3v4l.org

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<?php $a = array(0,1,2); $maxtries = intval(count($a)*(floatval(count($a)+1)/2.0)); $tries = 0; while(!empty($a) && $tries<$maxtries) { echo "Try number: $tries\n"; print_r($a); array_push($a, $a[$tries]); unset($a[$tries]); $tries += 1; } echo "done\n"; print_r($a);

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42.49 ms | 402 KiB | 5 Q