Method swap

java/Chapter 18/Question18_6/QuestionC.java:15–19

(int[] array, int i, int j)

	}
	
	public static void swap(int[] array, int i, int j) {
		int t = array[i];
		array[i] = array[j];
		array[j] = t;
	}
	
	public static boolean validate(int[] array, int left, int right, int pivot, int endLeft) {
		for (int i = left; i <= endLeft; i++) {