static void Main(string[] args)
{
BinaryTree b = new BinaryTree();
b.insert(8);
b.insert(10);
b.insert(10);
//b.insert(15);
//b.insert(11);
//b.insert(9);
//b.insert(26);
b.insert(4);
//b.insert(6);
//b.insert(2);
//b.insert(2);
b.Inorder();
b.Postorder();
//Console.WriteLine(b.Min());
//Console.WriteLine(b.Max());
b.Delete(99);
b.Inorder();
}