diff options
-rw-r--r-- | Math.hs | 15 |
1 files changed, 8 insertions, 7 deletions
@@ -1,9 +1,10 @@ module Math where - isPrime :: Int -> Bool - factors :: Int -> [Int] - intersect' :: [Int] -> [Int] -> [Int] - isPrime n = (length [ x | x <- [2..(ceiling $ sqrt $ fromIntegral 2)], - n `mod` x == 0]) == 0 - factors n = [x | x <- [1..(n `div` 2)], n `mod` x == 0] ++ [n] - intersect' a b = [x | x <- a, x `elem` b] +isPrime :: Int -> Bool +isPrime n = (length [ x | x <- [2..(ceiling $ sqrt $ fromIntegral 2)], + n `mod` x == 0]) == 0 +factors :: Int -> [Int] +factors n = [x | x <- [1..(n `div` 2)], n `mod` x == 0] ++ [n] + +intersect' :: [Int] -> [Int] -> [Int] +intersect' a b = [x | x <- a, x `elem` b] |