Next I want to create the table from only a, b and c as input data. Any
thoughts?
a=:'*'
b=:i:4
c=:i:_4
d=:b*/c
over2=: 13 :'({.;}.)":x,y'
by2=: 13 : '('' *''&;,.x) ,.y'
c by2 b over2 d
┌──┬─────────────────────────────┐
│ *│ _4 _3 _2 _1 0 1 2 3 4│
├──┼─────────────────────────────┤
│ 4│_16 _12 _8 _4 0 4 8 12 16│
│ 3│_12 _9 _6 _3 0 3 6 9 12│
│ 2│ _8 _6 _4 _2 0 2 4 6 8│
│ 1│ _4 _3 _2 _1 0 1 2 3 4│
│ 0│ 0 0 0 0 0 0 0 0 0│
│_1│ 4 3 2 1 0 _1 _2 _3 _4│
│_2│ 8 6 4 2 0 _2 _4 _6 _8│
│_3│ 12 9 6 3 0 _3 _6 _9 _12│
│_4│ 16 12 8 4 0 _4 _8 _12 _16│
└──┴─────────────────────────────┘
over
({. ; }.)@":@,
over2
[: ({. ; }.) [: ": ,
by
' *'&;@,.@[ ,. ]
by2
] ,.~ [: ' *'&; [: ,. [
Raul’s is still the shortest. Linda
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of km
Sent: Saturday, November 02, 2013 6:55 PM
To: [email protected]
Subject: Re: [Jprogramming] Times Table Therapy
See the last example in
http://www.jsoftware.com/docs/help701/dictionary/d602.htm
==Kip
Sent from my iPad
>
>> On Nov 2, 2013, at 12:21 PM, "Linda Alvord" <[email protected]> wrote:
>>
>> How about 4 boxes instead of 2 for this? Note the two labels or “axes”,
>> correspond to the conventional numbering of the x-axis and y-axis in
>> Cartesian graphs.
>> a=:'*'
>> b=:i:4
>> c=:i:_4
>> d=:b*/c
>> (' *',":,.c);b,d
>> ┌──┬─────────────────────────────┐
>> │ *│ _4 _3 _2 _1 0 1 2 3 4│
>> │ 4│_16 _12 _8 _4 0 4 8 12 16│
>> │ 3│_12 _9 _6 _3 0 3 6 9 12│
>> │ 2│ _8 _6 _4 _2 0 2 4 6 8│
>> │ 1│ _4 _3 _2 _1 0 1 2 3 4│
>> │ 0│ 0 0 0 0 0 0 0 0 0│
>> │_1│ 4 3 2 1 0 _1 _2 _3 _4│
>> │_2│ 8 6 4 2 0 _2 _4 _6 _8│
>> │_3│ 12 9 6 3 0 _3 _6 _9 _12│
>> │_4│ 16 12 8 4 0 _4 _8 _12 _16│
>> └──┴─────────────────────────────┘
>>
>> Linda
>>
>> -----Originaforl Message-----
>> From: [email protected]
>> [mailto:[email protected]] On Behalf Of km
>> Sent: Saturday, November 02, 2013 10:43 AM
>> To: [email protected]
>> Subject: Re: [Jprogramming] Times Table Therapy
>>
>> Perhaps you can find a way to use Format ":
>>
>> --Kip Murray
>>
>> Sent from my iPad
>>
>>> On Nov 2, 2013, at 9:17 AM, "Linda Alvord" <[email protected]> wrote:
>>>
>>> I better do it myself. (I may call for help...) Thanks for the offer.
>>> Linda
>>>
>>> -----Original Message-----
>>> From: [email protected]
>>> [mailto:[email protected]] On Behalf Of Raul
>>> Miller
>>> Sent: Saturday, Novembere 02, 2013 8:07 AM
>>> To: Programming forum
>>> Subject: Re: [Jprogramming] Times Table Therapy
>>>
>>> Do you want an explanation? Or would it be more fun to work it out by
>>> yourself?
>>>
>>> Thanks,
>>>
>>> --
>>> Raul
>>>
>>>
>>>
>>> On Sat, Nov 2, 2013 at 7:37 AM, Ben Gorte - CITG
>>> <[email protected]>wrote:
>>>
>>>> Do you mean the over/by thing of
>>>> http://www.jsoftware.com/help/dictionary/intro03.htm ?
>>>>
>>>> over =: ({. ; }.)@":@,
>>>> by =: ' '&;@,.@[ ,. ]
>>>> b by (c over d)
>>>> ┌──┬─────────────────────────────┐
>>>> │ │ 4 3 2 1 0 _1 _2 _3 _4│
>>>> ├──┼─────────────────────────────┤
>>>> │_4│_16 _12 _8 _4 0 4 8 12 16│
>>>> │_3│_12 _9 _6 _3 0 3 6 9 12│
>>>> │_2│ _8 _6 _4 _2 0 2 4 6 8│
>>>> │_1│ _4 _3 _2 _1 0 1 2 3 4│
>>>> │ 0│ 0 0 0 0 0 0 0 0 0│
>>>> │ 1│ 4 3 2 1 0 _1 _2 _3 _4│
>>>> │ 2│ 8 6 4 2 0 _2 _4 _6 _8│
>>>> │ 3│ 12 9 6 3 0 _3 _6 _9 _12│
>>>> │ 4│ 16 12 8 4 0 _4 _8 _12 _16│
>>>> └──┴─────────────────────────────┘
>>>>
>>>> (not that I competely understand it, by the way).
>>>>
>>>> Ben
>>>> ________________________________________
>>>> From: [email protected] [
>>>> [email protected]] on behalf of Linda Alvord
>>>> [ [email protected]]
>>>> Sent: Saturday, November 02, 2013 11:27
>>>> To: [email protected]
>>>> Subject: [Jprogramming] Times Table Therapy
>>>>
>>>> Maybe these will be better boxes.
>>>>
>>>> a=:' '
>>>> b=:i:4
>>>> c=:i:_4
>>>> d=:b*/c
>>>>
>>>> b,d
>>>> _4 _3 _2 _1 0 1 2 3 4
>>>> _16 _12 _8 _4 0 4 8 12 16
>>>> _12 _9 _6 _3 0 3 6 9 12
>>>> _8 _6 _4 _2 0 2 4 6 8
>>>> _4 _3 _2 _1 0 1 2 3 4
>>>> 0 0 0 0 0 0 0 0 0
>>>> 4 3 2 1 0 _1 _2 _3 _4
>>>> 8 6 4 2 0 _2 _4 _6 _8
>>>> 12 9 6 3 0 _3 _6 _9 _12
>>>> 16 12 8 4 0 _4 _8 _12 _16
>>>>
>>>> ]e=:(<b),:<d
>>>> ------------------------------┐
>>>> │_4 _3 _2 _1 0 1 2 3 4 │
>>>> +-----------------------------+
>>>> │_16 _12 _8 _4 0 4 8 12 16│
>>>> │_12 _9 _6 _3 0 3 6 9 12│
>>>> │ _8 _6 _4 _2 0 2 4 6 8│
>>>> │ _4 _3 _2 _1 0 1 2 3 4│
>>>> │ 0 0 0 0 0 0 0 0 0│
>>>> │ 4 3 2 1 0 _1 _2 _3 _4│
>>>> │ 8 6 4 2 0 _2 _4 _6 _8│
>>>> │ 12 9 6 3 0 _3 _6 _9 _12│
>>>> │ 16 12 8 4 0 _4 _8 _12 _16│
>>>> L------------------------------
>>>>
>>>> ]f=:(<a),:<,.c
>>>> ---┐
>>>> │ │
>>>> +--+
>>>> │ 4│
>>>> │ 3│
>>>> │ 2│
>>>> │ 1│
>>>> │ 0│
>>>> │_1│
>>>> │_2│
>>>> │_3│
>>>> │_4│
>>>> L---
>>>>
>>>> f,.e
>>>> ---T-----------------------------┐
>>>> │ │_4 _3 _2 _1 0 1 2 3 4 │
>>>> +--+-----------------------------+
>>>> │ 4│_16 _12 _8 _4 0 4 8 12 16│
>>>> │ 3│_12 _9 _6 _3 0 3 6 9 12│
>>>> │ 2│ _8 _6 _4 _2 0 2 4 6 8│
>>>> │ 1│ _4 _3 _2 _1 0 1 2 3 4│
>>>> │ 0│ 0 0 0 0 0 0 0 0 0│
>>>> │_1│ 4 3 2 1 0 _1 _2 _3 _4│
>>>> │_2│ 8 6 4 2 0 _2 _4 _6 _8│
>>>> │_3│ 12 9 6 3 0 _3 _6 _9 _12│
>>>> │_4│ 16 12 8 4 0 _4 _8 _12 _16│
>>>> L--+------------------------------
>>>>
>>>>
>>>>
>>>> -------------------------------------------------------------------
>>>> --
>>>> - For information about J forums see
>>>> http://www.jsoftware.com/forums.htm
>>>> -------------------------------------------------------------------
>>>> --
>>>> - For information about J forums see
>>>> http://www.jsoftware.com/forums.htm
>>> --------------------------------------------------------------------
>>> -- For information about J forums see
>>> http://www.jsoftware.com/forums.htm
>>>
>>> --------------------------------------------------------------------
>>> -- For information about J forums see
>>> http://www.jsoftware.com/forums.htm
>> ---------------------------------------------------------------------
>> - For information about J forums see
>> http://www.jsoftware.com/forums.htm
>> ---------------------------------------------------------------------
>> - For information about J forums see
>> http://www.jsoftware.com/forums.htm
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