Dubstep

For example, a song with words "I AM X" can transform into a dubstep remix as "WUBWUBIWUBAMWUBWUBX" and cannot transform into "WUBWUBIAMWUBX".

移除字串中的 WUB，開頭和結尾不能有空白

Example

(song-decoder "WUBWEWUBAREWUBWUBTHEWUBCHAMPIONSWUBMYWUBFRIENDWUB")
  ; => WE ARE THE CHAMPIONS MY FRIEND

Solution

;; trim: remove white space from both start and end

(ns dubstep)

(defn song-decoder [song]
  (clojure.string/trim (clojure.string/replace song #"(WUB)+" " "))
)