/* http://es.stackoverflow.com/q/42298/127 */
import java.util.*;
import java.io.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
{
final String regex
= "\\b(\\w+)(?> +\\1)+\\b"; final Pattern p = Pattern.compile(regex, Pattern.CASE_INSENSITIVE);
final String reemplazo
= "$1";
Scanner in
= new Scanner
(System.
in); Matcher m = p.matcher(input);
//Se reemplazan todas las ocurrencias
input = m.replaceAll(reemplazo);
}
}
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