS 4.Balanced Binary Tree - 判断平衡二叉树 DFS 5.Path Sum - 二叉树路径求和判断DFS 题目概述: Given a binary tree, return thelevel ordertraversal of its nodes' values. (ie, from left to right, level by level). For example: Given binary...
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 ...
for节点 in cur的所有相邻节点: if该节点有效且未被访问过: queue.push(该节点) } level ++; } 上面两个是通用模板,在任何题目中都可以用,是要记住的! 应用一:层序遍历 LeetCode 102. Binary Tree Level Order Traversal 二叉树的层序遍历(Medium) ...
// C++ program to print inorder traversal // using stack. #include<bits/stdc++.h> using namespace std; /* A binary tree Node has data, pointer to left child and a pointer to right child */ struct Node { int data; struct Node* left; struct Node* right; Node (int data) { this...
varinorderTraversal=function(root){varstack=[]functionhelper(root){if(!root)returnroot.left&&helper(root.left)stack.push(root.val)root.right&&helper(root.right)}helper(root)returnstack}; image.png 145: 后序遍历的简单实现 - hard 给定一个二叉树,返回它的 后序 遍历。
给定一个二叉树,返回其按层次遍历的节点值。 (即逐层地,从左到右访问所有节点)。 代码语言:javascript \920/\157返回其层次遍历结果:[[3],9,20],[15 来源:力扣(LeetCode) 链接:https://leetcode-cn.com/problems/binary-tree-level-order-traversal 著作权归领扣网络所有。商业转载请联系官方授权,非商业转...
LeetCode 102. Binary Tree Level Order Traversal二叉树的层序遍历(Medium) 给定一个二叉树,返回其按层序遍历得到的节点值。 层序遍历即逐层地、从左到右访问所有结点。 什么是层序遍历呢?简单来说,层序遍历就是把二叉树分层,然后每一层从左到右遍历: ...