(#~ </"1)@(#: i.@:(*/)) 5 5
(#: i.@:(*/)) is supported by special code.
Henry Rich
On 12/18/2015 8:45 AM, 'Jon Hough' via Programming wrote:
Thanks, odometer looks promising.
od1=: > @ , @ { @ (i.&.>"_)
(((0&{) < (1&{))"1 # ]) od1 5 5
0 1
0 2
0 3
0 4
1 2
1 3
1 4
2 3
2 4
3 4
# (((0&{) < (1&{))"1 # ]) od1 10 10
45
seems to work.
Thanks.
--------------------------------------------
On Fri, 12/18/15, Joe Bogner <[email protected]> wrote:
Subject: Re: [Jprogramming] Getting all pairs of integers up to some value
To: [email protected]
Date: Friday, December 18, 2015, 10:32 PM
odometer is definitely
the way to go compared to my idea
On Fri, Dec 18, 2015 at 8:29 AM, Raul Miller
<[email protected]>
wrote:
> http://www.jsoftware.com/jwiki/Essays/Odometer
might interest you.
>
> Thanks,
>
> --
> Raul
>
>
>
On Fri, Dec 18, 2015 at 7:58 AM, 'Jon Hough' via
Programming
> <[email protected]>
wrote:
>> I've spent an hour on
this, and am frustrated that I couldn't figure out a way
to do it (without using for_j or while).
>>
>> I want to get
all pairs ( pair order not important e.g. 2 3 is the same as
3 2) of integers up to some value.
>>
>> e.g. up to
4:
>>
>> 0 1
>> 0 2
>> 0 3
>> 1 2
>> 1 3
>> 2 3
>>
>> in frustration this is what I came up
with (for the case of 10):
>> /:~ ~.
/:~"1 (1000 # 2) ? 10
>>
>> which works but is not a very good
solution.
>>
>>
Any nice solutions?
>>
>> Thanks,
>>
>> Jon
>>
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>
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