数据结构入门：顺序栈的应用，参考《大话数据结构》这本书。-Getting data structures: sequential application stack, refer to Westward the data structure this book.

数据结构基础内容，两栈共享空间，参考《大话数据结构》-Structural basis of data content, two stacks shared space, refer to Westward data structure