sudoku_solver | ⏱️ A fast sudoku solver using constraint propagation | Performance Testing library

I've stumbled upon an interesting phenomenon while I was tinkering with my sudoku solving algorithm written in Python.

I'm counting iterations in the backtracking algorithm and saving the number in a log file. (The algorithm seems to be completely deterministic, hence I'm intrigued by the sudden increase in the number of iterations to get the same output.)

Now the interesting part is:

When I tried to run the same code with PyPy (3.7-v7.3.3-win32) instead of Python 3.8 (64bit) the number of iterations about doubled when running with PyPy to 629505 from the 362073 with running with CPython.

My question is: Does anyone know why is this difference in the number of iterations?

Log:

Currently working on a small sudoku solver, i use the boolean

I am using eclipse 3.2020 on WIN10 and I have a problem executing my main function.

When I run the program as it is, I get no output to conole, even when I add a printf in the first line, and the exit code is -1,073,741,819. When I comment out/ delete the line solve(s); the code run as intended and gives exit code 0.

Edit: added full code (both solve and print_sol are in solver.c)

Edit 2: As mentioned in the comments, the problem was in the code (bug) and not eclipse, I just assumed that an error message will be printed if there is one.

p.s.: I still find the fact a printf in the start won't print if there is a runtime error in another part of the main function quite weird.

main.c:

I'm practising my little Python skills by programming a Sudoku-Solver Algorithm.

I implemented unit test to. Now I have implemented the solver, that returns a solved matrix of the Sudoku, and I check it in the unit tests.

But the result var assigned by the return of the solver result None. I made some Breakpoints and at the end of the solver the return value ist the right solved matrix. Can someone give me a hint in which point I'm missing something?

Thanks a lot!

My sudoku Algorithm class:

So, I'm trying to draw a rectangle on a JPanel (Rect), that's then added to my main JFrame. The rectangle is supposed to be in the middle of my window, but instead it's outside the window.

Things I've tried:

• Adding a JPanel to JFrame and then adding Rect to the JPanel, no changes.
• Setting JFrames layout to null, rectangle disappears nowhere to be seen.

Relevant code:

Main.java

While displaying value to a textview on second activity getting error as

expecting member declaration

This is my code for Another Activity: