MathGroup Archive: March 2008 [00781]

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Counting nonzeros

To: mathgroup at smc.vnet.net
Subject: [mg86865] Counting nonzeros
From: carlos at Colorado.EDU
Date: Mon, 24 Mar 2008 01:44:20 -0500 (EST)

I want to count the # of NZ entries in an arbitrary multilevel list,
say exp, that contains only integers.  Is this the easiest way:

  k = Length[Flatten[exp]]-Count[Flatten[exp],0]

Follow-Ups:
- Re: Counting nonzeros
  - From: "Thomas Dowling" <thomasgdowling@gmail.com>
- Re: Counting nonzeros
  - From: Andrzej Kozlowski <akoz@mimuw.edu.pl>

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