PHP implements quick sort algorithm_PHP tutorial

function quicksort($seq) {

  if (count($seq) > 1) {

    $k = $seq[0];

    $x = array();

    $y = array();

    for ($i=1; $i

      if ($seq[$i] <= $k) {

        $x[] = $seq[$i];

      } else {

        $y[] = $seq[$i];

      }

    }

    $x = quicksort($x);

    $y = quicksort($y);

    return array_merge($x, array($k), $y);

  } else {

    return $seq;

  }

}

 

$arr = array(12,2,16,30,8,28,4,10,20,6,18);

print_r(quicksort($arr));

?>

http://www.bkjia.com/PHPjc/478709.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/478709.htmlTechArticle?php function quicksort($seq) { if (count($seq) 1) { $k = $seq[0]; $x = array(); $y = array(); for ($i=1; $icount($seq); $i++) { if ($seq[$i] = $k) { $x[] = $seq[$i]; } else { $y[]...