题解 | #最长公共前缀#
最长公共前缀
https://www.nowcoder.com/practice/28eb3175488f4434a4a6207f6f484f47
import java.util.*; public class Solution { /** * 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字符串一维数组 * @return string字符串 */ public String longestCommonPrefix (String[] strs) { // write code here if(strs.length == 0){ return ""; } int len = strs[0].length(); StringBuilder sb = new StringBuilder(); for(int i=0; i<len; i++){ for(int j=1; j<strs.length; j++){ if(strs[j].length() <= i || strs[j].charAt(i) != strs[0].charAt(i)){ return sb.toString(); } } sb.append(strs[0].charAt(i)); } return sb.toString(); } }