Method printLinkedListTree

java/Chapter 17/Question17_13/QuestionA.java:38–46

(BiNode root)

	}

	public static void printLinkedListTree(BiNode root) {
		for (BiNode node = root; node != null; node = node.node2) {
			if (node.node2 != null && node.node2.node1 != node) {
				System.out.print("inconsistent node: " + node);
			}
			System.out.print(node.data + "->");
		}
		System.out.println();
	}

	public static BiNode createTree() {
		BiNode[] nodes = new BiNode[7];