Ivan

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ArrayLocalMax
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] array = { 9, 5, 4, 3, 4, 5, 3, 4, 5, 4, 5, 4, 3, 7, 8, 9, 7, 6, 7, 6, 4, 6, 4, 5, 3, 5, 3, 5, 3, 9 };

            for (int i = 0; i < array.Length; i++)
            {
                if (i != 0 && (array.Length -1) != i)
                {
                    if (array[i] > array[i - 1] && array[i] > array[i + 1])
                    {
                        Console.Write(array[i] + " ");
                    }
                }
                else if(i == 0)
                {
                    if (array[i] > array[i + 1])
                    {
                        Console.Write(array[i] + " ");
                    }
                }
                else
                {
                    if (array[i] > array[i - 1])
                    {
                        Console.Write(array[i] + " ");
                    }
                }
            }
        }
    }
}