week 5

diff --git a/week5/mart/Origami.icl b/week5/mart/Origami.icl
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+module Origami\r
+\r
+import StdEnv\r
+\r
+sum`         = foldr (+) 0\r
+prod`        = foldr (*) 1\r
+flatten`     = foldr (++) []\r
+length`      = foldr (\x l=l+1) 0\r
+reverse`     = foldl (\xs x=[x:xs]) []\r
+takeWhile` p = foldr (\x xs=if (p x) [x:xs] []) []\r
+maxList`     = foldr (\x m=if (m<x) x m) 0\r