ruby/palindrome-products (init)
ruby/palindrome-products (#1)
ruby/palindrome-products (#2) faster
ruby/pascals-triangle (init)
ruby/pascals-triangle (#1) recursive
ruby/pascals-triangle (#2) improved
ruby/pascals-triangle (#3) refactoring
ruby/say (init)
ruby/say (#1)
ruby/say (#2) refactoring
ruby/meetup (init)
ruby/meetup (#1)