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- suche :: String -> String -> Integer
- suche haystack needle = suche' (zip [0..] haystack) needle
- suche' :: [(Integer, Char)] -> String -> Integer
- suche' [] needle = -1
- suche' ((idx, x):xs) needle
- | (x:map snd (take (length needle - 1) xs)) == needle = idx
- | otherwise = suche' xs needle
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