Codility Answer 04 PART02

Here is my answers to Cod1l1ty training lesson 04 - PART02.

PassingCars

function solution($A) {
    $tot = 0;
    foreach($A as $val) {
        $tot += $val;
    }
    
    $pass = 0;
    $curr = 0;
    foreach($A as $val) {
        if($val == 0) {
            $pass += ($tot - $curr);
        }
        
        $curr += $val;
    }
    
    return ($pass > 1000000000 ? -1 : $pass);
}

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GenomicRangeQuery

function solution($S, $P, $Q) { $n = strlen($S); $s = []; for($i = 0; $i < $n; $i++) { switch($S[$i]) { case 'A': $s[] = 1; break; case 'C': $s[] = 2; break; case 'G': $s[] = 3; break; default: $s[] = 4; break; } } $n = count($P); $ret = []; for($i = 0; $i < $n; $i++) { $min = 0; for($j = $P[$i]; $j <= $Q[$i]; $j++) { if($min == 1) { break; } if($min > $s[$j] || $min == 0) { $min = $s[$j]; } } $ret[] = $min; } return $ret; }
Note: not 100% yet