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collection_mystery5

Write the output produced by the following function when passed each of the following queues. Assume that print_helper($arr) prints a collection in the of a comma-separated array surrounded by [] brackets, similar to that seen for each input. Note: A stack displays/prints in [bottom ... top] order, and a queue displays in [front ... back] order.

For example, if the state of $q and $s were [0, 1] and [2, 3], respectively, when printed in the given function, the expected answer would be: 

q=[0, 1]
s=[2, 3]
        
function collection_mystery5($q) {
    $s = [];
    $size = count($q);

    for ($i = 0; $i < $size; $i++) {
        $n = array_shift($q);
        if ($n % 2 == 0) {
            array_push($s, $n);
        } else {
            array_shift($q, $n);
        }
    }

    print("q=" . print_helper($q));
    print("s=" . print_helper($s));
}
[1, 2, 3, 4, 5, 6]
[42, -3, 4, 15, 9, 71]
[30, 20, 10, 60, 50, 40, 3, 0]

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