private static AvlNode <T> Insert(AvlNode <T> node, T key)
{
if (node == null)
{
return(new AvlNode <T>(key));
}
if (key.CompareTo(node.Key) < 0)
{
node.Left = Insert(node.Left, key);
}
else
{
node.Right = Insert(node.Right, key);
}
return(Balance(node));
}
private static AvlNode <T> Balance(AvlNode <T> node)
{
FixHeight(node);
if (CalculateBalanceFactor(node) == 2)
{
if (CalculateBalanceFactor(node.Right) < 0)
{
node.Right = RotateRight(node.Right);
}
return(RotateLeft(node));
}
if (CalculateBalanceFactor(node) == -2)
{
if (CalculateBalanceFactor(node.Left) > 0)
{
node.Left = RotateLeft(node.Left);
}
return(RotateRight(node));
}
return(node);
}
public override void Insert(T key)
{
_root = Insert(_root, key);
Count++;
}
private static int CalculateBalanceFactor(AvlNode <T> node)
{
return((int)(GetHeight(node.Right) - GetHeight(node.Left)));
}
private static uint GetHeight(AvlNode <T> node)
{
return(node == null ? 0 : node.Height);
}
