[SWEA] 문자열 교집합

 

 

[문제]

https://swexpertacademy.com/main/code/problem/problemDetail.do?contestProbId=AV-Un3G64SUDFAXr

SW Expert Academy

 

 

 

[소스 코드]

import java.io.*;
import java.util.*;
public class Solution {
	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringTokenizer st;
		int T = Integer.parseInt(br.readLine());
		for(int tc=1;tc<=T;tc++) {
			st = new StringTokenizer(br.readLine());
			int n = Integer.parseInt(st.nextToken());
			int m = Integer.parseInt(st.nextToken());
			HashSet<String> hs = new HashSet<>();
			st = new StringTokenizer(br.readLine());
			for(int i=0;i<n;i++) {
				hs.add(st.nextToken());
			}
			int result = 0;
			st = new StringTokenizer(br.readLine());
			for(int i=0;i<m;i++) {
				if(hs.contains(st.nextToken())) result++;
			}
			System.out.println("#"+tc+" "+result);
		}
	}
}