public void ConvertingToBinomialMinHeap()
{
var maxHeap = new BinomialMaxHeap <int>();
int maxHeapElement = 50000;
int minHeapElement = -50000;
int addedElements = 0;
//Adding every seventh number, then every fifth number,
//every third and at last all numbers
//NOTE: some items are added more than once
for (int i = 7; i > 0; i -= 2)
{
int el = minHeapElement;
while (el <= maxHeapElement)
{
maxHeap.Add(el);
addedElements++;
el += i;
}
}
if (maxHeap.Count != addedElements)
{
Assert.Fail();
}
// Binomial min heap heapified from the max heap. Has to be the same
// as the converted min heap
var heapifiedMinHeap = new BinomialMinHeap <int>();
heapifiedMinHeap.Heapify(maxHeap.ToArray());
var minHeap = maxHeap.ToMinHeap();
if (minHeap.Count != heapifiedMinHeap.Count)
{
Assert.Fail();
}
var min1 = heapifiedMinHeap.PeekMin();
var min2 = minHeap.PeekMin();
int removedElements = 0;
while (!heapifiedMinHeap.IsEmpty && !minHeap.IsEmpty)
{
if (min1 > heapifiedMinHeap.PeekMin())
{
Assert.Fail();
}
if (min2 > minHeap.PeekMin())
{
Assert.Fail();
}
min1 = heapifiedMinHeap.PopMin();
min2 = minHeap.PopMin();
removedElements++;
if (min1 != min2)
{
Assert.Fail();
}
}
Assert.IsTrue(heapifiedMinHeap.IsEmpty &&
minHeap.IsEmpty &&
heapifiedMinHeap.Count == 0 &&
minHeap.Count == 0 &&
addedElements == removedElements);
}