public PuzzleSolver(IEnumerable <string> input)
{
_enhancementDictionary = new Dictionary <PixelBlock, PixelBlock>();
foreach (var line in input)
{
var splitResult = Regex.Split(line, " => ");
var rotatingBlock = new PixelBlock(splitResult[0]);
var valueBlock = new PixelBlock(splitResult[1]);
_enhancementDictionary.Add(rotatingBlock, new PixelBlock(valueBlock));
for (int i = 0; i < 3; i++)
{
var flipingBlock = rotatingBlock.FlipVertical;
if (!_enhancementDictionary.ContainsKey(flipingBlock))
{
_enhancementDictionary.Add(flipingBlock, valueBlock);
}
flipingBlock = rotatingBlock.FlipHorizontal;
if (!_enhancementDictionary.ContainsKey(flipingBlock))
{
_enhancementDictionary.Add(flipingBlock, valueBlock);
}
rotatingBlock = rotatingBlock.RotateRight;
if (!_enhancementDictionary.ContainsKey(rotatingBlock))
{
_enhancementDictionary.Add(rotatingBlock, valueBlock);
}
}
}
}
public int SolveSecond()
{
var block = new PixelBlock(InitialBlock);
for (int i = 0; i < 18; i++)
{
block = new PixelBlock(block.DivideBlocks().Select(pblock => _enhancementDictionary[pblock]));
}
return(block.ToString().Count(c => c == '#'));
}
public PixelBlock(PixelBlock pixelBlock)
{
_block = pixelBlock._block.Select(b => new BitArray(b)).ToList();
}
public bool Equals(PixelBlock other)
{
return(Equals(_block, other._block));
}