Lv 3. 불량사용자 (Java)
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Algorithm & Data Structures/Programers
import java.util.Arrays; import java.util.HashSet; public class Solution { static boolean[] check; static HashSet set; public static int solution(String[] user_id, String[] banned_id) { check = new boolean[user_id.length]; set = new HashSet(); for(int i=0; i