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

Asked by tqy on 19 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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