CodeKata - RangeExtraction

RangeExtraction.cs

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


/// <summary>
/// https://www.codewars.com/kata/51ba717bb08c1cd60f00002f
/// </summary>

namespace RangeExtraction
{
    class Program
    {
        static void Main(string[] args)
        {

            Extract(new[] { 1, 2 });

        }

        public static string Extract(int[] args)
        {
            string answer = "";
            int start;
            int end;
            for (int i = 0; i < args.Count(); i++)
            {
                if (i == args.Count() - 1)
                {
                    answer += $"{args[i]}";
                    Console.WriteLine($"Answer: {answer}");
                    Console.ReadKey();
                    return answer;
                }
                if (args[i] == (args[i + 1] - 1))
                {
                    start = args[i];
                    try
                    {
                        while (args[i] == (args[i + 1] - 1))
                        {
                            i++;
                        }
                        end = args[i];

                        if (end - start > 1)
                        {
                            answer += $"{start}-{end},";
                        }
                        else
                        {
                            for (int n = start; n <= end; n++)
                            {
                                answer += $"{n},";
                            }
                        }
                    }
                    catch (IndexOutOfRangeException)
                    {
                        end = args[i];

                        if (end - start > 1)
                        {
                            answer += $"{start}-{end}";
                        }
                        else
                        {
                            for (int n = start; n <= end; n++)
                            {
                                if (n == end)
                                {
                                    answer += $"{n}";
                                }
                                else
                                {
                                    answer += $"{n},";
                                }
                            }
                        }
                        return answer;
                    }
                }
                else
                {
                    answer += $"{args[i]},";
                }
            }
            return answer;
        }
    }
}