/// <summary>
/// Adds a node <paramref name="node"/> to <paramref name="header"/>
/// </summary>
/// <param name="node">The node to add.</param>
/// <param name="header">The header.</param>
private static void AddNode(FiboNode node, FiboNode header)
{
node.Right = header;
node.Left = header.Left;
header.Left.Right = node;
header.Left = node;
}
private List <FiboNode> GetSiblingsOf(FiboNode node)
{
var siblings = new List <FiboNode>();
foreach (var n in node.Siblings)
{
siblings.Add(n);
}
return(siblings);
}
private void Consolidate()
{
var upperBound = Convert.ToInt32(Math.Floor(Math.Log(Count, FiboRatio)));
var nodeArray = new FiboNode[upperBound];
var rootNodes = GetSiblingsOf(TopNode);
foreach (var node in rootNodes)
{
var degree = node.Degree;
var x = node;
while (nodeArray[degree] != null)
{
var another = nodeArray[degree];
if (comparer(x.Value, another.Value))
{
MakeChild(another, x);
}
else
{
MakeChild(x, another);
x = another;
}
nodeArray[degree] = null;
degree++;
}
nodeArray[degree] = x;
}
TopNode = null;
foreach (var node in nodeArray)
{
if (node != null)
{
if (TopNode == null)
{
node.Left = node.Right = node;
TopNode = node;
}
else
{
AddNode(node, TopNode);
if (comparer(node.Value, TopNode.Value))
{
TopNode = node;
}
}
}
}
}
/// <summary>
/// Makes the <paramref name="child"/> to its new <param name="parent"/>
/// </summary>
/// <param name="child">The child.</param>
/// <param name="parent">The parent.</param>
private void MakeChild(FiboNode child, FiboNode parent)
{
RemoveNode(child);
if (parent.Child == null)
{
parent.Child = child;
parent.Child.Right = parent.Child.Left = child;
}
else
{
AddNode(child, parent.Child);
}
child.Parent = parent;
parent.Degree++;
child.Mark = false;
}
public void Add(T item)
{
item.ValidateNotNull("The item is null!");
var node = new FiboNode {
Value = item
};
if (TopNode == null)
{
node.Left = node.Right = node;
TopNode = node;
}
else
{
AddNode(node, TopNode);
if (comparer(node.Value, TopNode.Value))
{
TopNode = node;
}
}
Count++;
}
/// <summary>
/// Removes the <paramref name="node"/> from its list.
/// </summary>
/// <param name="node">The node.</param>
private static void RemoveNode(FiboNode node)
{
node.Left.Right = node.Right;
node.Right.Left = node.Left;
}
