Originally published: 2006-06-23 14:00:51
Last updated: 2006-06-30 00:03:39
Author: Wensheng Wang
I saw a lot of implementations that doesn't work on list with repeated items. For example: [3,3,"hello","hello"] This recipe show such function that works on any list. (update 6/29/06) added generator version permu2(xs).