import java.util.*; class Solution { public int solution(String before, String after) { int answer = 0; String[] arr1 = before.split(""); String[] arr2 = after.split(""); Arrays.sort(arr1); Arrays.sort(arr2); String a = ""; String b = ""; for (int i = 0; i < arr1.length; i++) { a += arr1[i]; b += arr2[i]; } if (a.equals(b)) { answer = 1; } return answer; } }