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rotate function in haskell from mid-term 2010 exam
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| rotate x n | |
| | n == 0 = x | |
| | n >= (length x) = rotate x (mod n (length x)) | |
| | otherwise = rotate (tail x) (n-1) ++ [head x] | |
| list = [5..8] |
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$ ghci rotate.hs
rotate list 1
rotate list 10
rotate list 100000000