From 11a5fd38018498a7b7feb0e392ac36003b0440ac Mon Sep 17 00:00:00 2001
From: Joe Zhao <ztuowen@gmail.com>
Date: Mon, 16 Mar 2015 23:10:05 +0800
Subject: +12 +13 +14 +15

---
 h14.hs | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 h14.hs

(limited to 'h14.hs')

diff --git a/h14.hs b/h14.hs
new file mode 100644
index 0000000..e7ad73d
--- /dev/null
+++ b/h14.hs
@@ -0,0 +1,10 @@
+import Control.Applicative
+
+dupli :: [a] -> [a]
+dupli = concatMap (replicate 2)
+
+dupli' xs = concat [ [x,x] | x <- xs ]
+
+dupli'' = (<**> [id,id])
+
+dupli''' = foldr ((.) <$> (:) <*> (:)) []
-- 
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