using System;

public class Program

{

    static int[] FindTheSecond(int[] ar)

    {

      Array.Sort(ar);

      return ar;

    }

    public static void Main()

    {

        int[] b={1,5,12,4,3,23,29}; //example

        FindTheSecond(b);

        Console.WriteLine("The second maximum of a fixed length array of integers:{0}",b[b.Length-2]);

    }

}