快速排序(Object-c)

1. +(NSMutableArray *)kuaisuMethodTest:(NSMutableArray *)dataArray low:(int )lowIndex high:(int)highIndex{    

2. //    NSMutableArray *data=[[NSMutableArray alloc] initWithObjects:@"5",@"4",@"2",@"8",@"1",@"7",@"9",@"6",nil];

3.     if (lowIndex<highIndex) {

4.         int i=lowIndex,j=highIndex;

           int vot=[[dataArray objectAtIndex:i] intValue];

           while (i!=j) {

               while (i<j && vot<=[[dataArray objectAtIndex:j] intValue]) j--;

               NSLog(@"j=======%d",j);

5.             if (i<j) {

6.                 [dataArray replaceObjectAtIndex:i withObject:[dataArray objectAtIndex:j]];

                   NSLog(@"i=======[dataArray objectAtIndex:%d]=====%@",i,[dataArray objectAtIndex:i]);

7.                 i++;

8.             }

               while (i<j && [[dataArray objectAtIndex:i] intValue]<vot) i++;

               if (i<j) {

                   [dataArray replaceObjectAtIndex:j withObject:[dataArrayobjectAtIndex:i]];

9.                 NSLog(@"j======[dataArray objectAtIndex:%d]=====%@",j,[dataArray objectAtIndex:j]);

10.                 j--;

11.             }

12.         }

13.         [dataArray replaceObjectAtIndex:i withObject:[NSString stringWithFormat:@"%d",vot]];

14.         NSLog(@"low:(%d)....high:(%d)....vot:(%d)...%@",lowIndex,highIndex,vot,dataArray);

15.         [AppDelegate kuaisuMethodTest:dataArray low:lowIndex high:j-1];//前端子序列再排序

16.         [AppDelegate kuaisuMethodTest:dataArray low:i+1 high:highIndex];//后端子序列再排序

17.     }

18.     return dataArray;

19. }