/// <summary>
/// 组合
/// </summary>
/// <param name="curItem">当前项</param>
/// <param name="itemIndex">项索引</param>
private void ToCombination()
{
while (_stk.Count > 0)
{
CombinationItem <T> item = _stk.Pop();
ICombinationState curSender = item.Sender;
if (curSender.DoBuy(item.Item))
{
item.TotlePoint += item.Item.GetPoint();
if (curSender.LeftMoney == 0)
{
_queItems.Enqueue(item);
}
else
{
for (int i = item.ItemIndex; i < _lstItems.Count; i++)
{
ICombinationState newSender = curSender.CopyCombination();
CombinationItem <T> newitem = new CombinationItem <T>(_lstItems[i], i, newSender, item);
_stk.Push(newitem);
}
}
}
}
}
/// <summary>
/// 组合项
/// </summary>
/// <param name="previous"></param>
public CombinationItem(T item, int itemIndex, ICombinationState sender, CombinationItem <T> previous)
{
_item = item;
_previous = previous;
_sender = sender;
_itemIndex = itemIndex;
if (previous != null)
{
TotlePoint = previous.TotlePoint;
}
}
/// <summary>
/// 返回组合合
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
public List <T> ToList()
{
List <T> lst = new List <T>();
CombinationItem <T> item = this;
do
{
lst.Add(item.Item);
item = item.Previous;
} while (item != null);
return(lst);
}
/// <summary>
/// 开始组合
/// </summary>
private void DoCombination(ICombinationState sender)
{
_queItems = new Queue <CombinationItem <T> >();
_stk = new Stack <CombinationItem <T> >();
for (int i = 0; i < _lstItems.Count; i++)
{
ICombinationState curSender = sender.CopyCombination();
CombinationItem <T> item = new CombinationItem <T>(_lstItems[i], i, curSender, null);
_stk.Push(item);
}
ToCombination();
}
public CombinationItem <T> GetMaxPoint(ICombinationState sender)
{
DoCombination(sender);
if (_queItems.Count == 0)
{
return(null);
}
CombinationItem <T> maxPoint = _queItems.Peek();
foreach (CombinationItem <T> obj in _queItems)
{
if (obj.TotlePoint > maxPoint.TotlePoint)
{
maxPoint = obj;
}
}
return(maxPoint);
}
