## Mission FizzBuzz
def fizzbuzz(num)
  arr = [*1..num]
  arr.map! do |n|
    if (n % 15).zero? then 'FizzBuzz'
    elsif (n % 3).zero? then 'Fizz'
    elsif (n % 5).zero? then 'Buzz'
    else n
    end
  end
  arr.each { |item| yield(item) } if block_given?
  arr
end