Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!goblin2!goblin.stu.neva.ru!newsfeed.xs4all.nl!newsfeed3.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.014 X-Spam-Evidence: '*H*': 0.97; '*S*': 0.00; 'algorithm': 0.04; 'modify': 0.07; 'append': 0.09; 'subject:string': 0.09; 'jan': 0.12; '23,': 0.16; 'generator.': 0.16; 'wrote:': 0.18; 'replacing': 0.19; 'thu,': 0.19; 'memory': 0.22; 'to:name:python- list@python.org': 0.22; 'issue,': 0.24; 'header:In-Reply-To:1': 0.27; 'idea': 0.28; 'function': 0.29; 'am,': 0.29; 'message- id:@mail.gmail.com': 0.30; 'that.': 0.31; 'received:209.85': 0.35; 'subject:lists': 0.35; 'but': 0.35; 'received:google.com': 0.35; 'really': 0.36; 'received:209': 0.37; 'to:addr:python-list': 0.38; 'sure': 0.39; 'to:addr:python.org': 0.39; 'how': 0.40; 'dave': 0.60; 'more': 0.64; 'skip:\xe2 10': 0.65; 'angel': 0.91 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:content-type; bh=DNksGIcLxcDWT+0iOO1Q7fqrfm6fKF7aqysfrwInr3k=; b=Zou6bnCMmks7Dn1fKunZF+L4wuB1MEz3L1ocRR/5qmlAUV8zHs5pbjmK0zb/uHpDkX W42AG7Okw281RIkqoottym3cBx5fEikr3WUIjA/l1kT6fIMpeMSzeCTYq8L8XEfJI6T5 mDl4eolOrdLFmR/Hf9G/pA4KvIe0ZSR+eYwY/catpN/OEnI4Niy9m+snIyTKc+SAnYg2 rO59qduHz3R4RuW07othSzmCA5Y7VHJjca8RKK8skBrVP27fJJ/XScCk0NoyaWTk2zVX vEH8txOrWNAeXNGukwlEGX8M8WkZdOlZjKWQ0D/V46HjIWeUeiWMWN3bMoJIqzGFiJBh VqAA== X-Gm-Message-State: ALoCoQmUvzzQV5Z/eVFxlglc5v1KeAwWmrUbVOBRKh1t/7bRb9FGKlaJrHPf0RjJCO4zV1ijISUR X-Received: by 10.60.98.40 with SMTP id ef8mr6700106oeb.13.1390497680102; Thu, 23 Jan 2014 09:21:20 -0800 (PST) MIME-Version: 1.0 In-Reply-To: References: From: Vincent Davis Date: Thu, 23 Jan 2014 11:20:59 -0600 Subject: Re: generate De Bruijn sequence memory and string vs lists To: "python-list@python.org" Content-Type: multipart/alternative; boundary=089e013a182248ac0104f0a67814 X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 53 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1390497691 news.xs4all.nl 2970 [2001:888:2000:d::a6]:48813 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:64623 --089e013a182248ac0104f0a67814 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On Thu, Jan 23, 2014 at 10:18 AM, Dave Angel wrote: > If memory size is your issue, why not make the function a > generator, by replacing the append with a yield? > =E2=80=8BOne more thought on the generator. I have an idea for how to use t= he generator but I still need 1, chucks of size n de_brujin(k, n) and the ordering the same ordering as found in =E2=80=8Bde_brujin(k, n). I am not really sure how to modify the algorithm to do that. Any ideas? I won't have time to think hard about that until later. Vincent Davis 720-301-3003 --089e013a182248ac0104f0a67814 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

= On Thu, Jan 23, 2014 at 10:18 AM, Dave Angel <davea@davea.name> wrote:
If memory size = is your issue, =C2=A0why not make the function a
=C2=A0generator, =C2=A0by replacing the append with a yield?

=E2=80=8BOne more= thought on the generator. I have an idea for how to use the generator but = I still need 1, chucks of size n de_brujin(k, n) and the ordering the same = ordering as found in =E2=80=8Bde_brujin(k, n).
I am not really sure how to modify the algorithm to do that. Any= ideas? I won't have time to think hard about that until later.

Vincent Davis
720-301-3003
--089e013a182248ac0104f0a67814--