ruby/anagram (init)
ruby/anagram (#1)
ruby/anagram (#2) extracting methods
ruby/grade-school (init)
ruby/grade-school (#1)
ruby/grade-school (#2) remove internal structure exposure
ruby/proverb (init)
ruby/proverb (#1)
ruby/proverb (#2) extract methods
ruby/proverb (#3) small modification
ruby/space-age (init)
ruby/space-age (#1)
ruby/space-age (#2) fix to method_missing
ruby/space-age (#3) using define_method