## Re: [ISO8601] My kids found the following interesting, maybe you might also.

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• In a message dated 2/7/2006 9:52:57 A.M. Central Daylight Time, tex@yahoo-inc.com writes: The problem is terminology. I am guessing you mean the date when
Message 1 of 10 , Feb 7, 2006
In a message dated 2/7/2006 9:52:57 A.M. Central Daylight Time, tex@... writes:
The problem is terminology. I am guessing you mean the date when Daylight Saving time starts and stops.
I thought you were talking about "daylight"- ie the time the sunrises and the time the sunsets on any day.
yes, you are right.
I should have said daylight savings.

hjw

• ... runs ... I expect that the calculations built into the C library and such which yield day of week are similarly fast. I doubt I could beat them and would
Message 2 of 10 , Feb 7, 2006
> I optimized it for computers.
> Professor Dr J R Stockton, Surrey, UK. optimized it also and his
runs
> twice as fast as what I had developed.

I expect that the calculations built into the C library and such which
yield day of week are similarly fast. I doubt I could beat them and
would not try.

<aside>
A month or so ago I was looking into finding the greatest common
divisor of two integers. I had a pretty crude algorithm that I had
written some years ago. After telling a colleague about it, he very
quickly pointed me in the right direction...

Euclid's algorithm, developed around 300 BC! Very very fast on a
computer.

http://aleph0.clarku.edu/~djoyce/java/elements/bookVII/propVII2.html
</aside>
• ... That s a nice proof! I think I can see daylight now! ;-)
Message 3 of 10 , Feb 7, 2006
> <aside>
> A month or so ago I was looking into finding the greatest common
> divisor of two integers. I had a pretty crude algorithm that I had
> written some years ago. After telling a colleague about it, he very
> quickly pointed me in the right direction...
>
> Euclid's algorithm, developed around 300 BC! Very very fast on a
> computer.
>
> http://aleph0.clarku.edu/~djoyce/java/elements/bookVII/propVII2.html
> </aside>

That's a nice proof!
I think I can see daylight now!
;-)
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