class Stack
{
  private CircularList list;


  Stack(int size)  //the constructor  
    //you should create the instance of CircularList (called 
    //list) here, passing in size to it's constructor.


  void Push(int element)
    //This method should use the appropriate methods from the 
    //CircularList class to push element onto the stack.
    //make sure the stack isn't full before you push!


  int Pop()
    //This method should use the appropriate methods from the 
    //CircularList class to pop element from the stack.
    //make sure the stack isn't empty before you pop!


  boolean IsEmpty()
    //this method returns true if stack is empty, false otherwise.
    //again, use a method from the CircularList class.


  boolean IsFull()
    //this method returns true if array is full, false otherwise.
    //again, use a method from the CircularList class.

  void PrintStack()
    //this method should use methods from the CircularList class
    //to print the contents of the stack to the screen.
    //After executing this procedure, the stack contents should not
    //have changed.
} //end Stack class