def fizzbuzz(size, &strategy)
  arr = []
  (1..size).each do |num|
    input = num
    input = 'Fizz' if (num % 3).zero?
    input = 'Buzz' if (num % 5).zero?
    input = 'FizzBuzz' if (num % 15).zero?
    arr << input
  end
  arr.each { |item| yield item } if strategy
  arr
end