RosettaCodeData/Task/Find-the-missing-permutation/Clojure/find-the-missing-permutatio...

10 lines
384 B
Clojure

(def abcds ["ABCD" "CABD" "ACDB" "DACB" "BCDA" "ACBD" "ADCB" "CDAB"
"DABC" "BCAD" "CADB" "CDBA" "CBAD" "ABDC" "ADBC" "BDCA"
"DCBA" "BACD" "BADC" "BDAC" "CBDA" "DBCA" "DCAB"])
(def freqs (->> abcds (apply map vector) (map frequencies)))
(defn v->k [fqmap v] (->> fqmap (filter #(-> % second (= v))) ffirst))
(->> freqs (map #(v->k % 5)) (apply str) println)