1.对任意给定的二叉树（顶点数自定）建立它的二叉链表存储结构，并实现二叉树的先序、中序、后序三种遍历，输出三种遍历的结果。

2． 求二叉树高度、结点数、度为1的结点数和叶子结点数-1. On any given binary tree (top points from the set) to establish its binary linked list storage structure and to achieve binary tree preorder, inorder, postorder traversal of three, the output of three traverse results. 2. Find binary tree height, nodes, the number of nodes degree 1 nodes and leaves