From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Marcin Borkowski Newsgroups: gmane.emacs.help Subject: Re: puzzle with string permutations [photo] Date: Tue, 07 Jun 2022 09:12:27 +0200 Message-ID: <87wndtrlpg.fsf@mbork.pl> References: <87r141rn8n.fsf@dataswamp.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="34898"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: mu4e 1.1.0; emacs 29.0.50 Cc: help-gnu-emacs@gnu.org To: Emanuel Berg Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Tue Jun 07 09:24:44 2022 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1nyTa0-0008ps-Io for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 07 Jun 2022 09:24:44 +0200 Original-Received: from localhost ([::1]:49160 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nyTZz-0002QW-Jb for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 07 Jun 2022 03:24:43 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:50150) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nyTOX-0005qW-Qu for help-gnu-emacs@gnu.org; Tue, 07 Jun 2022 03:12:53 -0400 Original-Received: from mail.mojserwer.eu ([195.110.48.8]:56652) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nyTOQ-0000Qz-TT for help-gnu-emacs@gnu.org; Tue, 07 Jun 2022 03:12:51 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by mail.mojserwer.eu (Postfix) with ESMTP id 10941E6D6D; Tue, 7 Jun 2022 09:12:34 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at mail.mojserwer.eu Original-Received: from mail.mojserwer.eu ([127.0.0.1]) by localhost (mail.mojserwer.eu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id reVoR_BPyq1M; Tue, 7 Jun 2022 09:12:30 +0200 (CEST) Original-Received: from localhost (178235147096.dynamic-3-poz-k-0-1-0.vectranet.pl [178.235.147.96]) by mail.mojserwer.eu (Postfix) with ESMTPSA id 9B8C5E62F4; Tue, 7 Jun 2022 09:12:30 +0200 (CEST) In-reply-to: <87r141rn8n.fsf@dataswamp.org> Received-SPF: pass client-ip=195.110.48.8; envelope-from=mbork@mbork.pl; helo=mail.mojserwer.eu X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:137502 Archived-At: On 2022-06-07, at 08:39, Emanuel Berg wrote: > Try to solve this - not easy! > > https://dataswamp.org/~incal/pimgs/survivor-puzzle.png > > It is from US/CBC Survivor S42E13 around 9 minutes in. > > It says > > eht kudtce pigelsen tagni ogod seot erontuf si ni fo hte > > Easy LOL :) The first word should be "the"! I'm not sure if it's just permutations. "kudtce" could be "tucked", but "erontuf"? Anyway, I would personally permute only consonants - if the vowels are out of order, the brain can often fill in the blanks pretty easily. Also, it would be great to leverage ispell to exclude non-words from the list of permutations - unfortunately, I don't know how to do it (`ispell-word' looks pretty magical to me, at least after ~10 minutes of looking - maybe if I had more time...) But this made me think - one could write a simple game (a bit like M-x decipher) to help decipher "permutation-based secret messages". Looks like a fun project. Also, you don't have to list all the permutations to _count_ them - Emacs can actually compute factorials: (calc-eval "fact(5)") => "120" (calc-eval "fact(10)") => "3628800" Best, -- Marcin Borkowski http://mbork.pl