Method factorial

java/Chapter 17/Question17_3/QuestionA.java:21–29

(int num)

	}
	
	public static int factorial(int num) {
		if (num == 1) {
			return 1;
		} else if (num > 1) {
			return num * factorial(num - 1);
		} else {
			return -1; // Error
		}
	}
	
	public static void main(String[] args) {
		for (int i = 1; i < 12; i++) {