LeetCode (4) . Longest Common Prefix
2018-04-01 19:50
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题目：Write a function to find the longest common prefix string amongst an array of strings. 翻译：写一个函数（方法），找出字符串数组中的最长公共前缀 比如："abcdejfd", "abcdjjkjk", "abcd", "abcdreoj" 那么最长的公共前缀是 "abcd"
#ifndef LEETCODE_SOLUTION_H#define LEETCODE_SOLUTION_H#include <vector>#include <string>using namespace std;class Solution{public:string longestCommonPrefix(vector<string>& strs){if (strs.empty ())return "";for (size_t i = 0; i < strs.front ().size (); ++i) // 先找一个字符串作为比较的基数{for (const auto &str : strs)if (i == str.size () || str[i] != strs.front ().at (i))return strs.front ().substr (0, i);}}};#endif //LEETCODE_SOLUTION_H
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