本程序的要求是给出一个二叉树的中序和后序遍历，运用递归和非递归两种方法确定二叉树，并输出二叉树的前序序列和显示二叉树的树形结构。-The requirements of this program is to give a binary tree in inorder and preorder using recursive and non-recursive two methods to determine the binary tree, and outputs the preamble se