数据结构二叉树实验报告，包括

（1）创建二叉树

（2）递归算法先序遍历二叉树

（3）非递归算法中序遍历二叉树

（4）递归算法后序遍历二叉树

（5）求二叉树叶子结点个数

（6）按层次遍历二叉树

（7）求二叉树树深

-A binary tree data structure, experimental report, including (1) Create a binary tree (2) recursive algorithm for preorder traversal binary tree (3) non-recursive algorithm for binary tree inorder traversal (4) recursive algorithm for binary tree postorder (5) Find the number of binary tree leaf nodes (6) according to the level binary tree traversal (7) Find the binary tree depth