[Jprogramming] "Limited" Permutations

[David Vaughan]

Thanks, this seems to work, however I am a little confused about what #inv
(#^:_1) actually does - could you explain that please?

Thanks.

On Thu, Jun 21, 2012 at 4:02 PM, Raul Miller <rauldmiller at gmail.com> wrote:

> Here's one approach:
>
> OTHER=: >,{;~1 -.~i.10
> MASK=: (#~ 8=+/"1) #:i.2^10
>
>   ,/MASK ([ + -.@[ #inv ])"1/ OTHER
>
> --
> Raul
>
> On Thu, Jun 21, 2012 at 10:51 AM, David Vaughan <purpleblues13 at gmail.com>
> wrote:
> > Hi, I'm trying to generate all permutations of length 10 with eight 1s
> and two other digits (not 1s).
> > For example,
> > 1 1 1 1 3 1 4 1 1 1
> > 5 1 1 1 1 9 1 1 1 1
> > ...
> >
> > Could anyone point me in the right direction?
> >
> > Many thanks.
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