public class FactorialVariations {
    public static int factorialRecursive(int n) {
        if (n <= 1) {
            return 1;
        }
        return n * factorialRecursive(n - 1);
    }

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

    public static int main() {
        System.out.println(factorialRecursive(5));
        System.out.println(factorialIterative(5));
        System.out.println(factorialRecursive(7));
        System.out.println(factorialIterative(7));
        System.out.println(factorialRecursive(10));
        System.out.println(factorialIterative(10));
        return 0;
    }
}