Nothing is simpler than the i. approach, but ^: is not significantly
more complex than $: approach:
}:(}:,+/@(_2&{.),>:@{:)^:9]4
4 9 15 22 30 39 49 60 72
Thanks,
--
Raul
On Thu, Sep 28, 2017 at 3:37 PM, Xiao-Yong Jin <[email protected]> wrote:
>
>
>> On Sep 28, 2017, at 1:40 PM, Raul Miller <[email protected]> wrote:
>>
>> That is what I would assume:
>>
>> 4,(4+5),(4+5+6),(4+5+6+7),(4+5+6+7+8)
>> 4 9 15 22 30
>>
>> I was trying to figure out a recursive approach which isn't vastly
>> more tedious...
>
> 4( [, +( ([,+)`$:@.(10>]) ) >:@])5
>
> On the other hand, ^: can be used, but I don't see any simpler.
>
>>
>> Thanks,
>>
>> --
>> Raul
>>
>>
>> On Thu, Sep 28, 2017 at 2:39 PM, Roger Hui <[email protected]> wrote:
>>> You don't mean
>>>
>>> +/\4+i.10
>>> 4 9 15 22 30 39 49 60 72 85
>>>
>>> do you?
>>>
>>>
>>>
>>> On Thu, Sep 28, 2017 at 11:33 AM, Skip Cave <[email protected]> wrote:
>>>
>>>> What is a good way to generate this sequence in J?
>>>>
>>>> 4,(4+5),(4+5+6),(4+5+6+7),(4+5+6+7+8)+.....
>>>>
>>>> Show one way using i. and insert.
>>>>
>>>> Show another way using recursion.
>>>>
>>>> Skip
>>>>
>>>> Skip Cave
>>>> Cave Consulting LLC
>>>> ----------------------------------------------------------------------
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>>> ----------------------------------------------------------------------
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>
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