Re: eliminate results

wrote on 26 jul 2008 in comp.lang.javascript:

> Hello.
> 
> I receive from a database a variable number of results.


Seems school assignment to me.

 
> In my page, I can show a maximum of 36 results.
> 
> I want to "neatly" eliminate the exceeding results.
> 
> For example:
> say, we have 40 results.
> I must eliminate 4 results.
> -->I must never eliminate the first and the last.
> 
> So, I have:
> 34-4=30;
> 30/4 returns 7,5 (rounded = 7);
> 
> the elements to eliminate will be:
> 7, 14, 21, 28
> 
> I must automate this procedure...
> 
> I tried the following solution:
> 
> // hardcoded number of results for testing purposes
> totResults = 150;
> // maximum number of items
> maxItems = 36;
> //
> p = totResults/maxItems;
> //
> temp = [];
> for (i=0; i<maxItems+1; i++) {
>         temp[Math.ceil(p*i)] = Math.ceil(p*i);
> 
>}
> 
> The creation of undefined elements is perfectly functional to my
> purposes, so please don't worry about it.
> 
> The fact is that this algorhitm works in a certain number of cases but
> sometimes it doesn't, dued to rounding issues.
> 
> Could someone help me? Thanks!
> 



-- 
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress)