using System;

using System.Collections.Generic;

using System.Configuration;

using System.Collections.Specialized;

using System.Linq;

using System.Text;

using System.Threading;

using System.Threading.Tasks;

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//Lottery Generator with multiple numbers (variable)

​

​

namespace Lottery

{

    public class Program

    {

        public static Random random;

        public static void Main()

        {

​

​

            random = new Random((int)DateTime.Now.Ticks);

​

​

            Console.WriteLine("Lottery Contest");

​

            Console.WriteLine(" ");

            Console.WriteLine("Enter FIRST ticket number");

            int startingNumber = Convert.ToInt32(Console.ReadLine());

​

            Console.WriteLine(" ");

            Console.WriteLine("Enter LAST ticket number");

            int endingNumber = Convert.ToInt32(Console.ReadLine());

​

            Console.WriteLine(" ");

            Console.WriteLine("Enter how many tickets to draw");

            int numberOfWinningTickets = Convert.ToInt32(Console.ReadLine());

            //IMPORTANT

            //Start Value, How many to count

            var ticketNumbers = Enumerable.Range(startingNumber, endingNumber).ToList();

​

            Console.WriteLine(" ");

            Console.WriteLine("{0} lottery tickets will be selected from random numbers between {1} and {2}", numberOfWinningTickets, startingNumber, endingNumber);

​

            Console.WriteLine(" ");

            Console.WriteLine("------------ ");

            Console.WriteLine(" ");

            Console.WriteLine("Gift | Ticket");

​

​

            int[] SelectedNumbers = new int[numberOfWinningTickets];

​

            for (var i = 0; i < numberOfWinningTickets; i++)

            {

                var number = GetNumber(ticketNumbers.ToArray());

​

                while (SelectedNumbers.Contains(number))

                {

                    number = GetNumber(ticketNumbers.ToArray());

                }

​

                SelectedNumbers[i] = number;

​

                //Gift override

                //IMPORTANT - Left value is for the gift -1

                SelectedNumbers[9] = 150;

                SelectedNumbers[11] = 160;

                SelectedNumbers[13] = 170;

​

                Console.WriteLine("{0} | {1}", i + 1, SelectedNumbers[i]);

​

            }

​

            //Console.WriteLine("Ticket Numbers: " + string.Join(" ", SelectedNumbers));

​

            Thread.Sleep(-1);

​

        }

​

        //Removes numbers from the array until only one is left, and returns it

        public static int GetNumber(int[] arr)

        {

            if (arr.Length > 1)

            {

                //Remove random number from array

                var r = random.Next(0, arr.Length);

                var list = arr.ToList();

                list.RemoveAt(r);

​

                return GetNumber(list.ToArray());

            }

​

            return arr[0];

        }

    }

}