用一维整数数组实现数据结构中的堆栈(Stack)。用int数组来存储栈内元素，用int来表示top和bottom。在Stack类内，实现栈的基本运算-Use a d integer array realize the data structure is the Stack). Use int array to storage stack elements in, with the top and bottom int to said. In the Stack in class, and realize the basic computing Stack