[BOJ_14425] 문자열 집합

설명

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코테 1번에 나올 법한 쉬운 문제

 

코드

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package Data_Structure;

import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;

public class BOJ_14425 {
    public static void main(String[] args) throws Exception{
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int M = sc.nextInt();
        Map<String,Integer> map = new HashMap<>();

        for(int i = 0; i < N; i++){
            String str = sc.next();
            map.put(str,i+1);
        }
        int ans = 0;
        for(int i = 0; i < M; i++){
            String str = sc.next();
            if(map.getOrDefault(str,0) != 0){
                ans++;
            }
        }
        System.out.println(ans);
    }
}

14425번: 문자열 집합