Improved project structure.

haskell/e011.hs

@@ -0,0 +1,12 @@
+-- 11 - biggest multiple in 2d field
+parseSquare :: String -> [[Integer]]
+parseSquare = map (\line -> map read $ words line) . lines
+
+columns :: [[a]] -> [[a]]
+columns [[]] = []
+columns xs = map 
+
+main :: IO ()
+main = do
+  fileString <- readFile "problem_11.txt"
+  putStrLn . show $ parseSquare fileString