The challenge was to create a method that returned an array of numbers from 1 to 1000 but with each number that included 5 as a factor replaced with "Fizz", each number that included 7 as a factor replaced with "Blam" and each number that included both 5 and 7 as factors replaced with "FizzBlam". The additional challenge was to do it in one line…

fizzblam.rb

def fizzblam
  arr = (1..1000).to_a.map { |elem| [("Fizz" if (elem % 5).zero?), ("Buzz" if (elem % 7).zero?), (elem unless ((elem % 5).zero?) || ((elem % 7).zero?))].compact.join }
end

#another way to do it using string interpolation

def fizzblam
  arr = (1..1000).to_a.map { |elem| "#{'Fizz' if elem % 3 == 0}#{'Buzz' if elem % 5 == 0}#{elem unless elem % 3 == 0 || elem % 5 == 0}"
end