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authorJoe Zhao <ztuowen@gmail.com>2015-03-31 23:41:55 +0800
committerJoe Zhao <ztuowen@gmail.com>2015-03-31 23:41:55 +0800
commita9abc1da41b56edbed00081800382e854d6698d0 (patch)
tree5265cc1c5296768438b67299afd59bcc57c58f0c /h13.hs
parent378f6303e8860b7bbca7dea787d584a6728cebf1 (diff)
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rename to H**, +31 +32 +33 +34 +35 +36
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diff --git a/h13.hs b/h13.hs
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-data ListItem a = Single a | Multiple a Int
- deriving (Show)
-
-encode :: Eq a => [a] -> [(a,Int)]
-encode = foldr encodeHelper []
- where
- encodeHelper a p@((x,c):ps) | x==a = (a,c+1):ps
- encodeHelper a p = (a,1):p
-
-encodeDirect :: Eq a => [a] -> [ListItem a]
-encodeDirect = map encodeHelper . encode
- where
- encodeHelper (a,c)
- | c>1 = Multiple a c
- | otherwise = Single a