foo=: /: 3|3+*
   foo i:10
0 1 2 3 4 5 6 7 8 9 10 _10 _9 _8 _7 _6 _5 _4 _3 _2 _1

-- 
Raul

On Fri, Oct 22, 2021 at 5:14 AM R.E. Boss <[email protected]> wrote:
>
> Some time ago I stumbled on an elegant solution to sort a sequence of numbers 
> such, that first the non-negative numbers were sorted up, immediately 
> followed by the negative numbers sorted up, like
>
> foo i: 10
> 0 1 2 3 4 5 6 7 8 9 10 _10 _9 _8 _7 _6 _5 _4 _3 _2 _1
>
> Any takers?
>
>
> R.E. Boss
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