[백준] 3052 나머지 - Java

문제

링크

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코드

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        boolean[] arr = new boolean[42];
        for (int i = 0; i < 10; i++) {
            arr[Integer.parseInt(br.readLine()) % 42] = true;
        }
        br.close();

        int count = 0;
        for (int i = 0; i < arr.length; i++) {
            if (arr[i]) {
                count++;
            }
        }
        System.out.println(count);
    }
}

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리뷰

처음에 잘못 방향을 잡아 헷갈렸다 😅