ArraySorter.h

#pragma once

#include <ostream>

class ArraySorter
{
private:
    int* fArrayOfNumbers;
    unsigned int fArraySize;
    
protected:
    
    // service member function to be called once a sorting step has been finished
    void stepCompleted( std::ostream& aOStream );
    
    // swap elements in the underlying array
    void swapElements( unsigned int aSourcIndex, unsigned int aTargetIndex );
    
public:
    // array sorter constructor
    ArraySorter( const int aArrayOfNumbers[], unsigned int aArraySize );

    // array sorter destructor
    virtual ~ArraySorter();
    
    // return array element at index
    const unsigned int at( unsigned int aIndex ) const;

    // return size of underlying array
    const unsigned int getRange() const;
    
    // polymorphic sort function (takes an output stream to call stepCompleted)
    virtual void sort( std::ostream& aOStream );

    // output operator for array sorters
    friend std::ostream& operator<<( std::ostream& aOStream, const ArraySorter& aObject );
};