[LeetCode] Lowest Common Ancestor of a Binary Tree 二叉树的最小共同父节点
Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree.According to the definition of LCA on Wikipedia: “The lowest...
[LeetCode] 637. Average of Levels in Binary Tree 二叉树的层平均值
Given a non-empty binary tree, return the average value of the nodes on each level in the form of an array.Example 1:Input: 3 / \ 9 20 / \ ...
【LeetCode】863. All Nodes Distance K in Binary Tree 解题报告(Python)
【LeetCode】863. All Nodes Distance K in Binary Tree 解题报告(Python)作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/题目地址:https://leetcode.com/prob...
Convert Sorted List to Binary Search Tree [LeetCode]
Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST.Solution: TreeNode *sortedListToBST(L...
Codeforces Round #307 (Div. 2) D. GukiZ and Binary Operations 矩阵快速幂优化dp
D. GukiZ and Binary Operationstime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputWe all know that Gu...
【leetcode】Minimum Depth of Binary Tree
题目简述:Given a binary tree, find its minimum depth.The minimum depth is the number of nodes along the shortest path from the root node down to the neare...
Lowest Common Ancestor of a Binary Search Tree (BST)
Given a binary search tree(BST), find the lowest common ancestor of two given nodes in the BST.Node* LCA(Node* root, Node* p, Node* q){ if (!root |...
Leetcode 102. Binary Tree Level Order Traversal(二叉树的层序遍历)
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...
selenium +python webdriver运行时报错cannot find Chrome binary
今日在公司电脑运行自动化测试脚本,出现cannot find Chrome binary报错百思不得其解,排错后发现应该是电脑以前有配置driver文件路径,driver所在文件路径已变更,现python还是在原路径查找webdriver,解决办法:调用driver时指定driver所在的绝对路径即...
Binary Tree Level Order Traversal java实现
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,...
[LeetCode]题解(python):124-Binary Tree Maximum Path Sum
题目来源:https://leetcode.com/problems/binary-tree-maximum-path-sum/题意分析:给定一棵树,找出一个数值最大的路径,起点可以是任意节点或者叶子。题目思路:我们可以先找路径的最大mr,ml,那么最大值是max(solve(root),solve...
LeetCode OJ 99. Recover Binary Search Tree
Two elements of a binary search tree (BST) are swapped by mistake.Recover the tree without changing its structure.Note:A solution using O(n) space is ...
lintcode 中等题:unique Binary Search Tree 不同的二叉查找树
题目不同的二叉查找树给出 n,问由 1...n 为节点组成的不同的二叉查找树有多少种?样例给出n = 3,有5种不同形态的二叉查找树:1 3 3 2 1 \ / / / \ \ 3 2 1...
543. Diameter of Binary Tree
https://leetcode.com/problems/diameter-of-binary-tree/#/descriptionGiven a binary tree, you need to compute the length of the diameter of the tree. Th...
[bzoj3625][Codeforces 250 E]The Child and Binary Tree(生成函数+多项式运算+FFT)
3625: [Codeforces Round #250]小朋友和二叉树Time Limit: 40 Sec Memory Limit: 256 MBSubmit: 650 Solved: 283[Submit][Status][Discuss]Description我们的小朋友很喜欢计算机科学...
[HDOJ3711]Binary Number(枚举)
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=3711题意:两个数集合,找二进制下位数不同最少的数,如果一样,找集合数最小的。暴力枚举 #include <bits/stdc++.h> using namespace std; const ...
LeetCode算法题-Minimum Depth of Binary Tree(Java实现)
这是悦乐书的第168次更新,第170篇原创01 看题和准备今天介绍的是LeetCode算法题中Easy级别的第27题(顺位题号是111)。给定二叉树,找到它的最小深度。最小深度是沿从根节点到最近的叶节点的最短路径上的节点数。叶子节点是没有子节点的节点。例如:给定二叉树[3,9,20,null,nul...
LeetCode: Binary Tree Maximum Path Sum 解题报告
Binary Tree Maximum Path SumGiven a binary tree, find the maximum path sum.The path may start and end at any node in the tree.For example:Given the be...
[LeetCode] Minimum Depth of Binary Tree 二叉树最小深度
Given a binary tree, find its minimum depth.The minimum depth is the number of nodes along the shortest path from the root node down to the nearest le...
【LeetCode】Minimum Depth of Binary Tree 二叉树的最小深度 java
【LeetCode】Minimum Depth of Binary TreeGiven a binary tree, find its minimum depth.The minimum depth is the number of nodes along the shortest path fro...