Re: List searching
- To: mathgroup at smc.vnet.net
- Subject: [mg57544] Re: List searching
- From: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>
- Date: Wed, 1 Jun 2005 06:01:29 -0400 (EDT)
- Organization: Uni Leipzig
- References: <d7h9gm$3go$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi,
MatchQ[lst, {___, a_, ___, a_, ___}]
will test for multiple elements in lst and
and
MatchQ[lst, {___, a_ /; a > CretainNumber, ___}]
will do the second test.
Regards
Jens
"Guy Israeli" <guyi1 at netvision.net.il> schrieb im
Newsbeitrag news:d7h9gm$3go$1 at smc.vnet.net...
> Hello,
>
> I needed to test lists for certain elements
> inside of it, however, since I
> didn't find the proper function I had to write
> them myself.
>
> are there functions that can do the following:
>
> - tests (returns true or false) if within the
> list there is an element that
> appears more than once
>
> - tests if there is an element in the list that
> is bigger/smaller than a
> certain number
>
> I would really appreciate your help,
>
> Guy
>
>