[Haskell-cafe] How to do the "permutation and combination" thing?

[Casey Hawthorne]

This sounds like homework.

Think in abstract terms what you want to accomplish.

Start with the simplest case first, usually the base case.


On Fri, 12 Mar 2010 14:02:02 +0800, you wrote:

>Hi,
>  For example, I have this:
>list1 = [a, b, c]
>list2 = [d, e, f]
>list3 = [g, h, i]
>  Now I want:
>[ [(a, d, g), (b, e, h), (c, f, i)]
>, ... ] -- a list that contains all the combinations.
>  How to do it pretty? Thanks.
--
Regards,
Casey