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Re: Length of random index into list

• To: mathgroup at smc.vnet.net
• Subject: [mg74891] Re: Length of random index into list
• From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
• Date: Tue, 10 Apr 2007 05:16:54 -0400 (EDT)
• Organization: The Open University, Milton Keynes, UK
• References: <evd3sk$5iv$1@smc.vnet.net>

bitRAKE wrote:
> node = Length@Extract[s, indices]
> 
> How can this be done without using Extract?
> 
> Regards,
> bitRAKE
> 
> 

Does

node = Length /@ s

fit your needs?

Or

node = Length[s[[indices]]]

Regards,
Jean-Marc