perry-mitchell / sudoku-generator-cs

Sudoku board generator for C#

Sudoku Board Generator

Sudoku board generator for C#

Usage

Compile the application, and use like so:

generator <workers> <puzzles> <output>

Where:

• workers is the number of threads to use for processing.
• puzzles is the number of puzzles you would like to generate.
• output is the directory in which to write the puzzles.

Another generator? Really?

This board generator was used in my Aivoterveydeksi! application build for iOS. I used this utility to generate thousands of boards to bundle with the app. You can read about why here.

Plans

This project may be revisited later for an overhaul, as it was never intended to be made public. I do have plans to release a NodeJS version as well, so that may take priority.

sudoku-generator-cs's Issues

Thread termination message order has unexpected behavior

I've added thread numbers to the output of the foreach-loop in the main thread:

foreach (Thread t in threads)
{
	t.Join();
	Console.WriteLine($"Thread #{threads.IndexOf(t)} terminated.");
}

This shows the following result:

The reason behind this is that t.join() does join the first thread from that list and stay there.

A possible workaround would be having the worker itself report its termination, and keep this list without output.

numPuzzles does not take into account numWorkers

The workers use messenger.getMaxPuzzles() to check the number of remaining puzzles to generate.

This does not take into account the number of workers. For example using 16 threads for 32 puzzles makes you end up with 47 puzzles in total.

A workaround is lowering the numPuzzles with the number of threads.

Missing project file

Hi!

Thanks a lot of sharing this code under the MIT license; I might use it for a project of mine!
I hope you don't mind me opening a few issues that I've encountered - that might help you or others on improving/using this code.

The first thing I noticed was a missing project file. I've loaded the code into an empty .NET Core 3.1 project and everything does run out of the box.