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Initial data commit

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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 72d218235f
commit f23f22d71c
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6
Task/Greatest-common-divisor/Clojure/greatest-common-divisor-1.clj Normal file
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(defn gcd
"(gcd a b) computes the greatest common divisor of a and b."
[a b]
(if (zero? b)
a
(recur b (mod a b))))

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Task/Greatest-common-divisor/Clojure/greatest-common-divisor-2.clj Normal file
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(defn gcd*
"greatest common divisor of a list of numbers"
[& lst]
(reduce gcd
lst))

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Task/Greatest-common-divisor/Clojure/greatest-common-divisor-3.clj Normal file
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(defn stein-gcd [a b]
(cond
(zero? a) b
(zero? b) a
(and (even? a) (even? b)) (* 2 (stein-gcd (unsigned-bit-shift-right a 1) (unsigned-bit-shift-right b 1)))
(and (even? a) (odd? b)) (recur (unsigned-bit-shift-right a 1) b)
(and (odd? a) (even? b)) (recur a (unsigned-bit-shift-right b 1))
(and (odd? a) (odd? b)) (recur (unsigned-bit-shift-right (Math/abs (- a b)) 1) (min a b))))