14. Longest Common Prefix Easy 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&qu…

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…

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. public class Solution { public String longestCommonPrefix(String[] strs) { if (strs == null || strs.length == 0) { return ""; } else if (strs.length < 2) {…

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…

题目:Write a function to find the longest common prefix string amongst an array of strings. 很简单的一个描述,最长公共前缀,首先想到的是用递归,既然是找公共前缀,那肯定要两个进行比较,所以把第一个和除了第一个之外的字符串数组看作两个进行比较,再对后面的进行递归就好了,上代码. public static String longestCommonPrefix(String[] strs) { if (strs.…

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…

Write a function to find the longest common prefix string amongst an array of strings. 解法: 广度优先搜索:先比较所有字符串的第一个字符,然后比较第二个....如果某一行没有了(说明其为最短的单词)或者遇到不匹配字符,则返回当前匹配到的最长前缀. public class Solution { public String longestCommonPrefix(String[] strs) { if (str…

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…

一.题目链接:https://leetcode.com/problems/longest-common-prefix/ 二.题目大意: 给定若干个字符串,找出它们的最长公共子串. 三.题解: 这道题目应该是一道典型题目,需要着重掌握的.该题目的解法并不是很难,代码最好精简化.本题有两种思路: 1.纵向扫描 任意选出一个字符串(一般都是选择第一个字符串),从该字符串的第一个字符起,与剩余所有的字符串的相应位置的字符比较,若出现相应位置字符不同的情况,则立即返回之前匹配成功的前缀. 代码如下: cl…

题目链接:https://leetcode.com/problems/longest-common-prefix/?tab=Description   Problem: 找出给定的string数组中最长公共前缀   由于是找前缀,因此调用indexOf函数应当返回0(如果该字符子串为字符串的前缀时),如果不是则返回-1 Return: the index of the first occurrence of the specified substring, or -1 if there is n…

最长公共前缀问题,考虑没有或只有一个字符串的情况,然后只需要逐个比对就可以了. class Solution { public: string longestCommonPrefix(vector<string>& strs) { ) return string(); ) ]; string a; ;i<strs[].size();i++){ ;j<strs.size();j++){ ][i]!=strs[j][i]) return a; } a+=strs[][i]; }…

func longestCommonPrefix(strs []string) string { { return "" } { ] } ; ; idx++ { ; i < len(strs)-; i++ { ]) { ][ : idx-] } :idx] != strs[i+][:idx] { ][ : idx-] } } } }…

# -*- coding: utf8 -*-'''__author__ = 'dabay.wang@gmail.com'https://oj.leetcode.com/problems/longest-common-prefix/14: Longest Common Prefix Write a function to find the longest common prefix string amongst an array of strings.===Comments by Dabay===…

14. Longest Common Prefix Write a function to find the longest common prefix string amongst an array of strings. 寻找一个数组中最长的公共前缀 例如["baaa","caaabbb","aaaa"]输出"aaa" 结题思路: 判断非空的情况在进行计算 取第一个字符串最为标杆进行对比,因为最终结果一定在第一位中 用第一…

1.题目 14. Longest Common Prefix   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&…

一天一道LeetCode系列 (一)题目: Write a function to find the longest common prefix string amongst an array of strings. (二)题意 求一组字符串中的最长前缀字符串. 举例:字符串组:abc,ab,abdef,abws 最长前缀字符串:ab 我的解法是先求出这组字符串中最短的,然后依次匹配,遇到不同的就退出. class Solution { public: string longestCommonP…

14.Longest Common Prefix 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"] O…

https://leetcode.com/problems/longest-common-prefix/ 原题: Write a function to find the longest common prefix string amongst an array of strings. 思路: 简单,直接遍历查找即可. AC代码: class Solution { public: string longestCommonPrefix(vector<string>& strs) { in…

作者: 负雪明烛 id: fuxuemingzhu 个人博客:http://fuxuemingzhu.cn/ 个人公众号:负雪明烛 本文关键词:prefix, 公共前缀,题解,leetcode, 力扣,Python, C++, Java 目录 题目描述 题目大意 解题方法 遍历前缀子串 使用set 遍历最短字符串 排序 日期 题目地址:https://leetcode.com/problems/longest-common-prefix/description/ 题目描述 Write a fun…

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…

我现在在做一个叫<leetbook>的免费开源书项目,力求提供最易懂的中文思路,目前把解题思路都同步更新到gitbook上了,需要的同学可以去看看 书的地址:https://hk029.gitbooks.io/leetbook/ 014.Longest Common Prefix[E] 问题 Write a function to find the longest common prefix string amongst an array of strings. Subscribe to se…

本题虽然是easy难度,题目也一目了然,问题就是在这里,需要考虑的特殊情况太多,太多限制.导致我一点点排坑,浪费了较多时间. Write a function to find the longest common prefix string amongst an array of strings. 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. class Solution { public String longestCommonPrefix(String[] strs) { int l…

1. 题目 1.1 英文题目 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 "". 1.2 中文题目 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 "". 1.3输入输出 输入 输出 strs = […

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…

题目: Write a function to find the longest common prefix string amongst an array of strings. Subscribe to see which companies asked this question 代码: 上周出差北京一周,都没有做题,这两天继续开始,先从简单的入手. 这个题目一开始以为是找出字符串数组中最长的那个,那不很简单嘛,很快写完了,发现不对. 题目表达不是很清楚,或者是我英语不行,查了下,原来是找…

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…