JS实现快速排序算法

 1         <script type="text/javascript">
 2             var arr=[6,7,8,3,4,5,9];
 3             function quicksort(left,right){
 4                 if(left>right){
 5                     return ;
 6                 }
 7                 var temp=0;
 8                 var i=right;
 9                 var j=left;
10                 temp=arr[left];
11                 while(arr[i]>arr[left]){
12                     i--;
13                 }
14                 while(arr[j]<=arr[left]){
15                     j++;
16                 }
17                 if(i>j){
18                     temp=arr[i];
19                     arr[i]=arr[j];
20                     arr[j]=temp;
21                     quicksort(left,right);
22                 }
23                 else{
24                     arr[left]=arr[i];
25                     arr[i]=temp;
26                     quicksort(left,i-1);
27                     quicksort(i+1,right);
28                 }
29             }
30             quicksort(0,6);
31             console.log(arr);
32         </script>

 1         <script type="text/javascript">
 2             var a=[6,7,8,3,4,5,9];
 3             function quicksort(left,right){
 4                 var i,j,t,temp;
 5                 if(left>right){
 6                     return;
 7                 }        
 8                 temp=a[left];
 9                 i=left;
10                 j=right;
11                 while(i!=j){
12                     while(a[j]>=temp&&i<j){
13                         j--;
14                     }
15                     while(a[i]<=temp&&i<j){
16                         i++;
17                     }
18                     if(i<j){
19                         t=a[i];
20                         a[i]=a[j];
21                         a[j]=t;
22                     }
23                 }
24                 a[left]=a[i];
25                 a[i]=temp;
26                 quicksort(left,i-1);
27                 quicksort(i+1,right);
28                 return;
29             }
30             quicksort(0,6);
31             console.log(a);
32         </script>