/// <summary>
        /// 遍历指定位数之间的所有组合
        /// </summary>
        /// <param name="minLength">最短位数</param>
        /// <param name="maxLength">最长位数</param>
        public static void testPassword(int minLength, int maxLength)
        {
            for (int i = minLength; i <= maxLength; i++)
            {
                long maxNum = (long)Math.Pow(62, i);
                for (long j = 0; j < maxNum; j++)
                {
                    Console.WriteLine(ConvertTo62(j, i));
                }
            }
        }