FizzBuzz example implementation

fizz_buzz.rb

class FizzBuzz
  def initialize(lower_bound,upper_bound)
    @lower_bound = lower_bound
    @upper_bound = upper_bound
  end
  def evaluate
    (@lower_bound..@upper_bound).map do |x|
      if (x % 5) == 0 && (x % 3) == 0
        "FizzBuzz"
      elsif (x % 5) == 0
        "Buzz"
      elsif (x % 3) == 0
        "Fizz"
      else
        x.to_s
      end
    end
  end
end
puts FizzBuzz.new(1,100).evaluate