Data Structures, Algorithms, & Applications in C++
Chapter 5, Exercise 13

The code is given below and in the file arrayListWithSwap.h. Test code is included in arrayListWithSwap.cpp. The function name has been changed to swap1 because the C++ compiler couldn't dismabiguate the newly defined function and the standard two parameter swap function of C++. 
template<class T>
class arrayListWithSwap : public arrayList<T> 
{
   public:
      // constructor and destructor
      arrayListWithSwap(int initialCapacity = 10)
           : arrayList<T> (initialCapacity) {}

      void swap1(arrayListWithSwap<T>& theList);
};

template<class T>
void arrayListWithSwap<T>::swap1(arrayListWithSwap<T>& theList)
{// Swap the two lists.

   swap(arrayLength, theList.arrayLength);
   swap(listSize, theList.listSize);
   swap(element, theList.element);
}