1 files changed, 13 insertions, 0 deletions
diff --git a/progs/demo/quicksort.hs b/progs/demo/quicksort.hs
new file mode 100644
index 0000000..30b4ab4
--- /dev/null
+++ b/progs/demo/quicksort.hs
@@ -0,0 +1,13 @@
+-- Quick sort for Haskell.
+
+module Main where
+
+qs :: [Int] -> [Int]
+qs []     = []
+qs (a:as) = qs [x | x <- as, x <= a] ++ [a] ++ qs [x | x <- as, x > a]
+
+main =
+  appendChan stdout "Enter a list of integers separated by \",\"\n" abort $
+  readChan stdin abort $ \ input ->
+  appendChan stdout (show (qs (read ("[" ++ (head (lines input)) ++ "]"))))
+             abort done