Re: Greatest element in list
- To: mathgroup at smc.vnet.net
- Subject: [mg30498] Re: [mg30474] Greatest element in list
- From: Ken Levasseur <Kenneth_Levasseur at uml.edu>
- Date: Fri, 24 Aug 2001 04:05:57 -0400 (EDT)
- References: <200108230615.CAA16967@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Oliver:
You need to enclose list in [ ]'s:
Position[#,Max[#]]&[list]
or use the syntax
list//Position[#,Max[#]]&
This should work if Max[list] evaluates to an element of list, but that
doesn't aways happen if you have a list of symbols. For example,
Max[{a,b}] doesn't simplify further and so Position will return {}.
Ken Levasseur
Math. Sciences
UMass Lowell
Oliver Friedrich wrote:
>Hi,
>
>what's the best way to get the position of the greatest number in list of
>reals? I've tried
>
>Position[#,Max[#]]&list
>
>but surprisingly, it doesn't work all the time, sometimes it returns an
>empty list. How is that, because a theorem says that a non empty set of real
>numbers must have at least one biggest element. So Max[#] can't be empty.
>
>Any solutions ?
>
>Oliver Friedrich
>
>
>
- References:
- Greatest element in list
- From: "Oliver Friedrich" <oliver.friedrich@tz-mikroelektronik.de>
- Greatest element in list