밍쎄의 코딩공간

import java.util.*; class Solution { public int[] solution(int[] arr, int[] delete_list) { ArrayList tmp = new ArrayList(); HashSet set = new HashSet(); for(int x : delete_list) set.add(x); for(int x : arr){ if(!set.contains(x)) tmp.add(x); } int[] answer = new int[tmp.size()]; for(int i = 0; i < tmp.size(); i++) answer[i] = tmp.get(i); return answer; } } https://school.programmers.co.kr/learn/c..