数据结构二叉树的用建立，用二叉链表作为二叉树的存储结构，完成了二叉树的中序遍历后序遍历、前序遍历以及叶子节点、二叉树节点总数的递归算法实现，可运行！-Binary tree data structure with the establishment of the list with a binary storage structure as a binary tree, complete binary tree in postorder traversal order traversal, preorder traversal, and leaf nodes, the total number of binary recursive algorithm node , run!