Nice,

Perhaps I should more time reading and less time at quick hacks.  ;-)

Cheers, bob


> On Nov 27, 2017, at 8:36 AM, Raul Miller <[email protected]> wrote:
> 
> http://code.jsoftware.com/wiki/Essays/Odometer
> 
>   sper=: ] #.^:_1 i.@^~
> 
> Thanks,
> 
> -- 
> Raul
> 
> 
> On Mon, Nov 20, 2017 at 2:49 AM, 'Skip Cave' via Programming
> <[email protected]> wrote:
>> How to find the permutations of y objects taken x at a time?
>> 
>>    3 sper 4
>> 
>> 0 1 2
>> 
>> 0 1 3
>> 
>> 0 2 1
>> 
>> 0 2 3
>> 
>> 0 3 1
>> 
>> 0 3 2
>> 
>> 1 0 2
>> 
>> 1 0 3
>> 
>> 1 2 0
>> 
>> 1 2 3
>> 
>> 1 3 0
>> 
>> 1 3 2
>> 
>> 2 0 1
>> 
>> 2 0 3
>> 
>> 2 1 0
>> 
>> 2 1 3
>> 
>> 2 3 0
>> 
>> 2 3 1
>> 
>> 3 0 1
>> 
>> 3 0 2
>> 
>> 3 1 0
>> 
>> 3 1 2
>> 
>> 3 2 0
>> 
>> 3 2 1
>> 
>> 
>>    2 sper 4
>> 
>> 0 1
>> 
>> 0 2
>> 
>> 0 3
>> 
>> 1 0
>> 
>> 1 2
>> 
>> 1 3
>> 
>> 2 0
>> 
>> 2 1
>> 
>> 2 3
>> 
>> 3 0
>> 
>> 3 1
>> 
>> 3 2
>> 
>>    1 sper 4
>> 0
>> 1
>> 2
>> 3
>> 
>> Skip
>> ----------------------------------------------------------------------
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> ----------------------------------------------------------------------
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