Method abs

java/Chapter 7/Question7_4/Question.java:21–26

(int a)

	/* Return absolute value */
	public static int abs(int a) {
		if (a < 0) {
			return negate(a);
		}
		else return a;
	}

	/* Multiply a by b by adding a to itself b times */
	public static int multiply(int a, int b) {