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import java.util.LinkedList;
class LinkedListDemo {
public static void main(String args[]) {
LinkedList<String> ll = new LinkedList<String>();
ll.add("F");
ll.add("B");
ll.add("D");
ll.add("E");
ll.add("C");
ll.addLast("Z");
ll.addFirst("A");
ll.add(1, "A2");
System.out.println("Original contents of ll: " + ll);
ll.remove("F");
ll.remove(2);
System.out.println("Contents of ll after deletion: " + ll);
ll.removeFirst();
ll.removeLast();
System.out.println("ll after deleting first and last: " + ll);
String val = ll.get(2);
ll.set(2, val + " Changed");
System.out.println("ll after change: " + ll);
}
}
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