Humble numbers: Difference between revisions
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(→{{header|Haskell}}: Redefined humbles in terms of Data.Set) |
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=={{header|Haskell}}== |
=={{header|Haskell}}== |
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<lang haskell>import Data. |
<lang haskell>import Data.Set (deleteFindMin, fromList, union) |
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import Control.Arrow ((&&&)) |
import Control.Arrow ((&&&)) |
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import Data.List (group) |
import Data.List (group) |
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import Data.Bool (bool) |
import Data.Bool (bool) |
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----------------------HUMBLE NUMBERS----------------------- |
----------------------HUMBLE NUMBERS----------------------- |
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humbles :: [Integer] |
humbles :: [Integer] |
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humbles = |
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| ⚫ | |||
let go sofar = x : go (union pruned $ fromList ((x *) <$> [2, 3, 5, 7])) |
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where |
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(x, pruned) = deleteFindMin sofar |
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in go $ fromList [1] |
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| ⚫ | |||
---------------------------TEST---------------------------- |
---------------------------TEST---------------------------- |
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main :: IO () |
main :: IO () |
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mapM_ (putStrLn . concat) $ |
mapM_ (putStrLn . concat) $ |
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chunksOf 10 $ (justifyRight 4 ' ' . show) <$> take 50 humbles |
chunksOf 10 $ (justifyRight 4 ' ' . show) <$> take 50 humbles |
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putStrLn "\nCount of humble numbers for each digit length 1- |
putStrLn "\nCount of humble numbers for each digit length 1-20:" |
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mapM_ print $ take |
mapM_ print $ take 20 $ (head &&& length) <$> group (digitCount <$> humbles) |
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digitCount :: Integer -> Int |
digitCount :: Integer -> Int |
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81 84 90 96 98 100 105 108 112 120 |
81 84 90 96 98 100 105 108 112 120 |
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Count of humble numbers for each digit length 1- |
Count of humble numbers for each digit length 1-20: |
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(1,9) |
(1,9) |
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(2,36) |
(2,36) |
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| Line 709: | Line 712: | ||
(4,197) |
(4,197) |
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(5,356) |
(5,356) |
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(6,579) |
(6,579) |
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(7,882) |
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(8,1272) |
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(9,1767) |
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(10,2381) |
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(11,3113) |
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(12,3984) |
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(13,5002) |
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(14,6187) |
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(15,7545) |
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(16,9081) |
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(17,10815) |
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(18,12759) |
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(19,14927) |
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(20,17323)</pre> |
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=={{header|Julia}}== |
=={{header|Julia}}== |
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