Here a first aproximation.
- define a list(unidimensional vector) For example the firs ten integer
numbers. q) is the prompt in Q system.
q) L: 1 2 3 4 5 6 7 8 9 10
- next, sum all integers
q) suminteger: sum L
- now, count elements of L
number: count L
-and to end, compute the mean
q) median: suminteger%number
Another way is
q) (sum L)%(count L)
5.5
In Q the function to obtain integers is til
q) til 10
0 1 2 3 4 5 6 7 8 9
Best,
Mikel
>
>
> > Message: 1
> Date: Mon, 16 Jan 2012 17:11:09 +0100
> From: Kim Kuen Tang <kuent...@vodafone.de>
> Subject: Re: [Jprogramming] Advantages of J over Q (aka K4/Kdb+)
> To: Programming forum <programming@jsoftware.com>
> Message-ID: <4f144c1d.90...@vodafone.de>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
>
> I tried to calculate the mean in K using tacit programming.
> (+/%# ) !10
> But it is not working. Can you show how to program it in K?
>
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