/*
* Determines if a Sudoku puzzle is correct or not
* Validation rules defined by https://en.wikipedia.org/wiki/Sudoku
* If any variant on the classic Sudoku puzzle is needed in the future:
* - Each puzzle type would need to have to override two methods for Processing and Validation
* - Would need to tell the machine what type of game we're playing, may be tough to decide if it's a 9x9 Classic or a 9x9 Classic with a slight variation in the rules
*
* Notes:
* A .txt file must be used, several are included in the \bin\Debug\netcoreapp3.1 folder
* If a file has empty lines or spaces, but still has a 9x9 valid grid, it is considered valid
* It will consider a Sudoku puzzle invalid if:
* - One column contains more than 9 digits
* - One row contains more than 9 digits
* - Any entry is not a numeric value
* - Any numeric value is not between 1-9
*
* Implementation notes:
* - Used a byte 2 dimentional array because it's smaller in size (0-255) compared to shorts or integers (32k or 2.1m)
* - Validated the file data before checking the individual regions
* - I considered adding a auto run for test files (anything in a folder) but I wanted to keep the main program simple
*/
static void Main()
{
bool userIsTesting = true;
Console.WriteLine("Current directory the text files must be in: " + Directory.GetCurrentDirectory());
while (userIsTesting)
{
Console.WriteLine(" ");
Console.WriteLine("Enter file name:");
string fileName = Console.ReadLine();
string filePath = Directory.GetCurrentDirectory() + @"\" + fileName;
ClassicSudoku classicSudoku = new ClassicSudoku(filePath);
string[] rawData = classicSudoku.GetRawSudokuGrid(classicSudoku.FilePath);
byte[,] sudokuGrid = classicSudoku.ProcessAndValidateRawSudokuGrid(rawData);
Console.WriteLine(classicSudoku.ValidateGrid(sudokuGrid) ? "Yes, valid" : "No, invalid");
Console.WriteLine("Press enter to exit the console or any key to continue testing \n");
var input = Console.ReadKey();
if (input.Key == ConsoleKey.Enter)
{
userIsTesting = false;
}
}
}
private void Solve_Click(object sender, EventArgs e)
{
ClassicSudoku Sudoku = new ClassicSudoku(Grid.Value);
Sudoku.Solve();
if (Sudoku.Verify())
{
Grid.Populate(Sudoku.Value);
}
else
{
MessageBox.Show("The sudoku could not be solved.");
}
}
