ios计算字符串的汉字个数以及字母和数字的字数

 
int count = 0;
    int count1 =0;
    NSString*str = @"汉ab字c我dsfaksfdsfnwlksjdlf我时";
    for (int i =0; i
    {
       unichar c = [str characterAtIndex:i];
       if (c >=0x4E00 && c <=0x9FA5)
       {
           count ++;
           
       }
       else
       {
           count1 ++;
           
       }
    }
    
   NSLog(@"汉字%d字母%d",count,count1);