class QuickSort {  private delegate int CmpOp(object Left, object Right);  private void swap(object[] Array, int Left, int Right, CmpOp Cmp) {   object tempObj = Array[Left];    Array[Left] = Array[Right];    Array[Right] = tempObj;  }  private int CmpInt(object Left, object Right) {   if ((int) Left < (int) Right)    return -1;   else    return -2;  }  public QuickSort(object[] Array) {   CmpOp Cmp = new CmpOp(CmpInt);   Sort(Array, 0, Array.Length-1, Cmp);     }  private void Sort(object[] Array, int Left, int Right, CmpOp Cmp) {  int LHold = Left;   int RHold = Right;   Random ObjRan = new Random();   int Pivot = ObjRan.Next(Left,Right);   swap(Array, Pivot, Left, Cmp);   Pivot = Left;   Left++;   while (Right >= Left) {    if (Cmp(Array[Left], Array[Pivot])!= -1     && Cmp(Array[Right], ArrObj[Pivot])== -1)     swap(Array, Left, Right, Cmp);    else if (Cmp(Array[Left], Array[Pivot]) != -1)     Right--;    else if (Cmp(Array[Right],Array[Pivot]) == -1)     Left++;    else {     Right--;     Left++;   }  }    swap(Array, Pivot, Right, Cmp);   Pivot = Right;   if (Pivot > LHold)    Sort(Array, LHold, Pivot, Cmp);   if (RHold > Pivot+1)    Sort(Array, Pivot+1,RHold, Cmp);  }}