// Helene Martin, CSE 143
// Demonstrates using ListNode objects to build chains of values.
public class ListNodeClient {
	public static void main(String[] args) {
		// for jGRASP debugger (so we can see other lists' names)
		ListNode dummy = new ListNode();
		
		// 42 -> -3 -> 17 -> 9
		/*
		// the long way:
		ListNode list = new ListNode();
		list.data = 42;

		list.next = new ListNode(); // 42 -> 0

		list.next.data = -3; // 42 -> -3

		list.next.next = new ListNode(); // 42 -> -3

		list.next.next.data = 17; // 42 -> -3 -> 17
		*/

		// the short way:
		ListNode list = new ListNode(42, new ListNode(-3, 
				new ListNode(17, new ListNode(9))));
		
		// slide exercises:					 
		ListNode list1 = new ListNode(10, new ListNode(20)); // 10 -> 20
		ListNode list2 = new ListNode(30, new ListNode(40)); // 30 -> 40
		
		// exercise 1:
		//list1.next.next = new ListNode(30);

		// exercise 2:
		//ListNode temp = new ListNode(30);
		//temp.next = list1;
		//list1 = temp;
		// also: list1 = new ListNode(30, list1);

		// exercise 3:
		list1.next.next = list2; // change node 3 first because it's null
		list2 = list2.next;
		list1.next.next.next = null;
	}
}