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| -rw-r--r-- | Puzzle1Better.hs | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Puzzle1Better.hs b/Puzzle1Better.hs index d8d0155..f33d11a 100644 --- a/Puzzle1Better.hs +++ b/Puzzle1Better.hs @@ -1,3 +1,4 @@ +-- source: https://www.reddit.com/r/adventofcode/comments/7gsrc2/2017_day_1_solutions/dqlhkcj/ import Data.Char (digitToInt) solve n xs = sum $ zipWith (\a b -> if a == b then a else 0) xs (drop n $ cycle xs) |