[프로그래머스] 나누어 떨어지는 숫자 배열

import java.util.*;
class Solution {
    public int[] solution(int[] arr, int divisor) {

        ArrayList<Integer> list = new ArrayList<>();
        
        for(int i=0; i<arr.length; i++){
            if(arr[i]%divisor == 0){
                list.add(arr[i]);
            }
        }
        
        if(list.isEmpty()){
            list.add(-1);
        }
        
        Collections.sort(list);
        
        int [] answer = new int [list.size()];
        
        for(int i=0; i<list.size(); i++){
            answer[i]= list.get(i);
        }
        
        return answer;
    }
}