static void Main(string[] args) { BinaryTree bTree = new BinaryTree("xvbc[#;a#RE##U"); Console.Write("先序遍历:"); bTree.PreOrder(bTree.Head); Console.WriteLine(); Console.Write("中序遍历:"); bTree.MidOrder(bTree.Head); Console.WriteLine(); Console.Write("后序遍历:"); bTree.AfterOrder(bTree.Head); Console.WriteLine(); Console.Write("广度优先遍历:"); bTree.LevelOrder(); Console.ReadKey(); }