Diamond_Drawing

namespace ConsoleApp274
{
    using System;

    class Program
    {
        static void Main(string[] args)
        {
            int number = int.Parse(Console.ReadLine());
            int width = number * 2 - 1;
            int length = number;
            int intervals = number - 1;
            int innerLoopLength = width / 2;

            for (int i = 1; i <= number; i++)
            {
                Console.Write(new string(' ', intervals));
                for (int j = 1; j <= width - (intervals * 2); j++)
                {
                    if(j % 2 != 0)
                    {
                        Console.Write(new string('*', 1));
                    }
                    else
                    {
                        Console.Write(new string('_', 1));
                    }
                }
                intervals--;
                Console.WriteLine();
            }

            int secondPartLength = number - 1;
            intervals = 1;

            for (int i = 1; i <= secondPartLength; i++)
            {
                Console.Write(new string(' ', intervals));
                for (int j = 1; j <= width - (intervals * 2); j++)
                {
                    if (j % 2 != 0)
                    {
                        Console.Write(new string('*', 1));
                    }
                    else
                    {
                        Console.Write(new string('_', 1));
                    }
                }
                intervals++;
                Console.WriteLine();
            }
    }
}