using System;

using System.Collections.Generic;

using System.Text;

​

public class Program

{

    public static void Main()

    {

        int count = 1;

        foreach(var number in Program.GetRandomNumbers(5))

        {

            Console.WriteLine("Number " + count + ":" + number);

            count++;

        }

    }

    public static List<int> GetRandomNumbers(int count)

    {

        List<int> randomNumbers = new List<int>(); 

        Random random = new Random();

​

        for (int i=0; i<count; i++) 

        {    

            int number;

​

            do number = random.Next();

            while (checkNumberListContainsNumber(randomNumbers, number));

​

            randomNumbers.Add(number);

            Console.Write(string.Format("Adding Number {0}", number));

        }

        StringBuilder finalconsoleOutput = new StringBuilder();

        finalconsoleOutput.Append("Finished.");

        finalconsoleOutput.Append("Count: ");

        finalconsoleOutput.Append(" : " + count);

        finalconsoleOutput.Append($"Random Numbers: {randomNumbers}");

        Console.WriteLine(finalconsoleOutput.ToString());

        return randomNumbers;

    }

    public static bool checkNumberListContainsNumber (List<int> randomNumbers, int number)

    {

        return randomNumbers.Contains(number);

    }

}