14:Longest Common Prefix【字符串】

题目链接：click~

/*题意：求一串单词的公共前缀*//** *思路：比较每个单词的第i位，直到不同 */class Solution {public:    string longestCommonPrefix(vector<string>& strs) {        string s;        if(strs.size() == 0) return s;        int n = strs.size();        int index = 0, i;        for(; ; index++) {            if(strs[0].size() <= index) break;            for(i = 1; i < n; i ++) {                if(strs[0][index] != strs[i][index])                    break;            }            if(i != n) break;            s = s+strs[0][index];        }        return s;    }};