Quick Sort in-place implementation,quicksort_php Tutorial

Quick Sort In-place Implementation,quicksort

Running PHP http://www.compileonline.com/execute_php_online.php Online

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 Php2 functionSwap (&$a, &$b )3 {4     $c=$a;5     $a=$b;6     $b=$c;7 }8 9 /**Ten * Quick Sort One * Ascend A * In-place - */ - functionQuick_sort (&$a ) the { -     $s=Count($a);//size of a -     if($s< 2)return; -     $i= 0;//index of Pivot, for tracking pivot +     $pivot=$a[$i]; -     $l= 0;//swap Listener, if listens no swap, sort fini +  A //Swap those smaller than pivot to the left at      for($m= 0;$m<$s;$m++ ) -     { -         if($a[$m] <$a[$i] ) -         { -Swap$a[$m],$a[$i] ); -             $i=$m; in             $l++; -         } to     } +  -     //swap those larger than pivot to the right the      for($n= 0;$n<$i;$n++) *     { $         if($a[$n] >$a[$i] )Panax Notoginseng         { -Swap$a[$n],$a[$i] ); the             $i=$n; +             $l++; A         } the     } +  -     if($l= = 0)return; $     Else $l= 0; $Quick_sort ($a ); - } -  the $arr=Range(9, 0 ); -Quick_sort ($arr );Wuyi Echo implode( ', ',$arr ); the?>

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