From <googleartist@yahoo.com> Wed Jan 1 21:02:58 2003
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Date: Wed, 1 Jan 2003 13:02:58 -0800 (PST)
From: artist google <googleartist@yahoo.com>
Subject: sort numbers
To: fwp@perl.org
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Hi,
I have this puzzle.
Given N numbers, N>4, you have to sort the numbers.
The only operation permitted is you can rotate any
sequencial 4 numbers in reverse order. or you can
roate the entire list sequencially.
How do u approach this??
Artist
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From unknown Wed Jan 1 22:20:42 2003
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Subject: Re: sort numbers
Date: Wed, 1 Jan 2003 22:20:42 +0000 (UTC)
Organization: lunix confusion services
References: <20030101210258.63148.qmail@web20805.mail.yahoo.com>
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From: fun_with_perl@ton.iguana.be (Ton Hospel)
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In article <20030101210258.63148.qmail@web20805.mail.yahoo.com>,
artist google <googleartist@yahoo.com> writes:
> Hi,
> I have this puzzle.
> Given N numbers, N>4, you have to sort the numbers.
> The only operation permitted is you can rotate any
> sequencial 4 numbers in reverse order. or you can
> roate the entire list sequencially.
>
> How do u approach this??
>
What is a reverse/sequential rotation ?
From <Philip.Newton@gmx.net> Thu Jan 2 05:13:55 2003
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From: Philip Newton <Philip.Newton@gmx.net>
To: fwp@perl.org
Subject: Re: sort numbers
Date: Thu, 02 Jan 2003 06:13:55 +0100
Organization: very little
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On Wed, 1 Jan 2003 13:02:58 -0800 (PST), googleartist@yahoo.com (Artist
Google) wrote:
> Hi,
> I have this puzzle.
> Given N numbers, N>4, you have to sort the numbers.
> The only operation permitted is you can rotate any
> sequencial 4 numbers in reverse order. or you can
> roate the entire list sequencially.
You're not allowed to compare numbers? That will make it difficult to
find out when the list is sorted.
Cheers,
Philip