栈（Stack）是限定只能在表的一端进行插入和删除操作的线性表。在表中，允许插入和删除的一端称作“栈顶(top)”，不允许插入和删除的另一端称作“栈底(bottom)”。 -Stack (Stack) is limited to only one end of the table to insert and delete operations of the linear table. In the table to allow the insert and delete one end kn