/*void passRoot(){
    cout << "INORDER: " << endl;
    inorder(root);
    cout << "POSTORDER" << endl;
    postorder(root);
  }

  void inorder(BSTNode<Data> * node) const{
    if(node->left != NULL)
      inorder(node->left);
    cout << node->data << endl;
    if(node->right != NULL)
      inorder(node->right);
  }

  void postorder(BSTNode<Data> *node) const{
    if(node->left != NULL)
      inorder(node->left);
    if(node->right != NULL)
      inorder(node->right);
    cout << node->data << endl;