For SOA fizzbuzz homework

fizzbuzz.rb

def fizzbuzz(num, &strategy)
  arr = []
  1.upto(num) do |i|
    if i % 5 == 0 and i % 3 == 0
      arr.push("FizzBuzz")
      if strategy
        yield 'FizzBuzz'
      end
    elsif i % 3 == 0
      arr.push("Fizz")
      if strategy
        yield 'Fizz'
      end
    elsif i % 5 == 0
      arr.push("Buzz")
      if strategy
        yield 'Buzz'
      end
    else
      arr.push(i)
      if strategy
        yield i
      end
    end
  end
  arr
end