We use cookies to ensure you have the best browsing experience on our website. Please read our cookie policy for more information about how we use cookies.
  1. Prepare
  2. Java
  3. Strings
  4. Java Regex 2 - Duplicate Words
  5. Discussions

Java Regex 2 - Duplicate Words

  • pmvyavhare
     + 0 comments

    import java.util.Scanner; import java.util.regex.Matcher; import java.util.regex.Pattern;

    public class DuplicateWords {

    public static void main(String[] args) {

    String regex = "\\b(\\w+)(\\b\\W+\\b\\1\\b)*";
    Pattern p = Pattern.compile(regex, Pattern.CASE_INSENSITIVE);

    Scanner in = new Scanner(System.in);
    int numSentences = Integer.parseInt(in.nextLine());

    while (numSentences-- > 0) {
        String input = in.nextLine();

        Matcher m = p.matcher(input);

        // Check for subsequences of input that match the compiled pattern
        while (m.find()) {
            input = input.replaceAll(m.group(0),m.group(1));
        }

        // Prints the modified sentence.
        System.out.println(input);
    }

    in.close();
}

    }