Get a list of all country codes sorted by their localised names

SortedCountryCodes.m

+ (NSArray *)getSortedCountryCodes {
    NSLocale *locale = [NSLocale currentLocale];
    NSArray *countryArray = [NSLocale ISOCountryCodes];
    
    NSMutableDictionary *countriesDictionary = [[NSMutableDictionary alloc] initWithCapacity:countryArray.count];
    for (NSString *countryCode in countryArray) {
        NSString *localizedCountryName = [locale displayNameForKey:NSLocaleCountryCode value:countryCode];
        countriesDictionary[countryCode] = localizedCountryName;
    }
    
    NSArray *sortedCodes = [countriesDictionary keysSortedByValueUsingComparator:^(id obj1, id obj2) {
         NSString *country1 = obj1;
         NSString *country2 = obj2;
         return [country1 localizedCompare:country2];
     }];
     
     return sortedCodes;
}