After studying the many diverse methods that were put forward to solve my
"3-integers, no repeats or zeros" problem, I find I have learned quite a
few new J idioms, as well as some new uses for familiar primitives. Thanks
all so much for your efforts in all the solutions.
Quora has hundreds of these "math quiz" types of problems posted in their
forum. I have posted several of my own "brute force" solutions to various
Quora math problems using J. I find that trying to solve these types of
challenges is an excellent way to polish my J skills, as well as
demonstrate the concise power of J. My proficiency in J is still a far cry
from most of the participants on this forum, but I'm having fun learning.
Skip
Skip Cave
Cave Consulting LLC
On Mon, Aug 14, 2017 at 5:47 PM, 'Mike Day' via Programming <
programm...@jsoftware.com> wrote:
> Sorry for my poor coding of your suggestion!
>
> Either I hadn't spotted your own code, or perhaps I'd forgotten you'd
> posted it.
>
> Mike
>
>
>
> On 14/08/2017 21:21, Raul Miller wrote:
>
>> If you are going to time one of my implementations, I'd really prefer
>> you time the second one rather than the first one. It's approximately
>> 1500 times faster.
>>
>> To save you from having to reread my post, here's the implementation:
>>
>> require'stats'
>> perms=: A.&i.~ !
>> ,10#.(perms 3){"1/1+3 comb 9
>>
>> Thanks,
>>
>>
>
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