using System;

public class Program

{

    public static void Main()

    {

        foreach(var s in fizzBuzz(5, 20))

        {

            Console.WriteLine(s);

        }

    }

    public static String[] fizzBuzz(int start, int end) {

      String[] arr = new String[end - start];

​

      for (int i = 0; i < arr.Length; i++, start++)

      {

          String st = "";

​

          if (start % 3 == 0) st += "Fizz";

          if (start % 5 == 0) st += "Buzz";

          if (st == "") st += start;

​

          arr[i] = st;

      }

​

      return arr;

    }

}