题解 | 最长公共前缀
最长公共前缀
https://www.nowcoder.com/practice/28eb3175488f4434a4a6207f6f484f47
class Solution { public: /** * 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可 * * * @param strs string字符串vector * @return string字符串 */ string longestCommonPrefix(vector<string>& strs) { if (strs.size() == 0) return ""; int idx = 0; for (; idx < strs[0].size(); ++idx) { for (int i = 1; i < strs.size(); ++i) { if (strs[i][idx] != strs[0][idx]) { return strs[0].substr(0, idx); } } } return strs[0].substr(0, idx); } };