OC數組冒泡排序

NSMutableArray *sortArray = [NSMutableArray arrayWithObject:

                                                NSNumber numberWithInt:12,

                                                NSNumber numberWithInt:23,

                                                NSNumber numberWithInt:122,

                                                NSNumber numberWithInt:1,

                                                NSNumber numberWithInt:46,

                                                NSNumber numberWithInt:41, nil];

for(int i = 0; i < sortArray.count - 1; i++){

            for(int j = 0; j < sortArray.count - i - 1;j++){

                     if([sortArray[j] intValue] > [sortArray[j + 1] intValue){

                     [sortArray exchangeObjectAtIndex:j withObjectAtIndex:j + 1];

                 }

        }

}