N    Original    Faster   Non-pure
 
  4       0.035     0.034      0.035
  5       0.045     0.036      0.036
  6       0.769     0.041      0.038
  7       4.833     0.042      0.038
  8                 0.082      0.049
  9                 0.072      0.044
 10                 0.113      0.056
 11                 3.504      0.051
 12                            0.096
 13                            0.071
 14                            0.577
 15                            0.467
 16                            3.864
 17                            2.289
 18                           19.630
 19                            1.324
 20                          117.227

[download]

I'm curious - have you had a chance to look at why the speeds actually improve when going from 8 to 9 for both Faster and Non-pure and from 10-11 for Non-pure, but slows down 30x for Faster? And, what's with 17, 18, and 19 when it's 2.289 -> 19.630 -> 1.324??

------
We are the carpenters and bricklayers of the Information Age.

The idea is a little like C++ templates, except not quite so brain-meltingly complicated. -- TheDamian, Exegesis 6

Please remember that I'm crufty and crochety. All opinions are purely mine and all code is untested, unless otherwise specified.

In reply to Re: Re: The N-queens problem using pure regexes by dragonchild
in thread The N-queens problem using pure regexes by Abigail-II

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