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By: a guest on Apr 18th, 2012  |  syntax: None  |  size: 0.28 KB  |  hits: 10  |  expires: Never
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  1. ;; uochan's solution to http://4clojure.com/problem/53
  2.  
  3. (fn [coll]
  4.   (let [inc-seq? (fn [x] (every?  #(= -1 %) (map #(apply - %) (partition 2 1 x))))
  5.         ls (filter inc-seq? (mapcat (fn [n] (partition n 1 coll)) (range 1 (count coll))))]
  6.     (if (-> ls last count (= 1)) () (last ls))))
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