public int getElementCount() {
		if(root == null) {
			return 0;
		} else if(root.left == null && root.right == null) {
			return 1;
		} else {
			return getElementCount(0, root.left)+getElementCount(0, root.right)+1;
		}
	}
	
	public int getElementCount(int count, Node currentNode) {
		if(currentNode != null && currentNode.left != null) {
			getElementCount(count++, currentNode);
		} 
		if(currentNode != null && currentNode.right != null) {
			getElementCount(count++, currentNode);
		}
		return count;
	}