Contents

(ns run-length-encoding)

(defn run-length-encode 
  "encodes a string with run-length-encoding"
  [s]
  (apply str
         (for
           [ x (partition-by identity s)]
           (str
             (when-not (= 1 (count x)) (count x)) (first x)))))

(defn run-length-decode 
  "decodes a run-length-encoded string"
  [s]
  (->> s
       (re-seq #"[0-9]+.|[a-zA-Z\s]")
       (map #(if (= (count %) 1) (str "1" %) %))
       (map #(list (Integer. (reduce str "" (butlast %))) (str (last %))))
       (map #(apply str (repeat (first %) (second %))))
       (reduce str)))

Version data entries

121 entries across 121 versions & 1 rubygems

Version	Path
trackler-2.2.1.98	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.97	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.96	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.95	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.94	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.93	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.92	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.91	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.90	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.89	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.88	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.87	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.86	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.85	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.84	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.83	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.82	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.81	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.80	tracks/clojure/exercises/run-length-encoding/src/example.clj
trackler-2.2.1.79	tracks/clojure/exercises/run-length-encoding/src/example.clj