Write a function to find the longest common prefix string amongst an array of strings. 题解: 寻找一组字符串的最长公共前缀.  最简单的方法,用一个字符串记录当前最长的公共前缀,然后依次比较.时间复杂度: O(N). class Solution { public: string getPrefix(string a,string b) // 辅助函数用于获取两个字符串的公共前缀 { string ans;…

problem: Write a function to find the longest common prefix string amongst an array of strings. 寻找 0 ~n 个字符串的最长公共前缀 thinking: (1)公共前缀非常好理解.按位匹配就可以 (2)非常easy忘记处理0.1个字符串的情况. code: string prefix(string &str1, string &str2) { string tmp; int i=0; whil…

题目: 给定一系列的字符串,找出这些字符串的最长公共前缀. 解法: 暴力法,依次比较每个字符串的每个字符,碰到第一个不同的就返回之前找到的前缀. 代码: class Solution { public: string longestCommonPrefix(vector<string> &strs) { if(strs.empty()) return ""; ; i < strs[].size(); ++i) //取第一个字符串的每个字符 ; j < s…

所有字符串的公共前缀最长字符串 特点:(1)公共所有字符串前缀 (好像跟没说一样...) (2)在字典树中特点:任意从根节点触发遇见第一个分支为止的字符集合即为目标串 参考问题:https://leetcode.com/problems/longest-common-prefix/description/ Write a function to find the longest common prefix string amongst an array of strings. If there…

Write a function to find the longest common prefix string amongst an array of strings. If there is no common prefix, return an empty string "". Example 1: Input: ["flower","flow","flight"] Output: "fl" Exa…

题目简述: Write a function to find the longest common prefix string amongst an array of strings. 解题思路: class Solution: # @return a string def longestCommonPrefix(self, strs): if strs == []: return '' minl = 99999 for i in strs: if len(i) < minl: minl = l…

Write a function to find the longest common prefix string amongst an array of strings. public class Solution { public String longestCommonPrefix(String[] strs) { if (strs == null || strs.length == 0) { return ""; } else if (strs.length < 2) {…

Write a function to find the longest common prefix string amongst an array of strings. 解题思路: 老实遍历即可,注意边界条件: JAVA实现: static public String longestCommonPrefix(String[] strs) { if (strs.length == 0) return ""; for (int i = 0; i < strs[0].length(…

Write a function to find the longest common prefix string amongst an array of strings. 思路:找最长公共前缀 常规方法 string longestCommonPrefix(vector<string> &strs) { ) return ""; ) ]; string ans; ; ) { ; i < strs.size(); i++) { ].size() <= n…

小二好久没有更新博客了,真是罪过,最近在看linux的东西导致进度耽搁了,所以今晚睡觉前怒刷一题! 问题描述: Write a function to find the longest common prefix string amongst an array of strings. 解题思路: 该问题就是找到所有数组字符串里面的最长相同前字串.所以我的思路是先找到数组中最短的那个字符串,然后每次比较的时候最多循环该长度就行,这样避免字符串下标溢出的问题.设置StringBuilder对象用于存…