Sudoku solver

[David Hayden]

(03-07-2019 03:01 PM)Simone Cerica Wrote:  Sudoku Solver by David Hayden:

"Sudoku solver written in User RPL, C, and C++. Solves any sudoku with 1 solution in less than 3 seconds on a 50g. Requires a 49g+ or 50g (or other ARM-based model). Includes full source code. Many thanks to Tony Hutchins and his "SUDOKU for the 49g+" for inspiring this program."

https://www.hpcalc.org/details/7062

3 seconds? I think I got it down to 0.25s after using C code to handle the input/output array directly. I'll check when I get home. I'll check the "no solution" case also.

Dave