利用构造完全二叉树的方法建立二叉树结构，并实现二叉树的先序、中序、后序遍历以及求深度操作。 例如：依次输入字符ABCDE#F##G####H-Constructed using methods established complete binary tree binary tree structure, and to achieve binary tree preorder, inorder, preorder, and the depth of the operation. For