static void Step3550()
 {
     Console.WriteLine();
     Console.WriteLine("3550");
     int[] in3550 = { 2, 3, -13, 0, 7, 11, 1027 };
     for (int i = 0; i < in3550.Length; i++)
     {
         StringBuilder sb3550 = Lab06.Task3550(
             new StringBuilder()
             .Append("@"), in3550[i])
                                .Append("#");
         Console.WriteLine(sb3550.ToString());
     }
 }