This is just for fun, in case someone would be interested and because
I haven't had the pleasure of posting anything here in many years ... http://derek.marshall.googlepages.co...onsudokusolver
Appreciate any feedback anyone who takes the time to have a look would
want to give ...
Yours with-too-much-time-to-kill-on-the-train'ly,
Derek 2  1382 
On Jan 23, 2008, at 10:02 PM, Derek Marshall wrote:
This is just for fun, in case someone would be interested and because
I haven't had the pleasure of posting anything here in many years ...
http://derek.marshall.googlepages.co...onsudokusolver
Appreciate any feedback anyone who takes the time to have a look would
want to give ...
Yours with-too-much-time-to-kill-on-the-train'ly,
Derek
--
http://mail.python.org/mailman/listinfo/python-list
For those interested in this topic, here's another (much shorter) one: http://norvig.com/sudoku.html
I'm not making any judgements here, though. If anyone takes the time
to actually review them, I'd be interested in hearing any educated
comparisons.
Shawn
On Thu, 24 Jan 2008 21:09:42 +0100
Thomas Thiel <th************ @freenet.dewrot e:
Neither fast nor user friendly, but very concise:
This is a bit faster:
options = set([str(i) for i in range(1, 10)])
def allow(puzzle,i) :
exclude = set(x if i//9 == j//9 or i%9 == j%9
or i//27 == j//27 and (i%9)//3 == (j%9)//3
else '0' for j,x in enumerate(puzzl e))
return options-exclude
def solve(puzzle):
zeros = [i for i,x in enumerate(puzzl e) if x == '0']
if not zeros:
print puzzle
else:
i,R = min(((j,allow(p uzzle,j)) for j in zeros),
key=lambda x: len(x[1]))
for option in R:
solve(puzzle[:i] + option + puzzle[i+1:])
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