public static void main(String[] args) {
        System.out.println("цикл   " + factCycle(4));

        System.out.println("рекурсия   " + factRecyrsia(4));
    }

    public static int factCycle(int n)
    {
        int result = 1;
        for(int i=1;i<=n;i++)
        {
            result *=i;
        }
        return result;
    }

    public static int factRecyrsia(int n)
    {
        int result;

        if (n == 1)
            return 1;
        result = factRecyrsia(n - 1) * n;
        return result;
    }