Indices more compact:
([:; <@( (+/@])`(*/@])`(>./@])`($0:)@.(3 <. (|{.)))"_1)
Hallo R.E. Boss, je schreef op 02-02-10 11:52:
> Or tacitly (NB. wrap around)
>
> (5 ?.@$ 4) ([:; <@( (+/@])`(*/@])`(>./@])`($0:)@.([: ]`3:@.(2<]) (|{.))
> )"0 1) 5 4 ?.@$ 20
> 52 19 38 30
>
>
>
>
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Met vriendelijke groet,
=@@i