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  4. Java Regex 2 - Duplicate Words
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Java Regex 2 - Duplicate Words

  • jagbcc
     + 1 comment

    With this code I got the same expected results except for a mysterious character at the end of the last test case. It is neither a whitespace or unprintable char. It makes no sense for me.

    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+)\\s+\\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("(?i)"+regex,"$1");
                //m = p.matcher(input);
            }
            
            // Prints the modified sentence.
            System.out.print(input+'\n');
        }
			
        in.close();
    }
}