精簡代碼-快速排序

 

protected void Button2_Click(object sender, EventArgs e)
   

{
       

        string res_arr = string.Empty;

        QuickSort(arr_list, 0, arr_list.Length-1);

        foreach(int i in arr_list)

        {

            res_arr += i + ",";

        }

        Response.Write(res_arr + "<br/>");

        Response.Write(count);

}

 

private void QuickSort(int[] n,int left,int right)

{

        int i = left,j = right,tem;

        tem = n[left];

        while(i < j)

        {

            while (n[j] > tem && i < j)

            {

                --j;

                ++count;

            }

            n[i] = n[j];

            while (n[i] <= tem && i < j)

            {

                ++i;

                ++count;

            }

            n[j] = n[i];

            ++count;

        }

        n[i] = tem;

        if (i - 1 > left) QuickSort(n,left,i-1);

        if (right > i + 1) QuickSort(n,i+1,right);

}