static void TestTree()
{
BinarySearchTree <int> tree = new BinarySearchTree <int>(5, null, null);
tree.Insert(tree.GetRootNode(), -8);
tree.Insert(tree.GetRootNode(), 10);
tree.Insert(tree.GetRootNode(), 3);
tree.Insert(tree.GetRootNode(), 8);
tree.Insert(tree.GetRootNode(), 9);
tree.Insert(tree.GetRootNode(), 0);
Console.WriteLine(tree.FindMin(tree.GetRootNode()).data);
tree.Print();
tree.DeleteNode(10);
tree.Print();
//Console.WriteLine(tree.Search(tree.GetRootNode(), 9).data);
}