选择排序

for (int j = 0; j < dlt.Length;j++ )//min在走
        {
            min = dlt[j];
            int minxb=j;
            for (i = j; i < dlt.Length; i++)
            {
                if (dlt[i] < min)
                {
                    min = dlt[i];
                    minxb = i;
                }
            }
            //换值
            int temp;
            temp = dlt[j];//把我的值存起来
            dlt[j] = dlt[minxb];//这样你可以把值拿过来
            dlt[minxb] = temp;//再从temp取回来