[백준] 2501 약수 구하기 - Brute Force / Java

• 문제 링크

2501번: 약수 구하기

 

• 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));

        int n = read(), k = read(), i = 0;
        while (k != 0 && i++ <= n) if (n % i == 0) k--;

        bw.write(k == 0 ? String.valueOf(i) : "0");
        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;
    }

}