php 排序算法程序不用递归

function quickSort(&$data, $beg, $end) 

02 { 

03 if ($end > $beg) { 

04 $piv = $data[$beg]; 

05 $k = $beg + 1; 

06 $r = $end; 

07 while ($k

08 if ($data[$k]

09 $k++; 

10 } else { 

11 $tmp = $data[$k]; 

12 $data[$k] = $data[$r]; 

13 $data[$r] = $tmp; 

14 $r--; 

15 } 

16 } 

17 if ($data[$k] >= $piv) { 

18 $k--; 

19 } 

20 $tmp = $data[$k]; 

21 $data[$k] = $data[$beg]; 

22 $data[$beg] = $tmp; 

23 quickSort($data, $beg, $k); 

24 quickSort($data, $r, $end); 

25 } 

26 } 

27   

28 function quickSort2(&$data) 

29 { 

30 $stack = array(); 

31 array_push($stack, array(0, count($data) - 1)); 

32 while (list($beg, $end) = array_pop($stack)) { 

33 if ($end > $beg) { 

34 $piv = $data[$beg]; 

35 $k = $beg + 1; 

36 $r = $end; 

37 while ($k

38 if ($data[$k]

39 $k++; 

40 } else { 

41 $tmp = $data[$k]; 

42 $data[$k] = $data[$r]; 

43 $data[$r] = $tmp; 

44 $r--; 

45 } 

46 } 

47 if ($data[$k] >= $piv) { 

48 $k--; 

49 } 

50 $tmp = $data[$k]; 

51 $data[$k] = $data[$beg]; 

52 $data[$beg] = $tmp; 

53 array_push($stack, array($beg, $k)); 

54 array_push($stack, array($r, $end)); 

55 } 

56 } 

57 } 

58   

59 $data = array(7,6,6,3,8,1,8,1,9,1,3,11,51,1,25); 

60 //selectSort($data); 

61 //insertSort($data); 

62 quickSort2($data);