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SudokuGenerator.cs
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SudokuGenerator.cs
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using System;
namespace PlaySudoku
{
public class SudokuGenerator
{
private readonly SudokuSolver solver;
private readonly Random random;
public SudokuGenerator(SudokuSolver solver)
{
this.solver = solver;
this.random = new Random();
}
public SudokuBoard GeneratePuzzle(Difficulty difficulty)
{
SudokuBoard board = new SudokuBoard();
solver.Solve(board);
int numbersToRemove;
switch (difficulty)
{
case Difficulty.Easy:
numbersToRemove = random.Next(20, 31);
break;
case Difficulty.Medium:
numbersToRemove = random.Next(40, 51);
break;
case Difficulty.Hard:
numbersToRemove = random.Next(60, 71);
break;
default:
throw new ArgumentException("Ungültige Schwierigkeitsstufe.");
}
for (int i = 0; i < numbersToRemove; i++)
{
int row, col;
do
{
row = random.Next(9);
col = random.Next(9);
} while (board.GetCell(row, col).Value == 0);
board.SetCell(row, col, 0, false);
}
for (int row = 0; row < 9; row++)
{
for (int col = 0; col < 9; col++)
{
if (board.GetCell(row, col).Value != 0)
{
// Wenn die Zelle einen Wert hat, dann wird sie auf 'fixed' gesetzt, damit der Benutzer sie nicht ändern kann
board.GetCell(row, col).IsFixed = true;
}
}
}
return board;
}
}
}