编写一个函数来查找字符串数组中的最长公共前缀. 如果不存在公共前缀,返回空字符串 "". 示例 1: 输入: ["flower","flow","flight"] 输出: "fl" 示例 2: 输入: ["dog","racecar","car"] 输出: "" 解释: 输入不存在公共前缀. 一.解题思路 1) 采用反向思维,将…

编写一个函数来查找字符串数组中最长的公共前缀字符串. 详见:https://leetcode.com/problems/longest-common-prefix/description/ 实现语言:Java class Solution { public String longestCommonPrefix(String[] strs) { if(strs==null||strs.length==0){ return ""; } String res=new String(); fo…

Description The Genographic Project is a research partnership between IBM and The National Geographic Society that is analyzing DNA from hundreds of thousands of contributors to map how the Earth was populated. As an IBM researcher, you have been tas…

编写一个函数来查找字符串数组中的最长公共前缀. 如果不存在公共前缀,返回空字符串 "". 示例 1: 输入: ["flower","flow","flight"] 输出: "fl" 示例 2: 输入: ["dog","racecar","car"] 输出: "" 解释: 输入不存在公共前缀. 说明: 所有输入只包含小写字母 a-…

题目:Write a function to find the longest common prefix string amongst an array of strings. 题解:给出的函数为:char* longestCommonPrefix(char** strs, int strsSize) 其中参数char** strs表示字符串数字,int strsSize表示有多少个字符串 题目的要求就是在这strsSize个字符串中找出最长的公共前缀,例如strsSize=3,字符串如下图时…

Write a function to find the longest common prefix string amongst an array of strings. 求很多string的公共前缀,用个两重循环就可以,代码如下: class Solution { public: string longestCommonPrefix(vector<string>& strs) { string prefix; || strs[].size() == ) return "&…

题目描述 编写一个函数来查找字符串数组中的最长公共前缀. 如果不存在公共前缀,返回空字符串 "". 示例 1: 输入: ["flower","flow","flight"]输出: "fl" 示例 2: 输入: ["dog","racecar","car"]输出: ""解释: 输入不存在公共前缀. 说明: 所有输入只包含小写字母 …

hdoj1423 题目分析: 两个数组a[n1] , b[n2], 求最长上升公共子序列. 我们可用一维存储 f[i] 表示 b 数组以 j 结尾, 与 a[] 数组构成的最长公共上升子序列. 对数组 d 的任意 j 位, 都枚举 a[1 ~n1]. 当a[i] == b[j] 时 , 在1 ~ j - 1中 找出 b[k] 小于 a[ i ] 并且 d[k] 的值最大. 当 a[ i ] > b [j ] 时, 在0到j-1中,对于小于a[i]的,保存f值的最优解 (保存小于a [ i ] 并…

Longest Common Prefix 问题简介: 编写一个函数来查找字符串数组中最长的公共前缀字符串,如果没有公共前缀,则返回空字符串"" 举例: 1: 输入: [“xwq”,“xwqe”,“xwqr”] 输出: “xwq” 2: 输入: [“zxc”,“asd”,“qwe”] 输出: “” 解法一: 先将字符串数组中索引为0即第一个字符串作为最长前缀,遍历所有字符串,用indexOf()方法比较,当前字符串不包含前缀时就将最长前缀长度减一,直到为0 解法二: 另一种思路是不直接…

Justice String Given two strings A and B, your task is to find a substring of A called justice string, which has the same length as B, and only has at most two characters different from B.   Input The first line of the input contains a single integer…