(8 kyu) altERnaTIng cAsE = ALTerNAtiNG CaSe.java

// #1
public class StringUtils {
  public static String toAlternativeString(String string) {
    String result = "";
    for (int i =0; i < string.length(); i++) {
      String c = Character.toString(string.charAt(i));
      if (c.toUpperCase() == c) {
        result += c.toLowerCase();
      } else {
        result += c.toUpperCase();
      }
    }
    return result;
  }
}

// #2
public class StringUtils {
    public static String toAlternativeString(String string) {
        String result = "";
        for (char c : string.toCharArray()) {
            if(Character.isUpperCase(c)) {
                result += Character.toLowerCase(c);
            } else {
                result += Character.toUpperCase(c);
            }
        }
        return result;
    }
}