Mapping source: https://www.nationsonline.org/oneworld/country_code_list.htm Country flag source: https://flagpedia.net/download/icons
Personal sideproject for practice Author: JPcooper4589262@gmail.com
countryCodeMapper.getCountryNameList() // return an array of country names
countryCodeMapper.getCountryCodeList() // return an array of country codes
countryCodeMapper.getCountryName("GB") // input country code and return the mapping country name
countryCodeMapper.getCountryCode("Japan") // input country name and return the mapping country code
countryCodeMapper.getCountryFlag("GB") // input country code adn return the country flag icon