Comments on: Yet Another Sudoku Puzzle Solver Using AWK

By: Turbocharge Awk Scripts – Translate into C (Sudoku Revisted)

Turbocharge Awk Scripts – Translate into C (Sudoku Revisted) — Wed, 10 Feb 2010 06:03:57 +0000

[...] the first article of this series we saw how awk could be put to work (or play) for more than just processing text. The simple script demonstrated the use of associative [...]

By: bill duncan

bill duncan — Sat, 06 Feb 2010 23:05:20 +0000

Thanks Alfredo,
Mssion accomplished I guess; that’s what I was trying to do..
Stay tuned, as there are some follow-up articles coming.

By: alfredo ricciotti

alfredo ricciotti — Sat, 06 Feb 2010 12:27:01 +0000

Thank for the article, it is a nice way to spur awk interest.

By: bill duncan

bill duncan — Sun, 24 Jan 2010 20:23:17 +0000

Thanks for all your comments. There are some more interesting awk applications coming, so stay tuned!

By: eMancu

eMancu — Sun, 24 Jan 2010 18:40:57 +0000

I cant believe the power of Awk… I was refused to change my grep for awk, but now… I’ll try awk!

By: Milos

Milos — Thu, 21 Jan 2010 01:03:44 +0000

Exchange line 100 of the original script from:
return 1
to this:
dump()
return 0
and change line 143 of the original script from:
dump()
to this
# dump()

and voila, you will get all solutions, not just the first one.
You can test it on this:

# multiple solutions
3 0 8 6 0 9 0 1 4
1 0 4 3 0 8 0 6 9
6 0 9 4 0 1 0 3 8

7 4 3 1 8 5 6 9 2
8 6 2 9 4 7 3 5 1
9 1 5 2 3 6 8 4 7

4 8 7 5 9 3 1 2 6
2 3 6 8 1 4 9 7 5
5 9 1 7 6 2 4 8 3

Have a nice evening

By: bill duncan

bill duncan — Sun, 17 Jan 2010 22:45:02 +0000

Thanks everyone for your comments!

I had put a teaser in the article suggesting a better/faster way to index the data in C. Anyone with some ideas on this?

By: CRB

CRB — Sun, 17 Jan 2010 13:32:24 +0000

Great article … it’s amazing what can be done with awk in short order. It’s refreshing to see an awk article that incorporates both the text manipulating power of awk and its ability to compute algorithms. Too many awk articles focus just on text file manipulation, nice job!

By: Jim Lemke

Jim Lemke — Sun, 17 Jan 2010 04:03:58 +0000

Awk is great for reports but I haven’t tried computing any algorithms with it! Interesting article.

By: bill duncan

bill duncan — Sat, 16 Jan 2010 17:42:00 +0000

Thanks for the feedback! Appreciate the comments..

Cheers.