Subj : Re: puzzle
To   : comp.programming
From : blmblm
Date : Thu Jul 14 2005 10:27 am

In article <42D13B68.CB9B3125@yahoo.com>,
CBFalconer  <cbfalconer@worldnet.att.net> wrote:
>spinoza1111@yahoo.com wrote:
>> 
>... snip ...
>> in this thread, I have repeatedly acknowledged that I did not have
>> enough erudition to think of, or in my case from grad school
>> remember, the XOR solution.
>... snip further pointless erudition ...
>
>FYI, the entire secret of the XOR solution is exposed in the
>following truth table:
>
>   a     b      XOR(a,b)
>   =     =      ========
>   F     F        F
>   F     T        T
>   T     F        T
>   T     T        F
>
>Some have been known to learn this without attending grad school.

Well ....  If you're saying that anyone who knows the XOR operator
should have come up with the XOR-based solution to the puzzle, I don't
think that's true.  I think it also requires a bit of cleverness, or
trickiness, or a certain mindset, or perhaps just having previously
encountered similar puzzle solutions.

-- 
| B. L. Massingill
| ObDisclaimer:  I don't speak for my employers; they return the favor.

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