Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #80368

Re: generating 2D bit array variants with specific algorythm

Path csiph.com!usenet.pasdenom.info!news.etla.org!news.stack.nl!newsfeed.xs4all.nl!newsfeed1a.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path <joel.goldstick@gmail.com>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.017
X-Spam-Evidence '*H*': 0.97; '*S*': 0.00; 'nested': 0.07; 'cc:addr :python-list': 0.11; 'dimension': 0.16; 'help?': 0.16; 'loops': 0.16; 'rule.': 0.16; 'subject:array': 0.16; 'subject:bit': 0.16; 'throw': 0.16; 'variants': 0.16; 'wrote:': 0.18; 'variable': 0.18; 'fit': 0.20; 'rules': 0.22; 'cc:addr:python.org': 0.22; 'cc:2**0': 0.24; 'values': 0.27; 'header:In-Reply-To:1': 0.27; 'tried': 0.27; 'am,': 0.29; 'array': 0.29; 'robert': 0.30; 'message- id:@mail.gmail.com': 0.30; 'url:mailman': 0.30; 'url:python': 0.33; 'are:': 0.33; 'fri,': 0.33; 'subject:with': 0.35; 'but': 0.35; 'received:google.com': 0.35; 'returning': 0.36; 'url:listinfo': 0.36; 'thanks': 0.36; 'possible': 0.36; 'hi,': 0.36; 'url:org': 0.36; 'nov': 0.38; 'does': 0.39; 'url:mail': 0.40; 'sum': 0.64; 'results': 0.69; 'joel': 0.91; 'to:none': 0.92
DKIM-Signature v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:cc :content-type:content-transfer-encoding; bh=POSkVfi6yZaPJvWUsKd8dQrBkKS6wHJXSuVeUkEdcw4=; b=aG8HGHltxm6HmmrqZBAghw/Yg1phIfEBlA83eZn67dX2IqDJs0i6tlj0AdD0G+5UHa KFwLLwQGVPtf3BEk8n1PCQhEZgMdJy34dsdfgAky4Dk+Uz9Au3VSPwK3nCg3U0VTtNfn GFpoXBLOfwpGNrt+jGYDb15cCNkJH2/9+/snhgadPr5AvrkzwK3Wra8lrRjZn6pxZQbs eK4W/d3BvnD4NMsjejayxguL2THFsIbeC9icX4V9qwObNQtq88HAFB7DwolzYdqNAa6R Ym5A8OVZp5vhY0M6KGiLvcmJ6mxhy0RycgVULdAQWY+emZMkZUJpd0FodOXzWWEo4jNH ud8A==
MIME-Version 1.0
X-Received by 10.224.111.201 with SMTP id t9mr18465767qap.44.1415375495961; Fri, 07 Nov 2014 07:51:35 -0800 (PST)
In-Reply-To <0e6787f9-88d6-423a-8410-7578fa83d61c@googlegroups.com>
References <0e6787f9-88d6-423a-8410-7578fa83d61c@googlegroups.com>
Date Fri, 7 Nov 2014 10:51:35 -0500
Subject Re: generating 2D bit array variants with specific algorythm
From Joel Goldstick <joel.goldstick@gmail.com>
Cc "python-list@python.org" <python-list@python.org>
Content-Type text/plain; charset=UTF-8
Content-Transfer-Encoding quoted-printable
X-BeenThere python-list@python.org
X-Mailman-Version 2.1.15
Precedence list
List-Id General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe <https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive <http://mail.python.org/pipermail/python-list/>
List-Post <mailto:python-list@python.org>
List-Help <mailto:python-list-request@python.org?subject=help>
List-Subscribe <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups comp.lang.python
Message-ID <mailman.15566.1415375498.18130.python-list@python.org> (permalink)
Lines 49
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1415375498 news.xs4all.nl 2903 [2001:888:2000:d::a6]:37094
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:80368

Show key headers only | View raw

On Fri, Nov 7, 2014 at 10:39 AM, Robert Voigtländer
<r.voigtlaender@gmail.com> wrote:
> Hi,
>
> I need to generate all variants of a 2D array with variable dimension sizes which fit a specific rule. (up to 200*1000)
>
> The rules are:
> - Values are only 0 or 1
> - the sum of each line bust be 1
> - only valid results must be generated (generating all and only returning the valid results takes to long; that's what I tried already)
>
> So for a 2x2 array these would be the valid results:
>
> 10
> 01
>
> 01
> 10
>
> 10
> 10
>
> 01
> 01
>
>
> Must be possible with nested loops and a counter per line. But I don't get it.
>
> Can someone help?

is this valid:
1011
What I mean is do you throw away the carry or does each row have only one zero?

>
> Thanks
> Robert
> --
> https://mail.python.org/mailman/listinfo/python-list



-- 
Joel Goldstick
http://joelgoldstick.com

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

generating 2D bit array variants with specific algorythm Robert Voigtländer <r.voigtlaender@gmail.com> - 2014-11-07 07:39 -0800
  Re: generating 2D bit array variants with specific algorythm Joel Goldstick <joel.goldstick@gmail.com> - 2014-11-07 10:51 -0500
    Re: generating 2D bit array variants with specific algorythm Robert Voigtländer <r.voigtlaender@gmail.com> - 2014-11-07 08:02 -0800
      Re: generating 2D bit array variants with specific algorythm "ast" <nomail@invalid.com> - 2014-11-07 17:40 +0100
  Re: generating 2D bit array variants with specific algorythm Peter Otten <__peter__@web.de> - 2014-11-07 17:29 +0100
  Re: generating 2D bit array variants with specific algorythm "ast" <nomail@invalid.com> - 2014-11-07 17:57 +0100
    Re: generating 2D bit array variants with specific algorythm "ast" <nomail@invalid.com> - 2014-11-07 17:58 +0100
  Re:generating 2D bit array variants with specific algorythm Dave Angel <davea@davea.name> - 2014-11-07 14:34 -0500
  Re: generating 2D bit array variants with specific algorythm Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2014-11-07 15:41 -0500
  Re: generating 2D bit array variants with specific algorythm Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2014-11-08 10:13 +1300
    Re: generating 2D bit array variants with specific algorythm sohcahtoa82@gmail.com - 2014-11-07 17:10 -0800

csiph-web