插入排序

        public void sort()
        {
            for (int i = 1; i < ement; i++)
            {
                int os=a[i];
                int tem=i;
                for (;tem > 0 && os < a[tem - 1];--tem)
                {
                    a[tem] = a[tem - 1];
                }
                a[tem] = os;
            }
        }