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Diffstat (limited to '70b-73/70c.hs')
| -rw-r--r-- | 70b-73/70c.hs | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/70b-73/70c.hs b/70b-73/70c.hs new file mode 100644 index 0000000..2a10432 --- /dev/null +++ b/70b-73/70c.hs @@ -0,0 +1,7 @@ +import Data.List (foldl') + +data Tree a = Node a [Tree a] deriving (Eq, Show) + +nnodes :: Tree a -> Int + +nnodes (Node _ xs) = 1 + (foldl' (+) 0 $ map nnodes xs) |