Re: Occurrences in Mathematica
- To: mathgroup at smc.vnet.net
- Subject: [mg106382] Re: Occurrences in Mathematica
- From: dh <dh at metrohm.com>
- Date: Mon, 11 Jan 2010 05:29:49 -0500 (EST)
- References: <hic33o$59f$1@smc.vnet.net>
Gi George,
you can do this using e.g. Tally and Cases:
list = {a, a, b, a, c, b, a};
Cases[Tally[list], {x_, 1} :> x]
Daniel
George wrote:
> Hi,
>
> I have a very big list of elements and I need Mathematica to give me
> only those elements which occure only once...
>
> Could anybody advise me please how to write the code for that?
>
> Thks much
> George
>