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Diffstat (limited to '31-41/31.hs')
| -rw-r--r-- | 31-41/31.hs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/31-41/31.hs b/31-41/31.hs new file mode 100644 index 0000000..d6d53a9 --- /dev/null +++ b/31-41/31.hs @@ -0,0 +1,4 @@ +isPrime :: Int -> Bool + +isPrime 1 = False +isPrime x = and $ map (\y -> x `mod` y /= 0) $ fst $ span (\y -> y * y <= x) [2..] |