package Algorithm.leetcode.Array; import java.util.Arrays; class No14 { public String longestCommonPrefix(String[] strs) { Arrays.sort(strs); int i = 0; if (strs.length == 0) { return ""; } if (strs == null) { return null; } while (i < strs[0].length() && strs[0].toCharArray()[i] == (strs[strs.length - 1].toCharArray()[i])) { i++; } if (i == 0) { return ""; } else { return strs[0].substring(0, i); } } public static void main(String[] args) { System.out.println(111); } }