Created
March 17, 2015 19:06
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extract minimum from the list in O(N)
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| extractMinBy :: (a -> a -> Ordering) -> [a] -> (a, [a]) | |
| extractMinBy f (x:xs) = extractMinBy' f [x] xs (x, xs) | |
| extractMinBy' :: (a -> a -> Ordering) -> [a] -> [a] -> (a, [a]) -> (a, [a]) | |
| extractMinBy' f left [] r = r | |
| extractMinBy' f left (r:right) z@(x, xs) = extractMinBy' f (left ++ [r]) right newResult | |
| where newResult = if f r x == LT then (r, left ++ right) else z |
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