palindromes.rb

def is_palindrome? whatsit
  str = whatsit.to_s.downcase.gsub(/ |[^\w\d]|\n/, '')
  str == str.reverse ? true : false
end

to_check = [
  "a man, a plan, a canal: panama",
  "Mr. Owl Ate My Metal Worm",
  909,
  100,
  "sup jamal",
  "racecar
  racecar"
]

to_check.each do |checker|
  if is_palindrome? checker
    puts "a palindrome: #{checker}"
  else
    puts "not a palindrome: #{checker}"
  end
end

http://blog.codecrewny.org/post/42596443983/code-crew-code-challenge-1