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podviaznikov/pascaltriangle.clj

Last active December 28, 2015 17:08
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pascaltriangle.clj
(defn pascaltriangle-iter [row col]
(if (or (= col 1) (= col row))
1
(+
(pascaltriangle-iter (- row 1) (- col 1))
(pascaltriangle-iter (- row 1) col))))
(defn pascaltriangle-row [row]
(for [i (range 1 (+ 1 row))]
(pascaltriangle-iter row i)))
(defn pascaltriangle [n]
(doall (for [i (range 1 (+ 1 n))]
(pascaltriangle-row i))))
(if (or (= col 1) (= col row))
1
(+
(pascaltriangle-iter (- row 1) (- col 1))
(pascaltriangle-iter (- row 1) col))))
(defn pascaltriangle [n]
(doall (for [i (range 1 (+ 1 n))]
(pascaltriangle-row i))))
(pascaltriangle 6)
;((1) (1 1) (1 2 1) (1 3 3 1) (1 4 6 4 1) (1 5 10 10 5 1))
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