[백준] 2577 숫자의 개수 - Implementation / Java

• 문제 링크

2577번: 숫자의 개수

 

• 풀이 코드

import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;

public class Main {

    public static void main(String[] args) throws IOException {
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        StringBuilder sb = new StringBuilder();

        int n = read() * read() * read();
        int[] arr = new int[10];

        do arr[n % 10]++; while ((n /= 10) > 0);

        for (int i : arr) sb.append(i).append("\n");

        bw.write(sb.toString());
        bw.flush();
    }

    private static int read() throws IOException {
        int c, n = System.in.read() & 15;
        while ((c = System.in.read()) > 32) n = (n << 3) + (n << 1) + (c & 15);

        return n;
    }

}