fizzbuzz.rb

=begin
The normal way:

def fizzbuzz(first, last)
  first.upto(last) do |i|
    if dividesby?(i,3) && dividesby?(i,5)
      puts "FizzBuzz"
    elsif dividesby?(i,3)
      puts "Fizz"
    elsif dividesby?(i,5)
      puts "Buzz"
    else
      puts i
    end
  end
end


# fizzbuzz(1, 100)
# Or we can do it like this:
=end

def divides_by?(dividend, divisor)
  dividend % divisor == 0
end

def fizzbuzz(first=1, last=100, fizz_value=3, fizz_string="Fizz", buzz_value=5, buzz_string="Buzz")
  # I used #map so that we can save the transformed array in a variable if we want.
  (first..last).map do |x|
    fizz = fizz_string if divides_by?(x, fizz_value) 
    buzz = buzz_string if divides_by?(x, buzz_value)
    # (recall that, in Ruby, nil is falsey and strings are truthy)
    (fizz || buzz) ? [fizz, buzz].join : x
  end
end

# I took the puts out of the method so printing all those lines is intentional, not a side effect.

puts fizzbuzz

# fizzbuzz(12, 60, 4, "Vladimir ", 6, "Putin")