[백준] 10816번 숫자 카드 2 문제! (silver 4

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.HashMap;
import java.util.StringTokenizer;

public class Main{

	public static void main(String[] args) throws IOException {
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw=new BufferedWriter(new OutputStreamWriter(System.out));
		HashMap<Integer,Integer> card=new HashMap<>();
		StringTokenizer st;
		int n=Integer.parseInt(br.readLine());
		st=new StringTokenizer(br.readLine());
		for(int i=0; i<n; i++) {
			int numOfCard=Integer.parseInt(st.nextToken());
			if(card.get(numOfCard)==null) {
				card.put(numOfCard, 1);
			}
			else {
				card.replace(numOfCard, card.get(numOfCard)+1);
			}
		}
		int m=Integer.parseInt(br.readLine());
		st=new StringTokenizer(br.readLine());
		for(int i=0; i<m; i++) {
			int numOfCard=Integer.parseInt(st.nextToken());
			if(card.get(numOfCard)!=null) {
				bw.write(card.get(numOfCard)+" ");
			}
			else {
				bw.write(0+" ");
			}
		}
		bw.flush();
	}
}