Sorting dynamic stack?

[lolwe]

Create a program that contains the following functions:
-create two dynamic stacks with integer data contained in an external file.
-Sort items in stacks by the selection sort method
-Record outputs in an external file.
Main function main ()-menu selection functions and check the status of the data

I shouldn`t use arrays or STL only can use vectors but i dont know how to do it howw to make dynamic stack with vectors and how to sort it with selection sort?

Someone help? Sorry for bad english

[ne555]

class dynamic_stack{
private:
   std::vector<T> data;
public:
   void push(const T &obj){
      data.push_back(obj);
   }
   void pop(){
      data.pop_back();
   }
   T& top(){
      return data.back();
   }
};

http://en.wikipedia.org/wiki/Selection_sort