#include "queue.h"
#include "sequence.h"

namespace seq
{
   class DynamicArray: public Queue
   {
   public:
      bool empty() const { return (this->logical_size == 0); }   // test whether the array is empty
      size_t size() const { return this->logical_size; }  // return the logical size (number of items in the array)

      void enqueue(int element);
      int dequeue();

      void clear();  // remove all the items from the array
      ~DynamicArray() { this->clear(); }

   private:
      // this is a static C/C++ array containing the actual data
      // it is owned by the dynamic array
      int* values = nullptr;
      
      size_t logical_size = 0;  // how many data items are we actually storing?
      size_t capacity = 0;  // how much memory did we allocate?
      
      void resize(size_t new_capacity);  // shift to static array with increased/decreased capacity
   };
}