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A-M baby

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Ingy döt Net 2013-04-10 21:29:02 -07:00
parent 764da6cbbb
commit db842d013d
19005 changed files with 197040 additions and 7 deletions
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Task/Huffman-coding/Haskell/huffman-coding-3.hs Normal file
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import qualified Data.Set as S
htree :: (Ord t, Num t, Ord a) => S.Set (t, HTree a) -> HTree a
htree ts | S.null ts_1 = t1
| otherwise = htree ts_3
where
((w1,t1), ts_1) = S.deleteFindMin ts
((w2,t2), ts_2) = S.deleteFindMin ts_1
ts_3 = S.insert (w1 + w2, Branch t1 t2) ts_2
huffmanTree :: (Ord w, Num w, Ord a) => [(w, a)] -> HTree a
huffmanTree = htree . S.fromList . map (second Leaf)