Java Study : 7주차 - 백준 문제풀이

https://www.acmicpc.net/problem/11653

11653번: 소인수분해

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);

        int num = in.nextInt();

        for(int i =2; i*i <= num; i++) {
            while(num % i == 0) {
                System.out.println(i);
                num /= i;
            }
        }

        if( num != 1) {
            System.out.println(num);
        }

    }
}

 

 

https://www.acmicpc.net/problem/1712

1712번: 손익분기점

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);

        int a = in.nextInt();
        int b = in.nextInt();
        int c = in.nextInt();
        int i = 1;

        if(b < c) {
            System.out.println((a/(c-b)) + 1);
        }
        else {
            System.out.println(-1);
        }

    }
}