链表实现的栈，并包含相应的栈操作。栈（stack）是一种特殊的线性表。其特殊性在于限定插入和删 除数据元素的操作只能在线性表的一端进行。-Linked list implementation of the stack and the stack contains the corresponding operation. Stack (stack) is a special linear form. Its uniqueness lies in defining insert and delete data elements of the operation can only be carried out online at one end of the table.