ДЗ: Максимум

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

namespace Maximus
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] array = new int[30] { 1, 9, 2, 8, 3, 7, 4, 6, 6, 0,
                1, 23, 56, 78, 54, 32, 83, 10, 20, 999,
                92, 19, 33, 48, 59, 28, 43, 15, 12, 12 };

            Console.Write("Локальные максимумы: ");
            if (array[0] >= array[1]) Console.Write("{0} ", array[0]);

            for (int i = 0; i < array.Length - 2; i++)
            {
                if ((array[i + 1] >= array[i]) && (array[i + 1] >= (array[i + 2]))) Console.Write("{0} ", array[i + 1]);
            }

            if (array[array.Length - 1] >= array[array.Length - 2]) Console.Write("{0} ", array[array.Length - 1]);
        }
    }
}