把一串阿拉伯数字转为汉字的数字

-   (NSString *)translation:(NSString *)arebic
  {
   NSString *str = arebic;
  NSArray *arabic_numerals = 
 @[@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"0"];
  NSArray *chinese_numerals = 
 @[@"一",@"二",@"三",@"四",@"五",@"六",@"七",@"八",@"九",@"零"];
        NSArray *digits = 
@[@"个",@"十",@"百",@"千",@"万",@"十",@"百",@"千",@"亿",@"十",@"百",@"千",@"兆"];
    NSDictionary *dictionary = [NSDictionary dictionaryWithObjects:chinese_numerals forKeys:arabic_numerals];

   NSMutableArray *sums = [NSMutableArray array];
  for (int i = 0; i < str.length; i ++) {
     NSString *substr = [str substringWithRange:NSMakeRange(i, 1)];
     NSString *a = [dictionary objectForKey:substr];
     NSString *b = digits[str.length -i-1];
     NSString *sum = [a stringByAppendingString:b];
     if ([a isEqualToString:chinese_numerals[9]])
    {
          if([b isEqualToString:digits[4]] || [b isEqualToString:digits[8]])
         {
             sum = b;
             if ([[sums lastObject] isEqualToString:chinese_numerals[9]])
              {
                 [sums removeLastObject];
              }
          }else
           {
             sum = chinese_numerals[9];
          }
        
           if ([[sums lastObject] isEqualToString:sum])
         {
             continue;
          }
     }
     //128281
     [sums addObject:sum];
  }

   NSString *sumStr = [sums componentsJoinedByString:@""];
  NSString *chinese = [sumStr substringToIndex:sumStr.length-1];
 NSLog(@"%@",str);
 NSLog(@"%@",chinese);
  return chinese;
     }