From: Bakul Shah <bakul@iitbombay.org>
To: Noel Chiappa <jnc@mercury.lcs.mit.edu>
Cc: tuhs@tuhs.org
Subject: [TUHS] Re: Unix v7 icheck dup problem
Date: Wed, 1 Mar 2023 18:12:02 -0800 [thread overview]
Message-ID: <BD3E34D4-1136-4A8A-A8C3-3899E39F4BA0@iitbombay.org> (raw)
In-Reply-To: <20230302013628.8E40618C07B@mercury.lcs.mit.edu>
On Mar 1, 2023, at 5:36 PM, Noel Chiappa <jnc@mercury.lcs.mit.edu> wrote:
>
> Steve Ward told another oral story which I'm pretty sure _is_ true, though.
> They ask the candidate to design a state machine (or digital logic, I forget
> which) which can tell if a number is divisible by three (I think I have the
> details correct, but I'm not absolutely certain). So they describe one - and
> then point out that you can feed the number in from either end (most or least
> significant end first) - and proves that it will work either way! The
> committee was blown away.
Doesn't everyone know that a number is divisible by 3 if the one digit
result after casting out 9s is divisible by 3?
next prev parent reply other threads:[~2023-03-02 2:12 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-02 1:36 Noel Chiappa
2023-03-02 1:56 ` John Cowan
2023-03-02 6:41 ` Lars Brinkhoff
2023-03-02 2:12 ` Bakul Shah [this message]
2023-03-02 2:46 ` Rich Salz
-- strict thread matches above, loose matches on Subject: below --
2023-03-06 8:14 Noel Chiappa
2023-03-06 8:58 ` Jonathan Gray
2023-03-07 2:05 ` Kenneth Goodwin
2023-03-04 14:41 Noel Chiappa
2023-03-04 14:49 ` KenUnix
2023-03-03 18:22 Noel Chiappa
2023-03-03 19:25 ` Chet Ramey
2023-03-03 21:26 ` John Cowan
2023-03-04 0:23 ` Chet Ramey
2023-03-03 19:35 ` Clem Cole
2023-03-04 2:45 ` Jonathan Gray
2023-03-03 23:00 ` Jonathan Gray
2023-03-04 9:07 ` Jonathan Gray
2023-03-04 11:19 ` KenUnix
2023-03-02 1:59 Noel Chiappa
2023-03-02 2:11 ` Dan Cross
2023-03-01 21:29 Noel Chiappa
2023-03-01 21:54 ` KenUnix
2023-03-01 21:55 ` John Cowan
2023-03-01 22:15 ` Jon Forrest
2023-03-02 4:16 ` Jonathan Gray
2023-03-01 15:09 Noel Chiappa
2023-03-01 16:18 ` Ron Natalie
2023-03-01 16:45 ` KenUnix
2023-03-01 16:57 ` Theodore Ts'o
2023-03-01 20:52 ` Dave Horsfall
2023-03-02 1:46 ` Jonathan Gray
2023-03-02 3:05 ` Dave Horsfall
2023-03-02 7:56 ` John Cowan
2023-03-02 8:53 ` Steve Nickolas
2023-03-02 8:01 ` Jonathan Gray
2023-03-02 7:34 ` arnold
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