public void Insert(NodeInt newNode)
        {
            if (Root == null)
            {
                Root = newNode;
                return;
            }
            NodeInt parent = null, node = Root;

            while (true)
            {
                parent = node;
                if (newNode < node)
                {
                    node = (NodeInt)node.Left;
                    if (node == null)
                    {
                        parent.Left = newNode;
                        return;
                    }
                }
                else
                {
                    node = (NodeInt)node.Right;
                    if (node == null)
                    {
                        parent.Right = newNode;
                        return;
                    }
                }
            }
        }
        public NodeInt Find(NodeInt target)
        {
            var node = Root;

            while (node != null && node.Value != target.Value)
            {
                if (target < node)
                {
                    node = (NodeInt)node.Left;
                }
                else
                {
                    node = (NodeInt)node.Right;
                }
            }
            return(node);
        }