using System;


namespace LocalMaximums
{
    class Program
    {
        private const string
            InitialArray = "Массив: ",
            LocalMaximumsText = "Локальные максимумы выделены красным: ",
            Separator = " ";
        private const int
            Min = 0, Max = 20, ArrayLength = 30;

        static void Main(string[] args)
        {
            int[] numbers = new int[ArrayLength];
            int[] maximums = new int[ArrayLength];

            Random random = new Random();

            for (int i = 0; i < ArrayLength; i++)
            {
                numbers[i] = random.Next(Min, Max);
            }

            for (int i = 0; i < ArrayLength; i++)
            {
                switch (i)
                {
                    case 0:
                        {
                            maximums[i] = numbers[i + 1] < numbers[i] ? 1 : 0;
                            break;
                        }
                    case ArrayLength - 1:
                        {
                            maximums[i] = numbers[i - 1] < numbers[i] ? 1 : 0;
                            break;
                        }
                    default:
                        {
                            maximums[i] = numbers[i - 1] < numbers[i] && numbers[i + 1] < numbers[i] ? 1 : 0;
                            break;
                        }
                }
            }

            Console.WriteLine(InitialArray);
            Console.WriteLine(string.Join(Separator, numbers));

            Console.WriteLine(LocalMaximumsText);

            for (int i = 0; i < ArrayLength; i++)
            {
                Console.ForegroundColor = maximums[i] == 0 ? ConsoleColor.Gray : ConsoleColor.Red;
                Console.Write(numbers[i] + Separator);
            }

            Console.ReadKey();
        }
    }
}