TableView如何刷新指定的cell 或section和滚动到制定位置

//一个section刷新

NSIndexSet *indexSet=[[NSIndexSet alloc]initWithIndex:2];

[tableview reloadSections:indexSet withRowAnimation:UITableViewRowAnimationAutomatic];

//一个cell刷新

NSIndexPath *indexPath=[NSIndexPath indexPathForRow:3 inSection:0];

[tableView reloadRowsAtIndexPaths:[NSArray arrayWithObjects:indexPath,nil] withRowAnimation:UITableViewRowAnimationNone];

//
滚动到制定位置
[self.matchListTableView reloadData];
NSIndexPath * dayOne = [NSIndexPath indexPathForRow:0 inSection:2];
[self.matchListTableView scrollToRowAtIndexPath:dayOne atScrollPosition:UITableViewScrollPositionTop animated:YES];