public static void main(String args[]){
        int arr[] = {3,2,8,0,11,-1,-5,4,32,-60,44};
        IterativeQuickSort iqs = new IterativeQuickSort();
        iqs.sort(arr);
        for(int i=0; i < arr.length; i++){
            System.out.print(arr[i] + " ");
        }
    }
http://www.geeksforgeeks.org/iterative-quick-sort/
Test case
0,1 or more elements in the array
src/com/interview/sort/IterativeQuickSort.java