프로그래머스-최댓값과 최솟값

import java.util.*;

class Solution {
    public String solution(String s) {
        String answer = "";
        String[] str=s.split(" ");
        int[] num = new int[str.length];
        for(int i=0; i<str.length; i++){
            num[i]=Integer.parseInt(str[i]);
        }
        Arrays.sort(num);
        answer=num[0]+" "+num[num.length-1];
        return answer;
    }
}