heapsort(PHP) 

<?
//堆排序应用
class heapsort
  {
    var $a;
    function setarray($a)//取得数组
      {
        $this->a=$a;
      }
    function runvalue($b,$c)//$a 代表数组，$b代表排序堆,$c代表结束点,
      {
        while($b<$c)
          {
            $h1=2*$b;
            $h2=(2*$b+1);
            if($h1>$c)
              break;
            elseif($h1==$c)
              {
                if($this->a[$b]>$this->a[$h1])
                  {
                    $t=$this->a[$b];
                    $this->a[$b]=$this->a[$h1];
                    $this->a[$h1]=$t;
                    $la=1;
                  }
                else
                  $la=1;
              }
            elseif(($this->a[$b]>$this->a[$h1])||($this->a[$b]>$this->a[$h2]))
              {
                if($this->a[$h1]>=$this->a[$h2])
                  {
                    $t=$this->a[$h2];
                    $this->a[$h2]=$this->a[$b];
                    $this->a[$b]=$t;
                    $b=$h2;
                  }
                else
                  {
                    $t=$this->a[$h1];
                    $this->a[$h1]=$this->a[$b];
                    $this->a[$b]=$t;
                    $b=$h1;
                  }
              }
            else
              $la=1;
            if($la==1)
              break;
          }
      }
    function getarray()
      {
        $all=count($this->a);
        $b=Floor(($all-1)/2);
        for($i=$b;$i>=1;$i--)//先将数组建立成堆
          {
            $this->runvalue($i,($all-1));
          }
        for($i=1;$i<$all;$i++)
          {
            $a1=($all-$i);
            if($i==1)
              {
                $t=$this->a[1];
                $this->a[1]=$this->a[$a1];
                $this->a[$a1]=$t;
              }
            else
              {
                $end=($all-$i);
                $this->runvalue(1,$end);
                $t=$this->a[1];
                $this->a[1]=$this->a[$end];
                $this->a[$end]=$t;
              }
          }
        return $this->a;
      }
  }
//////
class sortarr
  {
    var $a;
    function setarray($a)//取得数组
      {
        $this->a=$a;
      }
    function runvalue($i)
      {
        $max=$this->a[$i];
        $id=$i;
        for($j=($i+1);$j<count($this->a);$j++)
          {
            if($this->a[$j]>$max)
              {
         &nb