RosettaCodeData/Task/100-doors/Clojure/100-doors-2.clj
2013-04-10 14:23:37 -07:00

13 lines
434 B
Clojure

(defn doors []
(reduce (fn [doors toggle-idx] (update-in doors [toggle-idx] not))
(into [] (repeat 100 false))
(for [pass (range 1 101)
i (range (dec pass) 100 pass) ]
i)))
(defn open-doors [] (for [[d n] (map vector (doors) (iterate inc 1)) :when d] n))
(defn print-open-doors []
(println
"Open doors after 100 passes:"
(apply str (interpose ", " (open-doors)))))