Быстрая сортировка в С++

private static int partition( int[] items, int lo, int hi ) 
{
    int destination = lo;
    swop( items, (hi + lo) >>> 1, hi );
    // The pivot is now stored in items[ hi ].
    for (int index = lo; index != hi; index ++) 
    {
        if (items[ hi ] >= items[ index ]) 
        {
            // Move current item to start.
            swop( items, destination, index );
            destination ++;
        }
 
        // items[ i ] <= items[ hi ] if lo <= i < destination.
        // items[ i ] > items[ hi ] if destination <= i <= index.
    }
 
    // items[ i ] <= items[ hi ] if lo <= i < destination.
    // items[ i ] > items[ hi ] if destination <= i < hi.
    swop( items, destination, hi );
    // items[ i ] <= items[ destination ] if lo <= i <= destination.
    // items[ i ] > items[ destination ] if destination < i <= hi.
    return destination;
}

// This program demonstrates the QuickSort Algorithm.
#include <iostream>
#include <algorithm>
using namespace std;
 
 
 
 
//**********************************************************
// partition selects the value in the middle of the        *
// array set as the pivot. The list is rearranged so       *
// all the values less than the pivot are on its left      *
// and all the values greater than pivot are on its right. *
//**********************************************************
 
template <class T1>
int partition(T1 set[], int start, int end)
{
   int pivotValue, pivotIndex, mid;
 
   mid = (start + end) / 2;
   swap(set[start], set[mid]);
   pivotIndex = start;
   pivotValue = set[start];
   for (int scan = start + 1; scan <= end; scan++)
   {
      if (set[scan] < pivotValue)
      {
         pivotIndex++;
         swap(set[pivotIndex], set[scan]);
      }
   }
   swap(set[start], set[pivotIndex]);
   return pivotIndex;
}
 
//************************************************
// quickSort uses the quicksort algorithm to     *
// sort set, from set[start] through set[end].   *
//************************************************
 
template <class T>
void quickSort(T set[], int start, int end)
{
   T pivotPoint;
 
   if (start < end)
   {
      // Get the pivot point.
      pivotPoint = partition(set, start, end);
      // Sort the first sub list.
      quickSort(set, start, pivotPoint - 1);
      // Sort the second sub list.
      quickSort(set, pivotPoint + 1, end);
   }
}
//**********************************************
// swap simply exchanges the contents of       *
// value1 and value2.                          *
//**********************************************
 
template <class T>
void swap(T &value1, T &value2)
{
   int temp = value1;
 
   value1 = value2;
   value2 = temp;
}
 
int main()
{
   const int SIZE = 10;  // Array size
   int count;            // Loop counter
 
   // need to override the [] function?
   int array[SIZE] = {7, 3, 9, 2, 0, 1, 8, 4, 6, 5};
 
   // Display the array contents.
   for (count = 0; count < SIZE; count++)
      cout << array[count] << " ";
   cout << endl;
 
   // Sort the array.
   quickSort(array, 0, SIZE - 1);
 
   // Display the array contents.
   for (count = 0; count < SIZE; count++)
      cout << array[count] << " ";
   cout << endl;
   return 0;
}