static void Main(string[] args) { Console.WriteLine("Hello World!"); Console.WriteLine(); Tree Oak = new Tree(); Oak.AddFirst(7); Oak.Root.Left = new Node(2); Oak.Root.Left.Left = new Node(4); Oak.Root.Left.Right = new Node(5); Oak.Root.Right = new Node(3); Console.WriteLine("Inorder Traversal"); Oak.Inorder(Oak.ReturnRoot()); Console.WriteLine(" "); Console.WriteLine(); Console.WriteLine("Preorder Traversal"); Oak.Preorder(Oak.ReturnRoot()); Console.WriteLine(" "); Console.WriteLine(); Console.WriteLine("Postorder Traversal"); Oak.Postorder(Oak.ReturnRoot()); Console.WriteLine(" "); Console.ReadLine(); }