public void Delete(T value)
{
AVLNode <T> current = Find(value);
if (current.ChildCount == 0)
{
if (current.IsLeftChild)
{
current.Parent.left = null;
RecursiveBalacing(current.Parent);
}
else if (current.IsRightChild)
{
current.Parent.right = null;
//current = null;
RecursiveBalacing(current.Parent);
}
else if (current == root)
{
root = null;
}
}
else if (current.ChildCount == 2)
{
AVLNode <T> candidate = Maximum(current.left);
current.Value = candidate.Value;
if (candidate.Parent != current)
{
candidate.Parent.right = candidate.left;
RecursiveBalacing(candidate.Parent);
}
if (current != root)
{
current.Parent = candidate.Parent;
candidate.Parent.left = candidate;
current.left = candidate.left;
candidate.left = null;
}
}
else if (current.ChildCount == 1)
{
AVLNode <T> child = current.left == null ? current.right : current.left;
if (current.IsLeftChild)
{
current.Parent.left = child;
// current = null;
RecursiveBalacing(current.Parent);
}
else if (current.IsRightChild)
{
current.Parent.right = child;
// current = null;
RecursiveBalacing(current.Parent);
}
else if (current == root)
{
// current = null;
root = child;
RecursiveBalacing(root);
}
}
}