//  数组排序        NSArray *listGroupname = [self.listTeams sortedArrayUsingComparator:^(NSString *n1,NSString *n2) {                NSString *val1 = [[NSString alloc]init];                NSString *val2 = [[NSString alloc]init];                if (val1 > val2) {                        return  NSOrderedAscending;                    } else {                        return NSOrderedDescending;                    }        }];    // 字典排序/** dic按key排序而不是按插入时间，所以需要重新排序，得到排好序的key */    NSArray *sortedKeys = [callDataDic keysSortedByValueUsingComparator:^NSComparisonResult(id obj1, id obj2) {        if ([obj1 longLongValue] > [obj2  longLongValue]) {            return (NSComparisonResult)NSOrderedAscending;        }        if ([obj1 longLongValue] < [obj2 longLongValue]) {            return (NSComparisonResult)NSOrderedDescending;        }        return (NSComparisonResult)NSOrderedSame;    }];