private bool AfterShipStatus(BothShore shore, uint shipMissionaryNumber, uint shipCannibalNumber)
{
if (shipMissionaryNumber + shipCannibalNumber > 2)
{
throw new Exception("The boat can load 2 guys at most!");
}
if (StartSide == SideEnum.Left)
{
if (shore.LeftShore.MissionaryNumber < shipMissionaryNumber || shore.LeftShore.CannibalNumber < shipCannibalNumber)
{
return(false);
}
shore.LeftShore.MissionaryNumber -= shipMissionaryNumber;
shore.LeftShore.CannibalNumber -= shipCannibalNumber;
return(true);
}
if (StartSide == SideEnum.Right)
{
if (shore.RightShore.MissionaryNumber < shipMissionaryNumber || shore.RightShore.CannibalNumber < shipCannibalNumber)
{
return(false);
}
shore.RightShore.MissionaryNumber -= shipMissionaryNumber;
shore.RightShore.CannibalNumber -= shipCannibalNumber;
return(true);
}
return(false);
}
static void Main(string[] args)
{
var status = new BothShore(0, 0, 3, 3);
var boat = new BoatStrategy(); //{ StartSide = SideEnum.Right };
var statusStack = new Stack <BothShore>();
statusStack.Push(statusStack);
var strategyStack = new Stack <BoatStrategy>();
var currentStatus = status;
/*
* //L 0 0
* L 0 1
* L 0 2
* L 1 0
* L 2 0
* L 1 1
* //R 0 0
* R 0 1
* R 0 2
* R 1 0
* R 2 0
* R 1 1
*
* //* L 0 0
* //* R 0 0
* //* 不能无限循环
*/
while (!currentStatus.IsPassRiverSuccessful())
{
uint formerStrategyIndex = 1;
for (uint index = formerStrategyIndex, index <= 10, index++)
{
boat.AfterShipStatus(BoatStrategy.Strategies[index], status);
statusStack.Push(status);
strategyStack.Push(BoatStrategy.Strategies[index]);
currentStatus = status;
if (!status.ValidateWholeStatus())
{
currentStatus = statusStack.Pop();
strategyStack.Pop();
}
//if(currentStatus.IsPassRiverSuccessful())
//{
// break;
//}
}
}
Console.ReadKey();
}
public bool AfterShipStatus(StrategyEnum strategy, BothShore shore)
{
/*
* L 0 1
* L 0 2
* L 1 0
* L 2 0
* L 1 1
* R 0 1
* R 0 2
* R 1 0
* R 2 0
* R 1 1
*/
switch (strategy)
{
case StrategyEnum.StrategyEnum1:
return(AfterShipStatus(shore, SideEnum.Left, 0, 1));
case StrategyEnum.StrategyEnum2:
return(AfterShipStatus(shore, SideEnum.Left, 0, 2));
case StrategyEnum.StrategyEnum3:
return(AfterShipStatus(shore, SideEnum.Left, 1, 0));
case StrategyEnum.StrategyEnum4:
return(AfterShipStatus(shore, SideEnum.Left, 2, 0));
case StrategyEnum.StrategyEnum5:
return(AfterShipStatus(shore, SideEnum.Left, 1, 1));
case StrategyEnum.StrategyEnum6:
return(AfterShipStatus(shore, SideEnum.Right, 0, 1));
case StrategyEnum.StrategyEnum7:
return(AfterShipStatus(shore, SideEnum.Right, 0, 2));
case StrategyEnum.StrategyEnum8:
return(AfterShipStatus(shore, SideEnum.Right, 1, 0));
case StrategyEnum.StrategyEnum9:
return(AfterShipStatus(shore, SideEnum.Right, 2, 0));
case StrategyEnum.StrategyEnum10:
return(AfterShipStatus(shore, SideEnum.Right, 1, 1));
}
}