1 files changed, 26 insertions, 0 deletions
diff --git a/Haskell-book/14/morse/src/WordNumber.hs b/Haskell-book/14/morse/src/WordNumber.hs
new file mode 100644
index 0000000..5b25ee2
--- /dev/null
+++ b/Haskell-book/14/morse/src/WordNumber.hs
@@ -0,0 +1,26 @@
+module WordNumber where
+
+import Data.List (unfoldr, intercalate)
+import Data.Maybe (Maybe(..))
+
+digitToWord :: Int -> String
+digitToWord 0 = "zero"
+digitToWord 1 = "one"
+digitToWord 2 = "two"
+digitToWord 3 = "three"
+digitToWord 4 = "four"
+digitToWord 5 = "five" 
+digitToWord 6 = "six"
+digitToWord 7 = "seven"
+digitToWord 8 = "eight"
+digitToWord 9 = "nine"
+digitToWord _ = ""
+
+digits :: Int -> [Int]
+digits n = reverse $ unfoldr unfold n
+    where unfold x
+                | x == 0    = Nothing
+                | otherwise = Just ((mod x 10), (div x 10))
+
+wordNumber :: Int -> String
+wordNumber n = intercalate "-" $ map digitToWord (digits n)
+\ No newline at end of file