PHP Quick Sort Method

 
 = $right) {        return;    }    $mark _num = $arr [$left];    $mark _k = $left;    $i = $left +1;    $j = $right;    while ($i! = $j) {        //left shift judgment while        ($arr [$j] > $mark _num && $j > $i) {            $j--;        }        Right shift judgment        while ($arr [$i] <= $mark _num && $i < $j) {            $i + +;        }        $tmp = $arr [$i];        $arr [$i] = $arr [$j];        $arr [$j] = $tmp;       }    if ($arr [$i] < $mark _num) {        $arr [$mark _k] = $arr [$i];        $arr [$i] = $mark _num;    }    QuickSort ($left, $i-1);    QuickSort ($i +1, $right);    return $arr;}

The above describes the PHP fast sorting method, including the content, I hope that the PHP tutorial interested in a friend helpful.

