Created
July 20, 2015 06:04
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| import Data.List.Split | |
| pn str = fst $ pnPrime $ splitOn " " str | |
| pnPrime ("+":xs) = | |
| let (a, n1) = pnPrime(xs) | |
| (b, n2) = pnPrime(n1) | |
| in (a + b, n2) | |
| pnPrime src = ((read $ head src :: Int), tail src) | |
| main = do | |
| print $ pn "1" | |
| print $ pn "+ 1 2" | |
| print $ pn "+ 1 + 2 3" | |
| print $ pn "+ + 1 2 3" | |
| print $ pn "+ + 1 2 + 3 4" |
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