(% 4 * >:@i.@#) _4 {:\ +/\ 1&p: 3 5 7 9 13 17 21 25 31 37 43 49
0.75 0.625 0.666667
Henry Rich
On 9/25/2011 4:46 PM, Don Guinn wrote:
> Apply the 1&p: to the list before doing the infixes. Cuts down the number of
> times 1&p: is invoked. But why are you adding one to the number of items in
> each infix? Seems like the 3 5 7 9 should give 0.75, not 0.6 .
>
> ((+/%#)&,)\_4,\1 p:3 5 7 9 13 17 21 25 31 37 43 49
>
> On Sun, Sep 25, 2011 at 1:47 PM, David Vaughan<[email protected]
>> wrote:
>
>> I've done: verb&,\
>>
>> I arranged the list to be of shape 'x 4'. This seems to work. The problem
>> I'm now having is that my verb is slow. Can this be refined (significantly)?
>>
>> +/@:(1&p:) % 1&+@:#
>>
>> It takes finds the percentage of items in the list which are prime.
>>
>> On 25 Sep 2011, at 20:04, Don Guinn wrote:
>>
>>> verb=.<
>>> (verb&,)\_4,\3 5 7 9 13 17 21 25 31 37 43 49
>>> +-------+-------------------+-------------------------------+
>>> |3 5 7 9|3 5 7 9 13 17 21 25|3 5 7 9 13 17 21 25 31 37 43 49|
>>> +-------+-------------------+-------------------------------+
>>>
>>>
>>> On Sun, Sep 25, 2011 at 12:44 PM, David Vaughan<
>>> [email protected]> wrote:
>>>
>>>> I'm trying to apply a verb to infixes of length 4 but I want it to be
>>>> cumulative. i.e. in the list:
>>>>
>>>> 3 5 7 9 13 17 21 25 31 37 43 49
>>>>
>>>> I want:
>>>>
>>>> verb 3 5 7 9
>>>> verb 3 5 7 9 13 17 21 25
>>>> verb 3 5 7 9 13 17 21 25 31 37 43 49
>>>>
>>>> Any help? Thanks.
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