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Ingy döt Net 2013-04-11 01:07:29 -07:00
parent b83f433714
commit 68f8f3e56b
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14
Task/Sorting-algorithms-Merge-sort/Clojure/sorting-algorithms-merge-sort.clj Normal file
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(defn merge* [left right]
(cond (nil? left) right
(nil? right) left
true (let [[l & *left] left
[r & *right] right]
(if (<= l r) (cons l (merge* *left right))
(cons r (merge* left *right))))))
(defn merge-sort [L]
(let [[l & *L] L]
(if (nil? *L)
L
(let [[left right] (split-at (/ (count L) 2) L)]
(merge* (merge-sort left) (merge-sort right))))))