/// <summary>
/// Determines the balance of a given node
/// </summary>
protected virtual int getBalance(AVLTreeNode <T> root)
{
//Balance = right child's height - left child's height
return(this.GetHeight(root.RightChild) - this.GetHeight(root.LeftChild));
}
/// <summary>
/// Removes a given value from the tree and rebalances the tree if necessary.
/// </summary>
public override bool Remove(T value)
{
AVLTreeNode <T> valueNode = this.Find(value);
return(this.Remove(valueNode));
}