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joshrotenberg/diag.clj

Created June 25, 2019 13:11
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diag.clj
(def input [[1 2 3] [4 5 6] [9 8 9]])
(defn diag-diff2
[arr]
(->> arr
(map-indexed (fn [i e] [(nth e i) (nth e (- (count arr) i 1))]))
(reduce (fn [acc [x y]] [(+ (first acc) x) (+ (second acc) y)]))
(reduce -)
Math/abs))
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