r =. 0 2 2 1 2 0 2 1 1 2 0 2 1 1 1 2 1 0 1 0 2 1 0 0 0 2 2 2 0 1
r
0 2 2 1 2 0 2 1 1 2 0 2 1 1 1 2 1 0 1 0 2 1 0 0 0 2 2 2 0 1
([ * +)/\.&.|. 1 , 2 ~:/\ r
1 2 0 1 2 3 4 5 0 1 2 3 4 0 0 1 2 3 4 5 6 7 8 0 0 1 0 0 1 2
Henry Rich
David Vincent-Jones wrote:
> I am looking to find the interval between repeating elements:
>
> Sample series:
> 0 2 2 1 2 0 2 1 1 2 0 2 1 1 1 2 1 0 1 0 2 1 0 0 0 2 2 2 0 1 ...
> Results:
> 1 2 1 2 3 4 5 1 2 3 4 1 2 3 4 5 6 7 8 1 1 2 .....
>
> In the above I would have found a 2, 5, 4, 8 and a 1
> I will tabulate the intervals over a very long series.
>
> The repetitions may be of any length of 0s,1s and 2s
>
> I am currently looking at some nasty brute force methods but would like
> to find some degree of elegance.
>
> David
>
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