mirror of https://github.com/janet-lang/janet
15 lines
400 B
Plaintext
15 lines
400 B
Plaintext
# Return an array of primes. This is a trivial and extremely naive algorithm.
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(defn primes
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"Returns a list of prime numbers less than n."
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[n]
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(def list @[])
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(loop [i :range [2 n]]
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(var isprime? true)
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(def len (length list))
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(loop [j :range [0 len]]
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(def trial (get list j))
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(if (zero? (% i trial)) (:= isprime? false)))
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(if isprime? (array.push list i)))
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list)
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