Array

Ewoud Dronkert wrote:
> And, is there only one index value for each personid??

One salary figure, I mean. It do seems likely to have only one salary per
person, also the sorting wouldn't make sense otherwise.

A far better data structure would probably be, in pseudo code:
$person[] = array('id' => (int), 'name' => (string), 'salary' => (float));

Then the solution would be:

function cmp($a, $b) {
return $a['salary'] - $b['salary'];
}

Or a little safer:

function cmp($a, $b) {
$e = 0.01;
$t = $a['salary'] - $b['salary'];
if ( $t >= $e ) return 1;
if ( $t <= -$e ) return -1;
return 0;
}

Followed by:

usort($person, 'cmp');
foreach ( $person as $p )
printf('%3d %-20s %8.2f', $p['id'], $p['name'], $p['salary']);

--
E. Dronkert
 >> Stay informed about: Array 

That worked perfect, thank you very much.

Next problem is for me to calculate:
Total and avg. value of the 25 highest paid workers
Total and avg. value of the 50 highest paid workers
I can do it by looping through the array, is there a way to do it in one
command?



"Ewoud Dronkert" skrev i en meddelelse

> Ewoud Dronkert wrote:
>> And, is there only one index value for each personid??
>
> One salary figure, I mean. It do seems likely to have only one salary per
> person, also the sorting wouldn't make sense otherwise.
>
> A far better data structure would probably be, in pseudo code:
> $person[] = array('id' => (int), 'name' => (string), 'salary' => (float));
>
> Then the solution would be:
>
> function cmp($a, $b) {
> return $a['salary'] - $b['salary'];
> }
>
> Or a little safer:
>
> function cmp($a, $b) {
> $e = 0.01;
> $t = $a['salary'] - $b['salary'];
> if ( $t >= $e ) return 1;
> if ( $t <= -$e ) return -1;
> return 0;
> }
>
> Followed by:
>
> usort($person, 'cmp');
> foreach ( $person as $p )
> printf('%3d %-20s %8.2f', $p['id'], $p['name'], $p['salary']);
>
> --
> E. Dronkert
 >> Stay informed about: Array