public void RandomPop_WithEmptySpan_Throws()
{
int[] array = new int[0];
Assert.Throws <IndexOutOfRangeException>(
() => Spans.PopRandom(new Random(), new Span <int>(array)));
}
public void RandomPop_WithOneValue_ReturnsValueAndLeavesUnchanged()
{
Span <int> span = stackalloc int[1];
span[0] = 5;
Assert.Equal(5, Spans.PopRandom(new Random(), span));
Assert.Equal(5, span[0]);
}
public void RandomPop_WithManyValues_ReturnsValueAndSwapsValueToEnd()
{
Span <int> span = stackalloc int[5] {
0, 1, 2, 3, 4
};
Assert.Equal(1, Spans.PopRandom(new Random(1234), span));
Assert.Equal(new int[5] {
0, 4, 2, 3, 1
}, span.ToArray());
}
private static bool _TrySolveRandomly(Guesser <TPuzzle> guesser, Random rand)
{
if (guesser.IsSolved)
{
return(true);
}
Span <Guess> guesses = stackalloc Guess[guesser.MaxGuessCount];
var guessCount = guesser.PopulateBestGuesses(guesses);
while (guessCount > 0)
{
ref Guess guess = ref Spans.PopRandom(rand, guesses[0..guessCount--]);
private bool _TrySolveRandomly(SquareTracker <TPuzzle> tracker, Random random)
{
if (tracker.Puzzle.NumEmptySquares == 0)
{
return(true);
}
Coordinate c = tracker.GetBestCoordinateToGuess();
Span <int> possibleValues = stackalloc int[tracker.Puzzle.Size];
int numPossible = tracker.PopulatePossibleValues(in c, possibleValues);
while (numPossible > 0)
{
int possibleValue = Spans.PopRandom(random, possibleValues[0..numPossible--]);