De Qui

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package D31_8;

import java.util.Scanner;

/**
 *
 * @author Administrator
 */
public class De_Qui {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.print("Nhap n : ");
        int n = input.nextInt();

        System.out.println("Ket qua :  " + De_Qui.Giai_Thua(n));

        De_Qui dequi = new De_Qui();
        System.out.println("Ket qua :  " + dequi.Giai_Thua_nonStatic(n));


    }

    public static long Giai_Thua(int n) {
        if (n == 0) {
            return 1;
        } else {
            return n * Giai_Thua(n - 1);
        }
    }

    public long Giai_Thua_nonStatic(int n) {
        if (n == 0) {
            return 1;
        } else {
            return n * Giai_Thua_nonStatic(n - 1);
        }
    }
}