// Start is called before the first frame update
void Start()
{
RB tree = new RB();
tree.Insert(5);
tree.Insert(3);
tree.Insert(7);
tree.Insert(1);
tree.Insert(9);
tree.Insert(-1);
tree.Insert(11);
tree.Insert(6);
tree.DisplayTree();
tree.Delete(-1);
tree.DisplayTree();
tree.Delete(9);
tree.DisplayTree();
tree.Delete(5);
tree.DisplayTree();
Console.ReadLine();
}