Re: Sort List of Lists
- To: mathgroup at smc.vnet.net
- Subject: [mg24819] Re: Sort List of Lists
- From: Leszek Sczaniecki <lsczan at concentric.net>
- Date: Sun, 13 Aug 2000 23:49:44 -0400 (EDT)
- Organization: Concentric Internet Services
- References: <8n5ipb$n0o@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
lst = {{9, 2}, {1, 6}, {2, 4}};
Sort[lst, #1[[2]] >= #2[[2]] &]
Cheers,
-- Leszek
dana2 wrote:
> Hello. Could someone please give me a clue on how to sort a list based on
> the Second Element in a List:
> I think one needs to use a "pure function" but I am too new with Mathematica (v4)
> (Trying to learn though) :>)
>
> For Example, I would like to sort this list based on the second element in
> each sub-list in "Descending" order:
>
> {{9, 2}, {1, 6}, {2, 4}}
>
> Results would be:
> { {1,6},{2,4},{9,2} }
>
> I think I will learn a lot about Lists, Sorting, and Pure Functions all in
> one shot if I could get a hint on how to do this.
>
> Thank you very much. Dana