- C# Sudoku solver source code For a while, I’ve wanted to build a little C# library to solve Sudoku puzzles. Something that would take the known values and figure out the values for the empty squares.
- I am a beginner in c:: you can understand that from my code:: Need help to make a Sudoku solver in c Requirements of the program: Input Sudoku:Done Read Sudoku: Done Validate function: (.
There are few national leaders who can say that they really understand technology. Even fewer of them have written actual programming code. Download game cooking mama mod. But Singapore's Prime Minister Lee Hsien Loong has outdone them all by posting the source code for a program he wrote to Facebook today. The PM asked for bug reports to boot.
Lee mentioned the program in a speech he gave at a reception on April 20 before IT industry leaders. 'The last program I wrote was a Sudoku solver in C++ several years ago, so I’m out of date,' he said. 'My children are in IT, two of them—both graduated from MIT. One of them browsed a book and said, 'Here, read this.' It was a textbook on the Haskell programming language, Lee recounted. 'One day that will be my retirement reading.'
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After the speech, Lee received a number of requests to see the code for his program. So today he posted a screenshot of the code along with a link to a Google Drive folder containing the source code, a sample of its output, and a compiled Windows (well, DOS command line) executable to his public Facebook page. 'The program is pretty basic: it runs at the command prompt, in a DOS window,' he wrote. 'Type in the data line by line (e.g. 1-3-8---6), then the solver will print out the solution (or all the solutions if there are several), the number of steps the program took searching for the solution, plus some search statistics.'
![Sudoku Sudoku](/uploads/1/2/6/1/126162077/875305840.png)
'Hope you have fun playing with this,' he concluded. 'Please tell me if you find any bugs!'
So, I'm working on a project for my Intro to Software Development course; it's a sudoku puzzle program. So far, I've encountered two big bugs:
1.) When I wrote the code in Visual C++, the display worked fine(it showed up on the
screen as a normal puzzle), but when I copied it over to linux, it displays an
entire line of the input file where only a single digit should go..Can anybody
help me out with that?
2.) At the main menu, after selecting 'e' to edit a square, it tells me that the input
coordinate is not valid. I'm not sure where the problem is there, either
1.) When I wrote the code in Visual C++, the display worked fine(it showed up on the
screen as a normal puzzle), but when I copied it over to linux, it displays an
entire line of the input file where only a single digit should go..Can anybody
help me out with that?
2.) At the main menu, after selecting 'e' to edit a square, it tells me that the input
coordinate is not valid. I'm not sure where the problem is there, either
Besides those two major bugs, it appears that everything else is working just fine for the time being. I'd very much appreciate any help that anyone can offer! Thanks a bunch!
(I have yet to develop the algorithms for solving the puzzle, so the last few function definitions are left empty intentionally)
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- commentLatest Postby StuXYZLatest Post
StuXYZ731
Well I can't repeat the first error. the board looks fine.
The problem with the second error is a simple mistake, so no problem. You wrote this
![C++ C++](/uploads/1/2/6/1/126162077/424523358.png)
You input the value into the THIRD coordinate of the char array. There is NO boundary
checking and there is obviously for any input a buffer overflow.
checking and there is obviously for any input a buffer overflow.
Your conditional test for coordinate[0] and coordinate[1] looks wrong.
Test that with '11' 'AA' entries and I think you will quickly find the problem.
Test that with '11' 'AA' entries and I think you will quickly find the problem.
Finally: If I get this to mark, I would be deducting serious marks for the excessive comments. Do you really really need to write the functions in peudo-code and then write the same function? Please unless you absolutely HAVE to have such a pointless comment, write a comment that says what the function is going to do e.g.
Sudoku In C
The code and the pseudo code are nearly the same, it doesn't help to say
i++; // add one to i
.The principle is don't repeat code, and don't repeat code in the comments. How to tell if a car has been tuned.
Obviously this is broken by every C++ book because they are trying to teach what the code means, but you know what the code means. Comment should be for the why and what, not how. e.g. Why do I want an to smooth this data, and that I am using a quadratic summation smoothing, but the code tells me that I am looping over all the points in the data, so no comment is necessary.
Sorry about the rant, had a bad code review today, with a junior dev. who has more than enough ability to have known better by now!
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Edited by StuXYZ: n/a