class Rekursjon {
    public static void main(String[] args) {
        System.out.println(fac(10));
    }

    private static void metode(int tall) {
        if (tall < 0) return;
        System.out.println(tall);
        metode(tall - 1);
        System.out.println(tall);
    }

    private static int fac(int tall) {
        if (tall <= 1) return 1;
        return tall * fac(tall - 1);
    }
}