# HG changeset patch
# User Markus Kaiser <markus.kaiser@in.tum.de>
# Date 1354138949 -3600
# Node ID 7acf82c8fb3a3b88ce83ab5fcb739238b6e496cb
# Parent  bef891fc07b4125ffa6e98fc0bdc09ffaa9299ff
week 7

diff -r bef891fc07b4 -r 7acf82c8fb3a blatt7.pdf
Binary file blatt7.pdf has changed
diff -r bef891fc07b4 -r 7acf82c8fb3a exercises/src/Exercise_7.hs
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/exercises/src/Exercise_7.hs	Wed Nov 28 22:42:29 2012 +0100
@@ -0,0 +1,160 @@
+{-# LANGUAGE DeriveGeneric #-}
+module Exercise_7 where
+import Data.List hiding (insert)
+import Data.Char
+import Test.QuickCheck
+
+{- Library DO NOT CHANGE -}
+data Tree a =
+  Empty |
+  Node a (Tree a) (Tree a)
+    deriving (Eq, Show)
+
+data Html =
+  Text String |
+  Block String [Html]
+
+swissLetters :: [(Int, String)]
+swissLetters =
+  [(196, "Auml"), (214, "Ouml"), (220, "Uuml"),
+   (228, "auml"), (246, "ouml"), (252, "uuml")]
+
+grueezi =
+  Block "html"
+    [Block "head"
+       [Block "author" [Text "der MC"],
+        Block "date" [Text "27.11.2012"],
+        Block "topsecret" []],
+     Block "body"
+       [Block "h1" [Text "Gr\252ezi!"],
+        Block "p" [Text "\196b\228, genau. Sal\252. Bis sp\246ter!"]]]
+
+data DirTree a =
+  File a |
+  Dir a [DirTree a]
+    deriving (Eq, Show)
+
+exDir :: DirTree String
+exDir =
+  Dir "" [Dir "usr" [Dir "lib" [File "vim"], Dir "include" [File "string.h"]],
+    Dir "bin" $ [File "ls", File "cat"]]
+{- End Library -}
+
+
+{---------------------------------------------------------------------}
+{- Aufgabe G7.1 -}
+
+{- 1. -}
+data WildChar =
+  Missing
+
+
+data WildPat =
+  WildPat [WildChar]
+
+
+{- 2. -}
+stringFromWildChar :: WildChar -> String
+stringFromWildChar = undefined
+
+
+stringFromWildPat :: WildPat -> String
+stringFromWildPat (WildPat ws) = undefined
+
+
+{- 3. -}
+instance Show WildChar where
+        show = stringFromWildChar
+
+instance Show WildPat where
+        show = stringFromWildPat
+
+
+{- 4. -}
+wildCharsFromString :: String -> [WildChar]
+wildCharsFromString = undefined
+
+wildPatFromString :: String -> WildPat
+wildPatFromString cs = WildPat (wildCharsFromString cs)
+
+
+{- 5. -}
+prop_stringFromWildPatFromString s = undefined
+
+prop_wildPatFromStringFromWildPat p = undefined
+
+
+{- 6. -}
+{-
+G4.4
+
+match [] ys             = null ys
+match ('?':ps) (y:ys)   = match ps ys
+match ('*':ps) []       = match ps []
+match ('*':ps) (y:ys)   = match ps (y:ys) || match ('*':ps) ys
+match (p:ps) (y:ys)     = p == y && match ps ys
+match ps []             = False
+-}
+
+matchWildChars :: [WildChar] -> String -> Bool
+matchWildChars = undefined
+
+
+matchWildPat :: WildPat -> String -> Bool
+matchWildPat (WildPat ws) = matchWildChars ws
+
+match = matchWildPat . wildPatFromString
+
+
+
+{---------------------------------------------------------------------}
+{- Aufgabe G7.2 -}
+
+insert :: Ord a => a -> Tree a -> Tree a
+insert x Empty = Node x Empty Empty
+insert x (Node a l r)
+        | x < a = Node a (insert x l) r
+        | a < x = Node a l (insert x r)
+        | otherwise = Node a l r
+
+
+treeSort :: Ord a => [a] -> [a]
+treeSort = undefined
+
+
+
+{---------------------------------------------------------------------}
+{- Aufgabe G7.3 -}
+
+plainHtml :: Html -> String
+plainHtml = undefined
+
+
+
+{---------------------------------------------------------------------}
+{- Aufgabe H7.1 -}
+
+prettyHtml :: Int -> Html -> String
+prettyHtml = undefined
+
+
+
+{---------------------------------------------------------------------}
+{- Aufgabe H7.2 -}
+
+plainDirTree :: Show a => DirTree a -> String
+plainDirTree = undefined
+
+
+prettyDirTree :: Show a => DirTree a -> String
+prettyDirTree = undefined
+
+
+
+{---------------------------------------------------------------------}
+{- Aufgabe H7.3 -}
+
+{-WETT-}
+unscrambleWords :: [String] -> [String] -> [String]
+unscrambleWords = undefined
+{-TTEW-}