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Perpetually confused.

Christopher Kruse ballpointcarrot

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Perpetually confused.
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@ballpointcarrot
ballpointcarrot / primes.rb
Created Apr 18, 2011
A comparison between the mathn library in Ruby and a self-built solution for prime generation.
View primes.rb
require 'mathn'
# Generates a list of primes below a given value
def primelist(n)
k = 1
a = [2,3]
while 6*k < n
a.push(6*k-1)
a.push(6*k+1)
k += 1
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