# Anyone know what does the Problem 58. Tic Tac Toe FTW in cody mean?

Asked by tqy on 19 Aug 2012
Latest activity Commented on by Image Analyst on 20 Aug 2012

Given a tic tac toe board:

1 represents X

0 represents empty.

-1 represents O

It is X's move. If there is an immediate win possibility, choose a square for an immediate win. Otherwise return 0.

Return absolute index of the square of choice. If multiple square are valid, return them in order.

Example:

``` Input  a = [ 1  0  1
-1  1  0
0 -1 -1]
Output wins is [4 8]```

Can anyone explain it in detail?

I'm confused with the sentence I marked ans bold style.

Thanks a lot~~~

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## 2 Answers

Answer by Walter Roberson on 19 Aug 2012

"Absolute index" is "linear index".

## 1 Comment

tqy on 20 Aug 2012

Thanks~~~

Answer by Image Analyst on 19 Aug 2012

Here are the linear indexes:

```1 4 7
2 5 8
3 6 9
```

They go down columns first, and then across rows from left to right. I don't see how [4 or 8] would be "wins." Indexes 3 and 4 would be a win for "1", while index 3 would be a win for "-1". Are you sure it says 8 is supposed to be a win for X (1)?

## 2 Comments

Image Analyst on 20 Aug 2012

It won't let me look at it. " This problem is locked. You need to solve more problems from Cody Challenge group to unlock it." Anyway, did what I say make sense to you?

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