feat(haskell): add persistent bugger

2021-10-28 23:50:18 +03:00 · 2021-10-28 23:50:18 +03:00 · 2e43ff0c6b
commit 2e43ff0c6b
1 changed files with 6 additions and 0 deletions
--- a/haskell/1_persistent_bugger.hs
+++ b/haskell/1_persistent_bugger.hs
@ -0,0 +1,6 @@
+import Data.Char(digitToInt)
+
+persistence :: Int -> Int
+persistence n
+    | n < 10 = 0
+    | otherwise = 1 + persistence (product $ map digitToInt $ show n)