算法之冒泡排序(php版)

  //冒泡
    $a = array(2,1,3,9,8,4,5);

    $count = count($a);
        
    for ($i=0; $i < $count; $i++) { 
        # code...
        for ($j=0; $j < $count-1; $j++) { 
            # code...
            if ($a[$j] > $a[$j+1]) {

                $tmp = $a[$j+1];
                $a[$j+1] = $a[$j];
                $a[$j] = $tmp;

            }
        }
    }

    print_r($a);