public void IsEmpty_PQWithOneElement_ReturnsFalse()
{
MaxPQ <int> pq = new MaxPQ <int>(100);
pq.Insert(1);
Assert.IsFalse(pq.IsEmpty());
}
public void IsEmpty_AfterRemovingLastElement_ReturnsTrue()
{
MaxPQ <int> pq = new MaxPQ <int>(100);
pq.Insert(1);
pq.DelMax();
Assert.IsTrue(pq.IsEmpty());
}
static void Main(string[] args)
{
// 输入格式： buy 20.05 100
var buyer = new MaxPQ <Ticket>();
var seller = new MinPQ <Ticket>();
var n = int.Parse(Console.ReadLine());
for (var i = 0; i < n; i++)
{
var ticket = new Ticket();
var item = Console.ReadLine().Split(' ');
ticket.Price = double.Parse(item[1]);
ticket.Share = int.Parse(item[2]);
if (item[0] == "buy")
{
buyer.Insert(ticket);
}
else
{
seller.Insert(ticket);
}
}
while (!buyer.IsEmpty() && !seller.IsEmpty())
{
if (buyer.Max().Price < seller.Min().Price)
{
break;
}
var buy = buyer.DelMax();
var sell = seller.DelMin();
Console.Write("sell $" + sell.Price + " * " + sell.Share);
if (buy.Share > sell.Share)
{
Console.WriteLine(" -> " + sell.Share + " -> $" + buy.Price + " * " + buy.Share + " buy");
buy.Share -= sell.Share;
buyer.Insert(buy);
}
else if (buy.Share < sell.Share)
{
sell.Share -= buy.Share;
seller.Insert(sell);
Console.WriteLine(" -> " + buy.Share + " -> $" + buy.Price + " * " + buy.Share + " buy");
}
else
{
Console.WriteLine(" -> " + sell.Share + " -> $" + buy.Price + " * " + buy.Share + " buy");
}
}
}
public void maxpq()
{
MaxPQ <string> pq = new MaxPQ <string>();
string item = "vonNeumann 2/12/1994 4732.35";
if (!item.Equals("-"))
{
pq.insert(item);
}
else if (!pq.IsEmpty())
{
print(pq.delMax() + " ");
}
print("(" + pq.size() + " left on pq)");
}
static int Test(int n, MaxPQ <int> pq)
{
var timer = new Timer(1000);
timer.Elapsed += new ElapsedEventHandler(StopRunning);
for (var i = 0; i < n; i++)
{
pq.Insert(random.Next());
}
var delCount = 0;
StartRunning();
timer.Start();
while (isRunning && !pq.IsEmpty())
{
pq.DelMax();
delCount++;
}
timer.Stop();
return(delCount);
}
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());
}
}
public void IsEmpty_InitalizedPQ_ReturnsTrue()
{
MaxPQ <int> pq = new MaxPQ <int>(100);
Assert.IsTrue(pq.IsEmpty());
}