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September 2017 Update

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Ingy döt Net 2017-09-23 10:01:46 +02:00
parent bba7bfd280
commit ba8067c3b7
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Task/Narcissistic-decimal-number/Clojure/narcissistic-decimal-number.clj Normal file
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(ns narcissistic.core
(:require [clojure.math.numeric-tower :as math]))
(defn digits [n] ;; digits of a number.
(->> n str (map (comp read-string str))))
(defn narcissistic? [n] ;; True if the number is a Narcissistic one.
(let [d (digits n)
s (count d)]
(= n (reduce + (map #(math/expt % s) d)))))
(defn firstNnarc [n] ;;list of the first "n" Narcissistic numbers.
(take n (filter narcissistic? (range))))