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Failed to connect to MySQL: (1203) User howardkn already has more than 'max_user_connections' active connectionsPath: ...!news.mixmin.net!weretis.net!feeder8.news.weretis.net!pasdenom.info!nntpfeed.proxad.net!proxad.net!feeder1-1.proxad.net!cleanfeed1-b.proxad.net!nnrp2-2.free.fr!not-for-mail Date: Fri, 30 Sep 2022 07:17:16 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:102.0) Gecko/20100101 Thunderbird/102.3.0 Newsgroups: fr.sci.maths,fr.comp.lang.python Content-Language: fr From: ast Subject: Que fait ce programme ? Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Lines: 21 Message-ID: <63367bdd$0$25804$426a74cc@news.free.fr> Organization: Guest of ProXad - France NNTP-Posting-Date: 30 Sep 2022 07:17:17 CEST NNTP-Posting-Host: 91.170.32.5 X-Trace: 1664515037 news-1.free.fr 25804 91.170.32.5:13705 X-Complaints-To: abuse@proxad.net Bytes: 1324 Devinette: Que retourne cette petite fonction python (m et n sont 2 entiers naturels) def f(m, n): while n: m, n = m ^ n, (m & n) << 1 return m pour ceux qui ne connaissent pas python "while n" c'est "pendant que n est non nul" ^ est l'opérateur "ou exclusif" bit à bit & est le "et" bit à bit << 1 décalage à gauche bit à bit et ajout d'un 0 à droite a, b = c, d affectation simultanée a <- c et b <- d