static void TestPopTop()
{
Console.WriteLine("======| Testing Adding and PopTop |======");
Console.WriteLine();
MyHeap <int> heap = new MyHeap <int>();
int previousVal, currentVal;
heap.Add(10); Console.WriteLine("Adding 10 to the heap...");
heap.Add(21); Console.WriteLine("Adding 21 to the heap...");
heap.Add(1); Console.WriteLine("Adding 1 to the heap...");
heap.Add(33); Console.WriteLine("Adding 33 to the heap...");
heap.Add(13); Console.WriteLine("Adding 13 to the heap...");
heap.Add(55); Console.WriteLine("Adding 55 to the heap...");
heap.Add(2); Console.WriteLine("Adding 2 to the heap...");
heap.Add(0); Console.WriteLine("Adding 0 to the heap...");
heap.Add(77); Console.WriteLine("Adding 77 to the heap...");
heap.Add(67); Console.WriteLine("Adding 67 to the heap...");
heap.Add(22); Console.WriteLine("Adding 22 to the heap...");
previousVal = heap.PopTop();
while (heap.Count > 0)
{
currentVal = heap.PopTop();
Debug.Assert(currentVal < previousVal); Console.WriteLine("Current popped value of " + currentVal + " is less than the previous popped value of " + previousVal);
previousVal = currentVal;
}
Console.WriteLine();
}
/*static void TestComparer()
* {
* Console.WriteLine("======| Testing Heap Comparer |======");
* MyHeap<Person> heap = new MyHeap<Person>();
* heap.Add(10); Console.WriteLine("Adding 10 to the heap...");
*
*
* }*/
static void TestHeapSort()
{
Console.WriteLine("======| Testing Heap Sort |======");
MyHeap <int> heap = new MyHeap <int>();
heap.Add(10); Console.WriteLine("Adding 10 to the heap...");
heap.Add(22); Console.WriteLine("Adding 22 to the heap...");
heap.Add(39); Console.WriteLine("Adding 39 to the heap...");
heap.Add(2); Console.WriteLine("Adding 2 to the heap...");
heap.Add(87); Console.WriteLine("Adding 87 to the heap...");
heap.Add(0); Console.WriteLine("Adding 0 to the heap...");
heap.Add(1); Console.WriteLine("Adding 1 to the heap...");
heap.Add(49); Console.WriteLine("Adding 49 to the heap...");
heap.Add(66); Console.WriteLine("Adding 66 to the heap...");
heap.Add(11); Console.WriteLine("Adding 11 to the heap...");
Console.WriteLine();
heap.Sort(); Console.WriteLine("Sorting heap...");
Console.WriteLine();
for (int i = 1; i < heap.Count - 1; i++)
{
Debug.Assert(heap[i] < heap[i + 1]); Console.WriteLine("previous value of " + heap[i] + " is less than current value of " + heap[i + 1]);
}
Console.WriteLine();
}
static void TestInvariants(MyHeap <int> aHeap)
{
Console.WriteLine("Testing heaps invariants...");
for (int i = 1; i < aHeap.Count / 2; i++)
{
Debug.Assert(aHeap[i].CompareTo(aHeap[i * 2]) >= 0); //checking left child is less than parent
if ((i * 2) + 1 < aHeap.Count)
{
Debug.Assert(aHeap[i].CompareTo(aHeap[(i * 2) + 1]) >= 0); //checking right child is less than parent
}
}
Debug.Assert(aHeap.Count == aHeap.underlyingList.Count - 1); //Checking that all values of the list are filled
Console.WriteLine("All invariants satisfied");
}
static void TestRemove()
{
MyHeap <int> heap = new MyHeap <int>();
heap.Add(10); Console.WriteLine("Adding 10 to the heap...");
heap.Add(21); Console.WriteLine("Adding 21 to the heap...");
heap.Add(1); Console.WriteLine("Adding 1 to the heap...");
heap.Add(33); Console.WriteLine("Adding 33 to the heap...");
heap.Add(13); Console.WriteLine("Adding 13 to the heap...");
heap.Add(55); Console.WriteLine("Adding 55 to the heap...");
heap.Add(2); Console.WriteLine("Adding 2 to the heap...");
heap.Add(0); Console.WriteLine("Adding 0 to the heap...");
heap.Add(77); Console.WriteLine("Adding 77 to the heap...");
heap.Add(67); Console.WriteLine("Adding 67 to the heap...");
heap.Add(22); Console.WriteLine("Adding 22 to the heap...");
Console.WriteLine(heap.ToString());
heap.Remove(13);
Console.WriteLine(heap.ToString());
}
static void Main(string[] args)
{
TestPopTop();
TestHeapSort();
Random rand = new Random();
Console.WriteLine("======| Testing Invariants of Heaps|======");
Console.WriteLine();
MyHeap <int> heap1 = new MyHeap <int>();
for (int i = 0; i < 1000; i++)
{
heap1.Add(rand.Next(1, 1500));
}
TestInvariants(heap1);
Console.WriteLine();
MyHeap <int> heap2 = new MyHeap <int>();
for (int i = 0; i < 10000; i++)
{
heap2.Add(rand.Next(-30000, 30000));
}
TestInvariants(heap2);
Console.WriteLine();
for (int i = 0; i < rand.Next(300, 700); i++)
{
heap1.PopTop();
}
TestInvariants(heap1);
Console.WriteLine();
for (int i = 0; i < 10000; i++)
{
heap2.PopTop();
}
TestInvariants(heap2);
Console.ReadLine();
}
