public class Test {
public static void main(String[] args) {
String s1 = "aaa";
String s2 = "cccx";
s1 = s1 + s2;
s2 = s1.substring(0, s1.length()-s2.length());
s1 = s1.substring(s2.length());
System.out.println(s1+" - "+s2);
}
}
