题目: Write a function to find the longest common prefix string amongst an array of strings. 思路:求最长前缀子串,假设第一个字符串是最长前缀子串,采用增强for得到数组中每个字符串,分别与第一个字符串的同一位置进行比较,有一个字符串在该位置不一致,就返回. public class Solution { public String longestCommonPrefix(String[] strs) { i…
Write a function to find the longest common prefix string amongst an array of strings. Solution: class Solution { public: string longestCommonPrefix(vector<string>& strs) { //runtime:4ms string str=""; if(strs.empty())return str; ; whi…
Longest Common Prefix Write a function to find the longest common prefix string amongst an array of strings. 解法一: 思路:设置一个位数记录器num,遍历所有字符串的第num位.如果都相同,则num++. 直到某字符串结束或者所有字符串的第num位不都相同,则返回[0~num-1]位,即最长公共前缀. class Solution { public: string longestComm…
[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/problems/all-nodes-distance-k-in-binary-tree/description/ 题目描述: We are given a binary tree (with root no…
[LeetCode]813. Largest Sum of Averages 解题报告(Python) 标签(空格分隔): LeetCode 作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 题目地址:https://leetcode.com/problems/largest-sum-of-averages/description/ 题目描述: We partition a row of numbers A into at most…
[LeetCode]397. Integer Replacement 解题报告(Python) 标签: LeetCode 题目地址:https://leetcode.com/problems/integer-replacement/description/ 题目描述: Given a positive integer n and you can do operations as follow: If n is even, replace n with n/2. If n is odd, you…