Re: [PHP] for all you recursion experts--i'm stuck! help! From: peter tatischev (peter <email protected>)
Date: 08/15/00

If it were prolog things could be much easier, cause it was
almost specifically created for that kind of tasks...
Anybody knows if prolog extensions are available for PHP?

~Peter
----- Original Message -----
From: Bill Zeller <billzeller <email protected>>
To: <php-general <email protected>>
Sent: 15 августа 2000 г. 22:26
Subject: [PHP] for all you recursion experts--i'm stuck! help!

> Hey,
>
> I've been trying to figure out how to loop through a
> "box" of letters. For example, if I had something like
> this:
>
> a d b a e t b
> q a w e g a w
> w b p w a e d
> p a w e d g p
> d a w w e b a
>
> It should start at a and loop through every possible
> combination until it finds out that it can't be a
> word. So in the above example, it should think like
> this:
>
> 1. There are words that begin with a, continue...
> 2. 'ad' is a word, add it to array $words[]...
> 3. There are words that begin with 'ad', continue...
> 4. 'adq' is not a word, do not add it to array
> $words...
> 5. There are no words that begin with 'adq', go back
> to last word (in this case it is 'ad')
>
> It would then go onto adb, adba, etc. It should loop
> through every possible combination the entire puzzle,
> checking each letter with every other letter close to
> it.
>
> Any ideas on where to start?
>
> Best Regards,
> Bill Zeller
>
>
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