how to find highest and second highest number in an array without using max function

Vote count:

0

I already have solution. But i think it will be more optimizable. So please provide me a solution for it. And remember that don't use predefined function of php. Like max() function. i know there are so many ways to find it but i want best and better solution. Because my array contains more than 1 lakh records and it's taking lot of time. Or sometime site will be down.

My code :

<?php 

$array = array('1', '15', '2','10',4);

echo "<pre>";
print_r($array);
echo "<pre>";
$max = 0;
$s_max=0;

for($i=0; $i<count($array); $i++)
{
    $a = $array[$i];
    $tmax = $max;
    $ts_max = $s_max;
    if($a > $tmax && $a > $ts_max)
    {
        $max = $a;
        if($tmax > $ts_max) {
            $s_max = $tmax;
        } else {
            $s_max = $ts_max;
        }
    } else if($tmax > $a && $tmax > $ts_max)
    {
        $max = $tmax;
        if($a > $ts_max) {
            $s_max = $a;
        } else {
            $s_max = $ts_max;
        }
    } else if($ts_max > $a && $ts_max > $tmax)
    {
        $max = $ts_max;
        if($a > $tmax)
        {
            $s_max = $a;
        } else {
            $s_max = $tmax;
        }
    }
}
echo "Max=".$max;
    echo "<br />";
    echo "S_max=".$s_max;
    echo "<br />";

?>

asked 43 secs ago

Lakhan

33

how to find highest and second highest number in an array without using max function