Hey Aria,
Here's my (not functional) but reasonably fast (Knuth) shuffle I've
been using.
(defn random-permutation [s]
"Return a random permutation of this seq."
(let [arr (to-array s) len (alength arr)]
(dotimes [i (dec len)]
(let [r (+ i (rand-int (- len i))),
prev (aget arr i)]
(aset arr i (aget arr r))
(aset arr r prev)))
(seq arr)))
-Jason
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