Created
November 4, 2014 22:45
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double every second element of the list
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| -- | |
| -- I didn't check the exercise, can we use take, double and drop? | |
| -- | |
| double :: Num a => [a] -> [a] | |
| double [] = [] | |
| double (x:xs) = [2*x] ++ take 1 xs ++ double (drop 1 xs) |
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