+28

1 files changed, 11 insertions, 0 deletions

diff --git a/h28.hs b/h28.hs
new file mode 100644
index 0000000..0ff75cc
--- /dev/null
+++ b/h28.hs
@@ -0,0 +1,11 @@
+import Data.List
+import Data.Ord (comparing)
+import Data.Function
+
+lsort :: [[a]] -> [[a]]
+lsort = sortBy (comparing length)
+
+lsort' = sortBy (\xs ys -> compare (length xs) (length ys))
+
+lsort'' = sortBy (compare `on` length)
+