> On Feb 17, 2015, at 4:39 PM, Colin Jones <trptco...@gmail.com> wrote:
>
> Sounds almost like a mirror image of `clojure.core/take-nth`, so something
> like this is kind of fun:
>
> (defn drop-nth [n coll]
> (lazy-seq
> (when-let [s (seq coll)]
> (concat (take (dec n) s) (drop-nth n (drop n s))))))
>
I like that drop-nth. Here's my version of lucky:
(defn lucky
"Returns sequence of Lucky numbers less than max"
([max] (when (pos? max) (lucky 1 (range 1 max 2))))
([i acc]
(if-let [n (nth acc i nil)]
(recur (inc i) (drop-nth n acc))
acc)))
The recur in this case loops back to the top.
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