/// <summary>
        /// 对一个字符串进行倒序排列
        /// </summary>
        /// <param name="ReverseString">要排列的字符串</param>
        /// <returns>倒序后的字符串</returns>
        public static string Reverse(string ReverseString)
        {
            String output = string.Empty;
            for (int i = ReverseString.Length; i > 0; i--)
            {
                output += ReverseString.Substring(i - 1, 1);
            }
            return output;
        }
//csharp/801