public static EightPuzzleBoard getResult(EightPuzzleBoard state, IAction action)
{
EightPuzzleBoard result = new EightPuzzleBoard(state);
if (EightPuzzleBoard.UP.Equals(action) && state.canMoveGap(EightPuzzleBoard.UP))
{
result.moveGapUp();
}
else if (EightPuzzleBoard.DOWN.Equals(action) && state.canMoveGap(EightPuzzleBoard.DOWN))
{
result.moveGapDown();
}
else if (EightPuzzleBoard.LEFT.Equals(action) && state.canMoveGap(EightPuzzleBoard.LEFT))
{
result.moveGapLeft();
}
else if (EightPuzzleBoard.RIGHT.Equals(action) && state.canMoveGap(EightPuzzleBoard.RIGHT))
{
result.moveGapRight();
}
return(result);
}
public static ICollection <IAction> getActions(EightPuzzleBoard state)
{
ICollection <IAction> actions = CollectionFactory.CreateQueue <IAction>();
if (state.canMoveGap(EightPuzzleBoard.UP))
{
actions.Add(EightPuzzleBoard.UP);
}
if (state.canMoveGap(EightPuzzleBoard.DOWN))
{
actions.Add(EightPuzzleBoard.DOWN);
}
if (state.canMoveGap(EightPuzzleBoard.LEFT))
{
actions.Add(EightPuzzleBoard.LEFT);
}
if (state.canMoveGap(EightPuzzleBoard.RIGHT))
{
actions.Add(EightPuzzleBoard.RIGHT);
}
return(actions);
}