import java.util.Scanner;
public class CountryCodeLookup {
// -------------------------------------------------------------
// normalizeCountryName
// Converts "france", "FRANCE", "fRaNcE" → "France"
// Converts "united states" → "United States"
// This matches the format used in the map keys.
// -------------------------------------------------------------
public static String normalizeCountryName(String s) {
// Convert entire string to lowercase first
s = s.toLowerCase();
// Capitalize the first letter of each word
StringBuilder result = new StringBuilder(s.length());
boolean capitalizeNext = true;
for (char c : s.toCharArray()) {
if (capitalizeNext && Character.isLetter(c)) {
result.append(Character.toUpperCase(c));
capitalizeNext = false;
} else {
result.append(c);
}
if (c == ' ') {
capitalizeNext = true;
}
}
return result.toString();
}
// -------------------------------------------------------------
// getCountryCode
// Works with lowercase, uppercase, mixed-case input.
// Map stays exactly as you defined it.
// -------------------------------------------------------------
public static String getCountryCode(String countryName) {
// Lookup table stored exactly as given
String[][] countryCodes = {
{"United States", "US"},
{"Canada", "CA"},
{"United Kingdom", "GB"},
{"France", "FR"},
{"Germany", "DE"},
{"Romania", "RO"},
{"Japan", "JP"},
{"Australia", "AU"},
{"Hungary", "HU"}
};
// Normalize input to match map keys
String key = normalizeCountryName(countryName);
// Search the array
for (String[] entry : countryCodes) {
if (entry[0].equals(key)) {
return entry[1];
}
}
return "Unknown";
}
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter a country name: ");
String name = scanner.nextLine();
String code = getCountryCode(name);
System.out.println("Country code: " + code);
scanner.close();
}
}
/*
run:
Enter a country name: japan
Country code: JP
*/
