BOJ - 17219 ) 비밀번호찾기

---

 

https://www.acmicpc.net/problem/17219

17219번: 비밀번호 찾기

---

해쉬맵에 다 떄려넣고 GET으로 M개만큼 불러오자

출력에 시간이 걸리므로, 모아서 출력하자.

---

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));
		StringBuilder   sb = new StringBuilder();
		StringTokenizer st = new StringTokenizer(br.readLine());
		int N = Integer.parseInt(st.nextToken());
		int M = Integer.parseInt(st.nextToken());
		HashMap<String, String> hm = new HashMap<>();
		for(int i=0;i<N;i++) {
			st = new StringTokenizer(br.readLine());
			String key = st.nextToken();
			String val = st.nextToken();
			hm.put(key, val);
		}
		for(int i=0;i<M;i++) {sb.append(hm.get(br.readLine())+"\n");}
		
		bw.write(sb.toString());
		bw.flush();
		bw.close();
	 }
}

---