Method getTail

java/Chapter 17/Question17_13/QuestionB.java:24–33

(BiNode node)

	}	
	
	public static BiNode getTail(BiNode node) {
		if (node == null) {
			return null;
		}
		while (node.node2 != null) {
			count++;
			node = node.node2;
		}
		return node;
	}
	
	public static void concat(BiNode x, BiNode y) {
		x.node2 = y;