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import java.util.Comparator;
import java.util.TreeSet;
// A reverse comparator for strings.
class MyComp implements Comparator<String> {
public int compare(String a, String b) {
return b.compareTo(a);
}
}
class CompDemo {
public static void main(String args[]) {
TreeSet<String> ts = new TreeSet<String>(new MyComp());
ts.add("C");
ts.add("A");
ts.add("B");
ts.add("E");
ts.add("F");
ts.add("D");
for (String element : ts)
System.out.print(element + " ");
}
}
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