这是我们数据结构的实验，内容报告：分别采用递归和非递归算法建立二叉树；采用先序、中序和后序三种方式遍历该二叉树；按层次遍历该二叉树。 -This is the data structure of the experiment, the contents of the report: were used to establish the recursive and non recursive algorithm binary tree using the first order, the o