A로 B만들기(문제35)

import java.util.*;
class Solution {
    public int solution(String before, String after) {
        char[] beforeArray = before.toCharArray();
        char[] afterArray = after.toCharArray();
        Arrays.sort(beforeArray);
        Arrays.sort(afterArray);
        for(int i=0 ; i<before.length() ; i++){
            if(beforeArray[i] != afterArray[i]){
                return 0;
            }
        }
        return 1;
    }
}