do-while/ Фактуриел

import java.util.Scanner;

public class facturiel {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);

        int n = scan.nextInt();
        int fact = 1;

        do {
            fact = fact * n;
             n--;
            } while(n > 1);
      System.out.println(fact);
    }

}