天龙八部易语言二叉树源码,可历遍背包，人物，商店物品等等。-Dragon easy language binary tree source, through backpacks, figures, store items and so on.

定义二叉链表类型，实现二叉树的基本操作：建立、先中后序遍历、层次遍历及输出。-The definition of two fork list type, two fork tree to achieve the basic operation: the establishment, the first in the order traversal, hierarchical traversal and output.