Add 2015 sources

1 files changed, 18 insertions, 0 deletions

diff --git a/2015/day10.hs b/2015/day10.hs
new file mode 100644
index 0000000..e5ff554
--- /dev/null
+++ b/2015/day10.hs
@@ -0,0 +1,18 @@
+module Main where
+
+import Data.Char
+import Data.List
+import Control.Monad
+
+looksay :: String -> String
+looksay "" = ""
+looksay s = chr (48 + length start) : head s : looksay rest
+    where start = takeWhile (== head s) s
+          rest = drop (length start) s
+
+day9 :: IO ()
+day9 = do
+    let input = "1113122113"
+    print $ length $ (iterate looksay input) !! 50
+
+main = day9