熟练掌握二叉树的各种遍历算法，并能灵活运用遍历算法实现二叉树的其它操作；-Proficiency in a variety of binary tree traversal algorithm, and other operations of the binary tree traversal algorithms to achieve flexibility in the use of

 Your shell prompt MUST adhere to the following format: o Current date (optional) and time (mandatory) followed by the hash sign (e.g., 13:03:00#)  Your shell MUST support, at minimum, the following commands: o The internal shell co