public virtual void NormalSyanten(SortedTilesEnumerator tiles, ref int result)
{
if (tiles.Count % 3 == 0)
{
throw new ArgumentException("牌数量不能是3的倍数。", nameof(tiles));
}
var args = new SyantenArgs {
Result = result,
MinValue = 1 - tiles.Count % 3
};
NormalSyantenCutPair(tiles.Tiles, tiles.Count, args);
result = args.Result;
}
private static void NormalSyantenCutPair(int[] tiles, int count, SyantenArgs args)
{
if (args.Result == args.MinValue)
{
return;
}
for (int i = 0; i < 34; i++)
{
if (tiles[i] >= 2)
{
tiles[i] -= 2;
NormalSyantenCut3(tiles, 0, count - 2, (count / 3) | 0x01000000, args);
tiles[i] += 2;
}
}
NormalSyantenCut3(tiles, 0, count, count / 3, args);
}
private static void NormalSyantenCut3(int[] tiles, int i, int remCount, int argsTuple, SyantenArgs args)
{
if (args.Result == args.MinValue)
{
return;
}
while (i < 34 && tiles[i] == 0)
{
i++;
}
if (i == 34)
{
NormalSyantenCut2(tiles, 0, remCount, argsTuple, args);
return;
}
ref int curr = ref tiles[i];
