beef

# Add this to your gem file

group :production do
  gem 'dalli'
  gem 'rack-cache', :require => 'rack/cache'
  gem 'rack-contrib', :require => 'rack/contrib'
end

ryanong

def compare_strings(str1,str2)
  str1.downcase! 
  pairs1 = (0..str1.length-2).collect {|i| str1[i,2]}.reject { |pair| pair.include? " "}

  str2.downcase! 
  pairs2 = (0..str2.length-2).collect {|i| str2[i,2]}.reject { |pair| pair.include? " "}

  union = pairs1.size + pairs2.size 
  intersection = 0