（1） 按先序次序输入二叉树中结点的值，建立一棵以二叉链表作存储结构的二叉树，然后按先序、中序、后序顺序分别遍历这棵二叉树，并完成二叉树的相应信息的统计（如结点数目、二叉树的高度等）；-(1) according to the first sequence in the order of input binary tree node values, the establishment of a linked list to binary tree structure for storage, a