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. If there is no common prefix, return an empty string "". Example 1: Input: ["flower","flow","flight"] Output: "fl" Exa…

这道题是LeetCode里的第14道题. 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…

公众号:爱写bug 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 "". 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 "". Example 1: Input: ["flower"…

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…

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 = […

题意:给多个字符串,返回这些字符串的最长公共前缀. 思路:直接逐个统计同一个位置上的字符有多少种,如果只有1种,那么就是该位是相同的,进入下一位比较.否则终止比较,返回前缀.可能有一个字符串会比较短,所以前缀最长也只是最短字符串的长度. class Solution { public: string longestCommonPrefix(vector<string>& strs) { string ans=""; if(strs.empty()) return a…

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…

问题:链接 Write a function to find the longest common prefix string amongst an array of strings. 解答: 注意 当传入參数为空,即vector<string> 大小为0时.应该直接返回一个空字符串"".而不是返回NULL. 这点须要特别注意. 代码: class Solution { public: string longestCommonPrefix(vector<string&…

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…

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&…

Longest Common Subsequence最长公共子序列: 每个dp位置表示的是第i.j个字母的最长公共子序列 class Solution { public: int findLength(vector<int>& A, vector<int>& B) { int len1 = A.size(); int len2 = B.size(); || len2 == ) ; vector<vector<,vector<)); ;i <=…

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…

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…

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…

［抄题］: Write a function to find the longest common prefix string amongst an array of strings. 在 "ABCD" "ABEF" 和 "ACEF" 中,  LCP 为 "A" 在 "ABCDEFG", "ABCEFG", "ABCEFA" 中, LCP 为 "ABC&qu…

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…

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. 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;…

题目: Write a function to find the longest common prefix string amongst an array of strings. 题意: 写出一个函数.找到一组数组中的最长公共子串. 算法分析: 须要构建两重循环.第一层是最短子串的长度,还有一层是遍历字符串数组中的每一个成员. brute force的想法,以第一个字符串为标准.对于每一个字符串从第一个字符開始,看看是不是和标准一致,假设不同,则跳出循环返回当前结果.否则继续下一个字符. AC…

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: Write a function to find the longest common prefix string amongst an array of strings. 思路: 题意:找出字符串的最大的公共前缀 思路是写一个比较的函数,遍历 - 代码: public class Solution { public String longestCommonPrefix(String[] strs) { String result = null; if(strs == null){ re…

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…

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(…

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…

Longest Common Prefix Write a function to find the longest common prefix string amongst an array of strings. 题目的意图 It seems that it is not to check between pair of strings but on all the strings in the array. For example: {"a","a",&quo…

Question: 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&q…

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…