public int LastStoneWeight(int[] stones)
{
MaxPQ maxPQ = new MaxPQ(stones);
while (maxPQ.Count() >= 2)
{
int x = maxPQ.RemoveMax();
int y = maxPQ.RemoveMax();
if (x != y)
{
maxPQ.Insert(Math.Abs(x - y));
}
}
if (maxPQ.IsEmpty())
{
return(0);
}
else
{
return(maxPQ.RemoveMax());
}
}