[Jprogramming] indices

[bill lam]

not sure if you mean successive delta,
    0,+/\(}:z)~:}.z
0 0 1 2 2 2 3 3 4 4
  or in tacit form
    (0 , [: +/\ }: ~: }.) z
0 0 1 2 2 2 3 3 4 4

adam dunne wrote:
> NB.suppose i have a list:
>    z=.5 5 2 20 20 20 60 60 2 2
>    =z
> 1 1 0 0 0 0 0 0 0 0
> 0 0 1 0 0 0 0 0 1 1
> 0 0 0 1 1 1 0 0 0 0
> 0 0 0 0 0 0 1 1 0 0
>    NB.how can i generate a list of what will be indices:
>    NB.  0 0 1 2 2 2 3 3 4 4
>    NB.from original list
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-- 
regards,
bill