On Fri, Jan 10, 2014 at 11:52 AM, Colin Yates <[email protected]> wrote:
> way to take the wind out of our sails! Well spotted :).
It's not too hard to fix. Here's an adapted version of Jonas' solution
that should do the trick:
(defn uniqueify [items]
(first
(reduce (fn [[results count-map] item]
(let [n (count-map item 0)]
(if (zero? n)
[(conj results item) (assoc count-map item (inc n))]
(recur [results (assoc count-map item (inc n))]
(str item \_ n)))))
[[] {}]
items)))
=> (uniqueify ["a" "a" "a" "a" "b" "a_2" "a_3" "a_3_1" "a_3_1" "a"])
["a" "a_1" "a_2" "a_3" "b" "a_2_1" "a_3_1" "a_3_1_1" "a_3_1_2" "a_4"]
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