Note that
   (] <`(<@$:);.1~ [: ~:/\inv {. = ]) 1 1 2 2 3 3 4 2 3 4 4 1 2 2 2 1

also works.

On Fri, Nov 25, 2011 at 8:54 AM, Marc Simpson <[email protected]> wrote:

> Re: mangling, you might find this user style handy:
> http://userstyles.org/styles/52216/gmail-fixed-width. I just toggle it
> as needed.


Thank you!

I'm inclined to leave it on rather than toggle it, but it looks good.

Thanks again,

-- 
Raul

On Fri, Nov 25, 2011 at 8:50 AM, Raul Miller <[email protected]> wrote:

> Yes, I apologize.
>
> (I blame a mix of gmail's mangling of boxed display and my own lack of
> time yesterday.)
>
> And, since the problem is solved, I have nothing further to contribute.
>
> Thanks,
>
> --
> Raul
>
>
> On Thu, Nov 24, 2011 at 10:49 PM, Dan Bron <[email protected]> wrote:
>
>> Raul Miller wrote:
>> >     foo=: <^:{./.~ [: +/\ 0,2 ~:/\ ]
>>
>> REB asked for a foo such that:
>>
>>           foo 1 1 2 2 3 3 4 2 3 4 4 1 2 2 2 1
>>        +---+---------------------------+-+-------+-+
>>        |1 1|+---+---------+-+---------+|1|+-----+|1|
>>        |   ||2 2|+---+---+|2|+-+-----+|| ||2 2 2|| |
>>        |   ||   ||3 3|+-+|| ||3|+---+||| |+-----+| |
>>        |   ||   ||   ||4||| || ||4 4|||| |       | |
>>        |   ||   ||   |+-+|| || |+---+||| |       | |
>>        |   ||   |+---+---+| |+-+-----+|| |       | |
>>        |   |+---+---------+-+---------+| |       | |
>>        +---+---------------------------+-+-------+-+
>>
>> Your foo gives:
>>
>>           foo 1 1 2 2 3 3 4 2 3 4 4 1 2 2 2 1
>>         +---+-----+-------+-------+---+-----+---------+-+-------+-+
>>        |1 1|+---+|+-----+|+-----+|+-+|+---+|+-------+|1|+-----+|1|
>>        |   ||2 2|||+---+|||+---+|||2|||+-+|||+-----+|| ||2 2 2|| |
>>        |   |+---+|||3 3|||||+-+|||+-+|||3|||||+---+||| |+-----+| |
>>        |   |     ||+---+|||||4||||   ||+-+|||||4 4|||| |       | |
>>        |   |     |+-----+|||+-+|||   |+---+|||+---+||| |       | |
>>        |   |     |       ||+---+||   |     ||+-----+|| |       | |
>>        |   |     |       |+-----+|   |     |+-------+| |       | |
>>        +---+-----+-------+-------+---+-----+---------+-+-------+-+
>>
>> That is, you have the depth of each element right, but you still need to
>> group the elements appropriately.  It helps to think of 1 1 2 2 3 3 4 2 3
>> 4
>> 4 1 2 2 2 1 as representing a parenthesized expression, with greater
>> numbers
>> being more deeply nested.
>>
>> -Dan
>>
>> ----------------------------------------------------------------------
>> For information about J forums see http://www.jsoftware.com/forums.htm
>>
>
>
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