自己构建的链表。普通的二叉树的各种功能。对栈的应用，行编辑程序。线索二叉树先中后三种线索化及遍历，还有递归的取消线索化。对出栈序列的统计与输出。-Build your own list. Common binary various functions. Applications for the stack, line editing program. After the first of three binary clues clues and traverse, and recursive c