백준 10872번 자바 : 팩토리얼

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        System.out.println(factorial(n));
    }

    private static int factorial(int n) {
        if(n == 0 || n == 1) return 1;
        return n * factorial(n-1);
    }
}