public class NodeTester {

	public static void main (String[] args) {

		System.out.println("Part 1:");
		/* 1a. create a new blank (value 0) node n1 */
		Node n1 = new Node();

		/* 1b. create a new node n2 with a value of 9 */
		Node n2 = new Node(9);

		/* 1c. print the values in n1 and n2 */
		System.out.println("n1's value: " + n1.getValue());
		System.out.println("n2's value: " + n2.getValue());

		System.out.println("\n\nPart 2:");
		/* 2a. connect n1 to n2 such that n2 is before n1 */
		n2.setNext(n1);
		// or n2.next = n1 since the next field is protected.

		/* 2b. print the value in n1 and n2 without using the variable n1 */
		System.out.println("n1's value: " + n2.next.getValue());
		System.out.println("n2's value: " + n2.getValue());

		System.out.println("\n\nPart 3:");
		/* 3a. create a new node n3 with a value of 20 */
		Node n3 = new Node(20);

        /* 3b. assign our n1 variable so that it also references
		       the newly created node with data value 20 */
		n1 = n3;

		/* 3c. Can you still print the values in all 3 nodes? */
		System.out.println("No longer n1's value: " + n1.getValue());
		System.out.println("old n1's value: " + n2.next.getValue());
		System.out.println("n2's value: " + n2.getValue());
		System.out.println("n3's value: " + n3.getValue());


		System.out.println("\n\nPart 4:");
		/* 4a. connect n3 to the other two nodes such that n3 is
			   in between the other two */
		n3.next = n2.next;
		n2.next = n3;		

		/* 4b. print all 3 values using only the n2 variable.
			   That is, you cannot use the variables n1 or n3 */
		System.out.println("old n1's value: " + n2.next.next.getValue());
		System.out.println("n2's value: " + n2.getValue());
		System.out.println("n3's value: " + n2.next.getValue());	   
		
		
		System.out.println("\n\nPart 5:");
		/* 5. Create a method that accepts a node as a parameter
			  and prints out the value of the given node as well 
			  as the values of all nodes that follow it. */
		printList(n2);
	}
	
	public static void printList(Node start) {
		System.out.println("With while loop:");
		Node cur = start;
		while (cur != null) {
			System.out.println("value: "+cur.getValue());
			cur = cur.next;
		}
		
		System.out.println("\nWith for loop:");
		// Could also do it with a for-loop:
		for (Node curr = start; curr != null; curr = curr.next) {
			System.out.println("value: "+curr.getValue());
		}
	}
}