/**
* This function compares all the human ages and returns them in a sorted array
*
* @access public
* @author rasmus <*****@*****.**>
* @param Human $a first compared human
* @param Human $b second compared human
* @return int return <samp>0</samp> if <code>$a</code> and <code>$b</code> are equal, <samp>-1</samp> or <samp>1</samp> if <code>$a</code> is smaller than <code>$b</code>
*/
public static function compare($a, $b)
{
if ($a->getAge() == $b->getAge()) {
return 0;
}
return $a->getAge() < $b->getAge() ? -1 : 1;
}
