Hi, I started learning clojure for a few months and this is what I have for
the problem, and I find it running very slow if exceeding 100k trials, maybe
it's because of using set? Any feedbacks will be appreciated. thx
(require '[clojure.set :as set])
(def doors #{:a :b :c})
(defn rand-nth-set [s]
(conj #{} (rand-nth (seq s))))
(defn play
([] (play nil))
([switch?]
(let [prize-door (rand-nth-set doors)
picked-door (rand-nth-set doors)
empty-doors (set/difference doors prize-door)
opened-door (rand-nth-set (set/difference empty-doors picked-door))
picked-door (if switch?
(set/difference doors opened-door picked-door)
picked-door)]
(= picked-door prize-door))))
(count (remove #(false? %) (repeatedly 10000 #(play true))))
(count (remove #(false? %) (repeatedly 10000 #(play false))))
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