On Thu, Jul 9, 2009 at 7:31 AM, Patrik Fredriksson<patri...@gmail.com> wrote: > > My shot at a Clojure implementation, with inspiration from a previous > post in this group on a similar problem: > > (ns step3.pnehm.clojure-orderer > (:gen-class > :name step3.pnehm.ClojureOrderer > :implements [pnehm.Orderer] > ))
Nice to see you're not intimidated by gen-class. :-) > (defn cmpr [[val1 freq1] [val2 freq2]] > (let [freq (compare freq2 freq1)] > (if (not= freq 0) freq (compare val1 val2)))) When testing for equality with zero, it's more idiomatic and sometimes faster to use 'zero?', so perhaps: (if-not (zero? freq) freq (compare val1 val2)) > (defn -orderByFreq [_ coll] > (if (empty? coll) () (keys (sort cmpr (count-words coll))))) Do you need to return an empty seq? If not, how about: (when (seq coll) (keys (sort cmpr (count-words coll)))) --Chouser --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~----------~----~----~----~------~----~------~--~---
