Looks like the hook caught you.
factorslla =: [: */"1 [: > [: { [: ([: < ( ^ ([: i. >:)))"0/ __ q: ]
factorsllb =: [: */"1 [: > [: { [: ([: < [ ^ [: i. >: )"0/ __ q: ]
$factorslla 3894
1 1 1 1
$factorsllb 3894
1 1 1 1
(factorslla -: factorsllb) 3894
1
-Dan
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Linda Alvord
Sent: Wednesday, February 20, 2013 5:15 AM
To: [email protected]
Subject: Re: [Jprogramming] Recursive programming (and scoping therein)
When can you remove the inner parentheses from the right safely? I would
apply the functions from right to left.
f=: [: */"1 [: > [: { [: ([: < ^ [: i. >:)"0/ __ q: ]
f 3894
|domain error: f
| f 3894
factorslla
[: */"1 [: > [: { [: ([: < (^ ([: i. >:)))"0/ __ q: ]
factorslla
[: */"1 [: > [: { [: ([: < (^ ([: i. >:)))"0/ __ q: ]
factorslla 3894
1 59
11 649
3 177
33 1947
2 118
22 1298
6 354
66 3894
Linda
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Linda Alvord
Sent: Wedn]esday, February 20, 2013 4:30 AM
To: [email protected]
Subject: Re: [Jprogramming] Recursive programming (and scoping therein)
I never stopped believing it was possible in simple J! Kip once you chopped
it up with "each" and "every" it came apart.
factrs=: */&>@{@((^ i.@>:)&.>/)@q:~&__ factrs 72
1 3 9
2 6 18
4 12 36
8 24 72
ii=:[: < (^ ([: i. >:))
A=:__ q: ]
f=:([:ii"0 / A)
f 72
--------T-----┐
│1 2 4 8│1 3 9│
L-------+------
g=: 13 :'*/"1>{ f y'
g 72
1 3 9
2 6 18
4 12 36
8 24 72
factorslla=: 13 :'*/"1>{([:([: < (^ ([: i. >:)))"0 /(__ q: ]))y'
factorslla 72
1 3 9
2 6 18
4 12 36
8 24 72
factorslla
[: */"1 [: > [: { [: ([: < (^ ([: i. >:)))"0/ __ q: ]
Linda
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of km
Sent: Sunday, February 17, 2013 6:50 PM
To: [email protected]
Subject: Re: [Jprogramming] Recursive programming (and scoping therein)
And this is what I came up with. Adverbs every and each are in the z
locale. --Kip
NB. Notice spelling
factors =: [: */every [: { [: (^ [: i. >:)each/ __ q: ]
every
&>
each
&.>
factors 60
1 5
3 15
2 10
6 30
4 20
12 60
Sent from my iPad
On Feb 16, 2013, at 10:16 PM, km <[email protected]> wrote:
> Linda, here is a suggestion:
>
> factrs=: */&>@{@((^ i.@>:)&.>/)@q:~&__
> factrs 60
> 1 5
> 3 15
>
> 2 10
> 6 30
>
> 4 20
> 12 60
>
> factrs1=: */&>@:{@:((^ i.@:>:)&.>/)@:q:~&__
> factrs1 60
> 1 5
> 3 15
>
> 2 10
> 6 30
>
> 4 20
> 12 60
>
> Now you can worry less about ranks.
>
> Kip
>
> Sent from my iPad
>
>
> On Feb 16, 2013, at 9:13 PM, "Linda Alvord" <[email protected]>
wrote:
>
>> I am trying to write factrs in simple J. I hit two snags:
>>
>> factrs=: */&>@{@((^ i.@>:)&.>/)@q:~&__
>> 5!:6 <'factrs'
>> ((((((*/)&>)@{)@(((^ (i.@>:))&.>)/))@q:)~)&__
>> factrs 500
>> 1 5 25 125
>> 2 10 50 250
>> 4 20 100 500
>>
>> f=:((((((*/)&>)@{)@(((^ (i.@>:))&.>)/))@q:)~)&__
>> g=:(((^ (i.@>:))&.>)/)
>> g
>> (^ i.@>:)&.>/
>> g 500
>> 500
>>
>> f=:((((((*/)&>)@{)@g)@q:)~)&__
>> h=:(((*/)&>)@{)
>> h
>> */&>@{
>> h 500
>> 500
>>
>> f=:(((h@g)@q:)~)&__
>> f
>> h@g@q:~&__
>>
>> gg=: 13 :'(<( ^ [: i. >:)>)/ y'
>> hh=: 13 :'*/"1>"0{y'
>>
>> ff=:(((hh@g)@q:)~)&__
>> ff 500
>> 1 5 25 125
>> 2 10 50 250
>> 4 20 100 500
>>
>> ff=:(((hh@gg)@q:)~)&__
>> ff 500
>> |length error: gg
>> | ff 500
>> |[-24] c:\users\owner\j701-user\temp\52.ijs
>>
>> I can't understand gg well enough to adjust the rank.
>>
>> What does &__ mean?
>>
>> Linda
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