public Board Solve(Board board)
{
var possibilityCalculator = new PossibilityCalculator(board);
// Get the brute force possibilities
var bruteForceSolvingPossibilities = new List <BruteForceSolvingPossibility>();
for (var line = 0; line < board.Lines; line++)
{
for (var column = 0; column < board.Columns; column++)
{
var value = board.GetBoardValue(line, column);
if (!value.IsProvided)
{
bruteForceSolvingPossibilities.Add(
new BruteForceSolvingPossibility()
{
Column = column,
Line = line,
Possibilities = possibilityCalculator.PossibilitiesFor(line, column)
}
);
}
}
}
// Brute force solve the board
return(GetSolution(board, bruteForceSolvingPossibilities, 0));
}
public void PossibilitiesFor_ExistingValueTest()
{
var boardHash =
"123456789" +
"234567891" +
"345678912" +
"456789123" +
"567891234" +
"678912345" +
"789123456" +
"891234567" +
"912345678";
var board = (new BoardHash()).LoadFromHash(boardHash);
var possibilityCalculator = new PossibilityCalculator(board);
for (var line = 0; line < board.Lines; line++)
{
for (var column = 0; column < board.Columns; column++)
{
Assert.AreEqual(
board.GetBoardValue(line, column).Value,
possibilityCalculator.PossibilitiesFor(line, column).First()
);
}
}
}
public void PossibilitiesFor_EmptyFields()
{
// Arrange
var boardHash = new BoardHash();
var testSet = GetTestSet();
foreach (var assert in testSet)
{
// Act
var board = boardHash.LoadFromHash(assert.Hash);
var possibilityCalculator = new PossibilityCalculator(board);
var actual = possibilityCalculator.PossibilitiesFor(assert.Line, assert.Column);
// Assert
CollectionAssert.AreEqual(assert.ExpectedResult, actual);
}
}
// Get the board randomly filled
private Board GetRandomBoard(string hash)
{
var result = _boardHash.LoadFromHash(hash);
var possibilityCalculator = new PossibilityCalculator(_boardHash.LoadFromHash(hash));
for (var line = 0; line < result.Lines; line++)
{
for (var column = 0; column < result.Columns; column++)
{
var value = result.GetBoardValue(line, column);
if (!value.IsProvided)
{
var possibilities = possibilityCalculator.PossibilitiesFor(line, column);
var rnd = _random.Next(possibilities.Count);
var newValue = possibilities[rnd];
result.SetBoardValue(line, column, new BoardValue(newValue));
}
}
}
return(result);
}