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deque-blog/intro-clojure-average-recur.clj

Last active April 30, 2017 14:25
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intro-clojure-average-recur.clj
(defn sum
[coll]
(loop [total 0
coll coll]
(if (not-empty coll)
(recur (+ total (first coll)) (rest coll))
total)))
(defn average
[coll]
(/ (sum coll) (count coll)))
(sum [1 2 4 5])
=> 12
(average [1 2 4 5])
=> 3
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