public OrderStatusType PlaceSellOrder(StockQuote quote, double price, double volume)
{
if (!OpenedPositions.TryGetValue(quote.Ticker, out var openedPosition))
{
return(OrderStatusType.DeniedNoOpenPosition);
}
if (!price.InOpenRange(quote.Low, quote.High))
{
return(OrderStatusType.DeniedOutOfRange);
}
if (volume >= openedPosition.Volume)
{
volume = openedPosition.Volume;
OpenedPositions.Remove(quote.Ticker);
}
else
{
openedPosition.Decrease(volume);
}
TheLedger.Add(new StockTransaction
{
Ticker = quote.Ticker,
Date = quote.DateParsed,
Price = price,
Volume = volume,
TransactionType = StockTransactionType.Sell
});
UpdateBalance(price, volume, StockTransactionType.Sell);
return(OrderStatusType.Accepted);
}
public int Solve()
{
int n2 = N * 2;
int[,] result = new int[n2 + 1, N + 1];
for (int i = 1; i <= N; i++)
{
result[n2, i] = 0;
}
result[n2, 0] = 1;
for (int position = n2 - 1; position >= 0; position--)
{
for (int opened = 0; opened <= N; opened++)
{
result[position, opened] = 0;
if (opened > 0 && !OpenedPositions.Contains(position))
{
result[position, opened] += result[position + 1, opened - 1];
}
if (opened < N)
{
result[position, opened] += result[position + 1, opened + 1];
}
}
}
return(result[0, 0]);
}
public OrderStatusType PlaceBuyOrder(StockQuote quote, double price, double volume)
{
if (Balance * 1.001 <= price * volume)
{
return(OrderStatusType.DeniedInsufficientFunds);
}
if (!price.InOpenRange(quote.Low, quote.High))
{
return(OrderStatusType.DeniedOutOfRange);
}
var isPositionOpened = OpenedPositions.ContainsKey(quote.Ticker);
var newPosition = new OpenedPosition {
Price = price, Volume = volume
};
if (isPositionOpened)
{
OpenedPositions[quote.Ticker] += newPosition;
}
else
{
OpenedPositions.Add(quote.Ticker, newPosition);
}
TheLedger.Add(new StockTransaction
{
Ticker = quote.Ticker,
Date = quote.DateParsed,
Price = price,
Volume = volume,
TransactionType = StockTransactionType.Buy
});
UpdateBalance(price, volume, StockTransactionType.Buy);
return(OrderStatusType.Accepted);
}