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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Population-count/Miranda/population-count.miranda Normal file
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main :: [sys_message]
main = [Stdout (lay (map (show . take 30) [powers_of_3, evil, odious]))]
powers_of_3 :: [num]
powers_of_3 = map (popcount . (3^)) [0..]
evil :: [num]
evil = filter f [0..] where f n = popcount n mod 2 = 0
odious :: [num]
odious = filter f [0..] where f n = popcount n mod 2 = 1
popcount :: num -> num
popcount 0 = 0
popcount n = n mod 2 + popcount (n div 2)