static void Main(string[] args)
{
BinaryTree bt = new BinaryTree(50);
bt.head.Left = new Node(20);
bt.head.Left.Left = new Node(5);
bt.head.Left.Right = new Node(25);
bt.head.Right = new Node(70);
bt.PrintTree();
Console.WriteLine("*************************************");
bt.add(30);
bt.add(85);
bt.add(17);
bt.PrintTree();
Console.WriteLine("*************************************");
Console.WriteLine(bt.GetMax());
Console.WriteLine(bt.GetMax2());
Console.WriteLine(bt.GetMin());
Console.WriteLine(bt.Find(30).Value);
Console.WriteLine(bt.Find2(25).Value);
Console.WriteLine(bt.Delete(700));
Console.WriteLine(bt.Delete(30));
bt.PrintTree();
Console.WriteLine("NOTICE!!!!! the value : '30' has been deleted !");
Console.WriteLine(bt.Delete(20));
bt.PrintTree();
Console.WriteLine("NOTICE!!!!! the value : '20' CANOT be deleted !");
}