private IntervalTreeNode <T> Search(IntervalTreeNode <T> parentNode, T lowValue, T highValue)
{
while (!object.Equals(parentNode, nilNode) && !AreOverlaping(parentNode, lowValue, highValue))
{
if (!object.ReferenceEquals(nilNode, parentNode.LeftChild) && parentNode.LeftChild.Max.CompareTo(lowValue) >= 0)
{
parentNode = parentNode.LeftChild;
}
else
{
parentNode = parentNode.RigthChild;
}
}
return(object.ReferenceEquals(parentNode, nilNode) ? null : parentNode);
}
private void InsertFixup(IntervalTreeNode <T> node)
{
while (node.Parent.Color == NodeColor.Red)
{
if (object.ReferenceEquals(node.Parent, node.Parent.Parent.LeftChild))
{
IntervalTreeNode <T> y = node.Parent.Parent.RigthChild;
if (y.Color == NodeColor.Red)
{
node.Parent.Color = NodeColor.Black;
y.Color = NodeColor.Black;
node.Parent.Parent.Color = NodeColor.Red;
node = node.Parent.Parent;
}
else if (object.ReferenceEquals(node, node.Parent.RigthChild))
{
node = node.Parent;
LeftRotate(node);
}
else
{
node.Parent.Color = NodeColor.Black;
node.Parent.Parent.Color = NodeColor.Red;
RigthRotate(node.Parent.Parent);
}
}
else if (object.ReferenceEquals(node.Parent, node.Parent.Parent.RigthChild))
{
IntervalTreeNode <T> y = node.Parent.Parent.LeftChild;
if (y.Color == NodeColor.Red)
{
node.Parent.Color = NodeColor.Black;
y.Color = NodeColor.Black;
node.Parent.Parent.Color = NodeColor.Red;
node = node.Parent.Parent;
}
else if (object.ReferenceEquals(node, node.Parent.LeftChild))
{
node = node.Parent;
RigthRotate(node);
}
else
{
node.Parent.Color = NodeColor.Black;
node.Parent.Parent.Color = NodeColor.Red;
LeftRotate(node.Parent.Parent);
}
}
if (node.Parent == null)
{
break;
}
}
this.Root.Color = NodeColor.Black;
}
private bool AreOverlaping(IntervalTreeNode <T> interval, T low, T high)
{
return(interval.Low.CompareTo(high) < 0 && low.CompareTo(interval.High) < 0);
}
public IntervalTree(T parentLowValue, T parentHighValue)
{
this.count = 1;
this.Root = new IntervalTreeNode <T>(parentLowValue, parentHighValue, NodeColor.Black);
}