Shopify asked me to send them a message so I created the best cover letter ever!!!

fish_cypher.rb

quote = 'The last ever dolphin message was misinterpreted as a surprisingly sophisticated attempt to do a double-backwards-somersault through a hoop whilst whistling the ‘Star Spangled Banner’, but in fact the message was this: So long and thanks for all the fish.'
alphabet = ('a'..'z').to_a
offset = 5
result_quote = ''

quote.each_char do |char|
  if alphabet.include?(char)
    char = alphabet.rotate(alphabet.index(char))[offset]
  elsif alphabet.include?(char.downcase)
    char = alphabet.rotate(alphabet.index(char.downcase))[offset].upcase
  end
  result_quote << char
end

puts quote
puts result_quote