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  1. Prepare
  2. Algorithms
  3. Strings
  4. Alternating Characters
  5. Discussions

Alternating Characters

  • TuanBao
     + 0 comments

    This is my Java 8 (15) solution using REGEX, feel free to ask me any questions.

    public static int alternatingCharacters(String s) {
    Matcher m = Pattern.compile("([AB])\\1+").matcher(s);
    return s.length() - m.replaceAll("$1").length();
}