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//Number 11 ¹ýÂË×Ö·û´®ÖеķÇÊý×Ö×Ö·û
import java.util.regex.*;
import java.util.Scanner;
public class GuoLv{
public static void main(String args[]){
Scanner reader = new Scanner(System.in);
String s = reader.nextLine();
Pattern p;
Matcher m;
p = Pattern.compile("[0-9]");//ģʽƥÅä
m = p.matcher(s);
System.out.println("¹ýÂ˺óµÄ×Ö·û´®Îª£º");
while (m.find()){
String str = m.group();
System.out.print(str);
}
}
}
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