题目描述:
Write a function to find the longest common prefix string amongst an array of strings.
题目很唬人,搞清楚前缀的意思就简单了。解题思路就四个字:垂直匹配。
solution:
string longestCommonPrefix(vector<string> &strs) { int n = strs.size(); if(n == 0) return ""; if(n == 1) return strs[0]; string res; for (int j = 0;j < strs[0].size();++j) { for (int i = 1;i < strs.size();++i) { if (j == strs[i].size() || strs[i][j] != strs[0][j]) return res; } res += strs[0][j]; } return res; }
原文链接:https://oj.leetcode.com/discuss/15755/optimal-solution
ps:
部分解法先去寻找最短的string, 再垂直匹配,我觉得没有必要。
转载于:https://www.cnblogs.com/gattaca/p/4279804.html