sectionIndexTitlesForTableView

gistfile1.m

- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
  NSMutableArray *toBeReturned = [[NSMutableArray alloc]init];
  for(char c = 'A';c<='Z';c++)
    [toBeReturned addObject:[NSString stringWithFormat:@"%c",c]];
  return toBeReturned;
}

- (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index {
  NSInteger count = 0;

  NSMutableArray *arrayOfCharacters = [[NSMutableArray alloc]init];
  for(char c = 'A';c<='Z';c++)
    [arrayOfCharacters addObject:[NSString stringWithFormat:@"%c",c]];

  for(NSString *character in arrayOfCharacters) {
    if(title.length > 0 && [character isEqualToString:[title substringToIndex:1]])
      return count;
    count ++;
  }
  return 0;// in case of some eror donot crash d application
  
}