Longest Common Prefix Write a function to find the longest common prefix string amongst an array of strings. 思路:两两字符串挨着找.水题. string commonPrefix(string s1, string s2){ if(s1 == "" || s2 == "") return ""; int k = 0, len1 = s1.…

Write a function to find the longest common prefix string amongst an array of strings. 这道题让我们求一系列字符串的共同前缀,没有什么特别的技巧,无脑查找即可,我们定义两个变量i和j,其中i是遍历搜索字符串中的字符,j是遍历字符串集中的每个字符串.这里将单词上下排好,则相当于一个各行长度有可能不相等的二维数组,我们遍历顺序和一般的横向逐行遍历不同,而是采用纵向逐列遍历,在遍历的过程中,如果某一行没有了,说明其为…

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…

  public class Solution { /** * @param strs: A list of strings * @return: The longest common prefix */ public String longestCommonPrefix(String[] strs) { // write your code here if(strs.length == 0){ return ""; } String prefix = strs[0]; int i =…

Given k strings, find the longest common prefix (LCP). Have you met this question in a real interview?     Example For strings "ABCD", "ABEF" and "ACEF", the LCP is "A" For strings "ABCDEFG", "ABCEFG&…

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. class Solution { public: string longestCommonPrefix(vector<string> &strs) { if(strs.empty()) return ""; ].length(); ; i < strs.size(); ++ i) minL…

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) {…

问题: Write a function to find the longest common prefix string amongst an array of strings. 官方难度: Easy 翻译: 寻找一个字符串数组的最长公共前缀. 方法一: 数组长度为0,返回空字符串. 将数组第一项,作为初始的公共前缀. 从数组第二项开始进入循换,整理当前字符和当前前缀字符的长度. 以小长度的字符串为基准,从头开始逐个匹配,遇到不同的字符时,更新前缀字符. 为防止完全匹配情况,如"aa"…

14. Longest Common Prefix Total Accepted: 112204 Total Submissions: 385070 Difficulty: Easy Write a function to find the longest common prefix string amongst an array of strings. 思路: 题目很简单,求字符串数组的最长的共同前缀.也没什么思路,诸位比较呗,代码如下: public class No_014 { publi…

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(…

Description: Write a function to find the longest common prefix string amongst an array of strings.(最长公共字串) Code: string merge(string&str1, string&str2) { string result=""; int n = (str1.size()<=str2.size())?str1.size():str2.size(); ;…

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…

1- 问题描述 Write a function to find the longest common prefix string amongst an array of strings. 2- 思路分析 将数组内每个字串转换为List,每次批量取出各列表对应元素存入新列表,对新列表使用set去重.若set长度为1,说明元素一样,算入前缀. 3- Python实现 class Solution: # @param {string[]} strs # @return {string} def lo…

题目: Write a function to find the longest common prefix string amongst an array of strings. 代码: class Solution { public: string longestCommonPrefix(vector<string>& strs) { ) return ""; std::]; ; i < strs.size(); ++i ) { size_t j = ;…

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…

题意: Write a function to find the longest common prefix string amongst an array of strings. (Easy) 这两天实验室项目太忙了, 老板各种活,只能挑着先水几道easy题,这两个题是昨天做的没来得及写总结. 分析: 暴力的想法遍历比较一下就行,注意遍历的始末位置.优化的话改天再看看discuss 代码: class Solution { public: string longestCommonPrefix(…

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…

Write a function to find the longest common prefix string amongst an array of strings. 思路:要去是寻找字符串vector里最长的公有前缀. 1.构造迭代器,遍历vector搜索最小string长度.然后从第一个字符开始进行遍历,如果遇到不一样的字符即返回,全部遍历完毕没问题就把它添加到前缀字符串里. 这样做效率比较差,有待改进. class Solution { public: string longestC…

Question Write a function to find the longest common prefix string amongst an array of strings. Solution 第一思路是用Trie,但是对于一道Easy类别的题目,用Trie显然是杀鸡用牛刀. 于是我们可以参考到构造Trie的过程,来找这个最长prefix. 我们先用String array中第一个String初始化Pre,然后遍历剩下的每一个String,找重合的终点,删除不重合的部分. pub…

Longest Common Prefix 题目 给予一个列表,元素为字符串,写一个程序找出最长公共前缀 解题思路 先比较两个字符串,如果第一个字符不一样,则返回空值,比较完成后,用这个公共字符串和下一个元素继续比较,以此类推 class Solution: # @param {string[]} strs # @return {string} def longestCommonPrefix(self, strs): if not strs: return '' if len(strs) ==…

# -*- 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===…

试题请參见: https://oj.leetcode.com/problems/longest-common-prefix/ 题目概述 Write a function to find the longest common prefix string amongst an array of strings. 解题思路 这也是比較简单的算法提, 仅仅需比較比較数组中每一个字符串的第i位就可以, 直至不匹配为止. 记录此时i的值, 则为最长公共前缀. 源码 class Solution { publ…

Problems:Write a function to find the longest common prefix string amongst an array of strings. 就是返回一个字符串数组的所有的公共前缀.不难.我是已第一个字符串为参考,然后依次遍历其他的字符串,一旦遇到不同的.就break.然后返回第一个字符串的相应子序列. class Solution { public: string longestCommonPrefix(vector<string> &…

一次总结两道题,两道题目都比较基础 Description:Write a function to find the longest common prefix string amongst an array of strings. 分析: 这道题目最重要的知道什么叫prefix前缀, 否则一不小心就做成了最长子序列.前缀就是两个序列的前多少位 都要是一样的,不能跳着对齐,这样就比较简单了,也可以求很多个序列的公共前缀. class Solution { public: string longe…

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…

题目:Longest Common Prefix 内容: 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. 理解题目: 如数组 ["a", "b"]   最长的公共前缀字符串是 "": 如数组 ["aa", "aa"]   最长的公…

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.…

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…