adding checkmark accessary to multiple sections(checking one cell at a time in each section)

Multiplecheckmultiplesection

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
    [tableView cellForRowAtIndexPath:[NSIndexPath indexPathForItem:indexPath.row inSection:indexPath.section]].accessoryType = UITableViewCellAccessoryCheckmark;
    [self deSelectOtherCellsInTableView:tableView Except:indexPath];
   
}

-(void)deSelectOtherCellsInTableView:(UITableView *)tableView Except:(NSIndexPath *)indexPath{
    for(UITableViewCell *cell in [tableView visibleCells]){
        NSIndexPath *index = [tableView indexPathForCell:cell];
        if(index.section == indexPath.section && index.row != indexPath.row){
            cell.accessoryType = UITableViewCellAccessoryNone;
        }
    }
}