public void Merge(BinomialQueue <T> other)
{
int maxIndex = 0;
if (other != null)
{
maxIndex = Math.Max(k, other.k);
Node lastNode = null;
for (int i = 0; i < maxIndex; i++)
{
var node1 = queue[i];
var node2 = other.queue[i];
Node[] nodes = MergeTree(node1, node2);
if (nodes[0] == null)
{
nodes[0] = lastNode;
}
else
{
nodes = MergeTree(nodes[0], lastNode);
}
lastNode = nodes[1];
queue[i] = nodes[0];
CheckMin(queue[i]);
}
this.queue[maxIndex] = lastNode;
maxIndex = lastNode == null? maxIndex: maxIndex + 1;
this.k = maxIndex;
CheckMin(lastNode);
}
}
static void BinomialQueueTest()
{
int[] datas = { 13, 23, 51, 24, 65, 12, 21, 24, 65, 14, 26, 16, 18 };
BinomialQueue <int> bQueue = new BinomialQueue <int>();
foreach (var data in datas)
{
bQueue.Add(data);
}
bQueue.DeleteMin();
}
public void Add(T value)
{
if (IsEmpty())
{
Node node = new Node(value);
k = 1;
queue[0] = node;
min = value;
}
else
{
BinomialQueue <T> tempQueue = new BinomialQueue <T>(capacity);
tempQueue.Add(value);
this.Merge(tempQueue);
}
}
public void DeleteMin()
{
if (IsEmpty())
{
throw new Exception("is Empty");
}
int index = -1;
Node node = null;
for (int i = 0; i < k; i++)
{
node = queue[i];
if (node != null)
{
if (node.Value.CompareTo(min) <= 0)
{
index = i;
break;
}
}
}
//remove Bk
queue[index] = null;
//Build B0-Bk-1
BinomialQueue <T> other = new BinomialQueue <T>();
int num = 0;
var sibling = node.FirstChild;
while (sibling != null)
{
other.AddNode(sibling, num);
var temp = sibling.Sibling;
sibling.Sibling = null;
sibling = temp;
num++;
}
//merge
this.Merge(other);
}