Kronecker product: Difference between revisions
Content added Content deleted
(→JS ES6: Changed top level of kprod to concatMap - a little cleaner) |
(→{{header|Haskell}}: (slight reformulation for fewer maps)) |
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:: Num a |
:: Num a |
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=> [[a]] -> [[a]] -> [[a]] |
=> [[a]] -> [[a]] -> [[a]] |
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kprod xs ys = |
kprod xs ys = |
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let f = fmap . fmap . (*) -- Multiplication by n over list of lists |
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where |
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in (concat <$>) . transpose =<< fmap (`f` ys) <$> xs |
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f = fmap . fmap . (*) |
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main :: IO () |
main :: IO () |
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[0,0,0,0,1,0,0,1,0,0,0,0] |
[0,0,0,0,1,0,0,1,0,0,0,0] |
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[0,0,0,0,1,1,1,1,0,0,0,0]</pre> |
[0,0,0,0,1,1,1,1,0,0,0,0]</pre> |
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=={{header|JavaScript}}== |
=={{header|JavaScript}}== |
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===Imperative=== |
===Imperative=== |
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