hw5 q3

[Dana Hurlbut]

I'm probably being really dense here, but what does "Starting from
TestGame.java..." mean in this context? Am I supposed to include a
test of DisplayTree in TestGame's main, or use TestGame.java in some
other way?

[Betty O'Neil]

It just means start from that code and add to it, changing the
class name of course.

[Dana Hurlbut]

Thank you! I have another question. In our notes from class 16,
towards the bottom, you give what the first few lines of the output of
DisplayTree1:

[] [] (1 next) (level 0)
[] [] (done) (level 1)
[1] [] (2 next) (level 1)
[1] [] (done) (level 1)
[1] [2] (1 next) (level 2)
[1] [2] (done) (level 3)
[1, 3] [2] (2 next) (level 4)

Is that last line correct? When I did it it only got down to level
3... when [1,3][2] is the state, it's not 2's turn next -- the game is
done. In other words, I thought those first few lines should look
like:

[] [](1 next), level 0
[] [](done), level 1
[1] [](2 next), level 1
[1] [](done), level 2
[1] [2](1 next), level 2
[1] [2](done), level 3
[1, 3] [2](done), level 3

[Dana Hurlbut]

Sorry, one more question on hw5!

I'm trying to understand what to do in question 4. I think I'm not
quite sure what counts as a distinct game state. Should there just be
26 different game states (one for each line)? If you'd be able to post
an example of the first 5 or 10 output lines for DisplayTree2 that
would be really helpful. Thanks.

On Mar 31, 4:32 pm, "Betty O'Neil" <eon...@cs.umb.edu> wrote:

[Betty O'Neil]

Dana--
Yes, you're right. Thanks for the report. I've fixed class 15's notes.
--Betty O.

[Dana Hurlbut]

Thanks! So for part 4, would the correct first few lines of the output
be the following, or am I misunderstanding what's meant by distinct
game states?

[] [](1 next), level 0, G0
[] [](done), level 1, G1
[1] [](2 next), level 1, G2
[1] [](done), level 2, G3
[1] [2](1 next), level 2, G4
[1] [2](done), level 3, G5
[1, 3] [2](done), level 3, G6

[Betty O'Neil]

No, your states named G1 and G5 are in fact equal by Game.equals.
I've added the first 7 lines of output for both DisplayTree1 and
DisplayTree2 to hw5.html, with the following for DisplayTree2:
[] [](1 next)(level 0): G0
[] [](done)(level 1): G1
[1] [](2 next)(level 1): G2
[1] [](done)(level 2): G3
[1] [2](1 next)(level 2): G4
[1] [2](done)(level 3): G1 <-- first repeated state
[1, 3] [2](done)(level 3): G5
G1 is the state where the game is over and player 2 won. It doesn't matter
to Game's equals method (Easy's equals) how the win was made.
The toString() display shows that the two G1 states were reached in
different ways. We see that two Game objects g1 and g2 can have g1.equals(g2),
but different toString() values, at least if the game is over. What matters
here is the equals result. See the Javadoc for equals.

[Jing Shi]

Hi, Professor

I have a question. Are we supposed to deliver .java back to cs310/pa4/games  or cs310/hw5/games

Thanks

[Betty O'Neil]

Deliver your whole games project back to pa4/games, including the
.java files in the pa4/games/src/cs310 directory. Then it's
easy to test them there.