import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
public class Main {
public static void main(String args[]) {
List ll = new LinkedList();
for (char n = 'A'; n <= 'Z'; n++)
ll.add(n);
Collections.shuffle(ll);
for (Character x : ll)
System.out.print(x + " ");
Collections.sort(ll);
for (Character x : ll)
System.out.print(x + " ");
System.out.println("Searching for F.");
int i = Collections.binarySearch(ll, 'F');
if (i >= 0) {
System.out.println("Found at index " + i);
System.out.println("Object is " + ll.get(i));
}
}
}