Did anyone compare timing of vairous solutions presented in this forum with
classic solutions in http://www.jsoftware.com/papers/play132.htm ? It may need
to modify evolute to involute before testing.

Eugene McDonnell wrote:
> 
> On Nov 26, 2006, at 12:18 AM, Roger Hui wrote:
> 
>> Now that we have mastered zigzag order, how about the
>> spiral order?  For example, the spiral order for a
>> 4 5 array is:
>>
>>  0  1  2  3 4
>> 13 14 15 16 5
>> 12 19 18 17 6
>> 11 10  9  8 7
>>
> 
> My  At Play With J article "Volutes" in Vector 13.2 (October 1996) gives
> several solutions to the problem, but I doubt many people could improve
> Joey Tuttle's amazing one.
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
> 
> 


-- 
regards,
bill
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