public override bool addToFrontier(PuzzleState aState)
{
//We only want to add the new state to the fringe if it doesn't exist
// in the fringe or the searched list.
if (Searched.Contains(aState) || Frontier.Contains(aState))
{
return(false);
}
else
{
Frontier.AddLast(aState);
return(true);
}
}
public override bool addToFrontier(PuzzleState aState)
{
//if this state has been found before,
if (Searched.Contains(aState) || Frontier.Contains(aState))
{
//discard it
return(false);
}
else
{
//else put this item on the end of the queue;
Frontier.AddLast(aState);
return(true);
}
}
