private static AvlNode <T> RemoveLeftmostChild(ref AvlNode <T> node)
{
if (node.Left == null)
{
var toReturn = node;
node = node.Right;
return(toReturn);
}
var child = node.Left;
var result = RemoveLeftmostChild(ref child);
node.Left = child;
BalanceIfRightIsHeavy(ref node);
return(result);
}
public static bool Contains(AvlNode <T> node, T value)
{
if (node == null)
{
return(false);
}
var cmp = value.CompareTo(node.Value);
if (cmp < 0)
{
return(Contains(node.Left, value));
}
if (cmp > 0)
{
return(Contains(node.Right, value));
}
return(true);
}
public static T AtIndex(AvlNode <T> node, int index)
{
if (node == null)
{
throw new IndexOutOfRangeException("Noooo");
}
var rootIndex = GetSize(node.Left);
if (index < rootIndex)
{
return(AtIndex(node.Left, index));
}
if (index > rootIndex)
{
return(AtIndex(node.Right, index - rootIndex - 1));
}
return(node.Value);
}
public static int IndexOf(AvlNode <T> node, T value)
{
if (node == null)
{
return(-1);
}
var cmp = value.CompareTo(node.Value);
if (cmp < 0)
{
return(IndexOf(node.Left, value));
}
if (cmp > 0)
{
return(IndexOf(node.Right, value) + GetSize(node.Left) + 1);
}
return(GetSize(node.Left));
}
public static void RotateLeft(ref AvlNode <T> node)
{
Rotate(ref node, 1, 0);
}
public static void RotateRight(ref AvlNode <T> node)
{
Rotate(ref node, 0, 1);
}
public static int GetHeight(AvlNode <T> node)
{
return(node == null ? 0 : node.height);
}
public static int GetSize(AvlNode <T> node)
{
return(node == null ? 0 : node.size);
}
public bool Remove(T value)
{
return(AvlNode <T> .Remove(ref this.root, value));
}
public bool Add(T value)
{
return(AvlNode <T> .Add(ref this.root, value));
}
public T AtIndex(int index)
{
return(AvlNode <T> .AtIndex(this.root, index));
}
public int IndexOf(T value)
{
return(AvlNode <T> .IndexOf(this.root, value));
}
public bool Contains(T value)
{
return(AvlNode <T> .Contains(this.root, value));
}
public AvlTree()
{
root = null;
}