Circular Double Linked List - All Operations
// The Double linked list node / circular double linked list node class Node{ int data; Node next; Node prev; Node(int x){ this.data=x; this.prev=null; this.next=null; } } public class Main { // head and tail references of circular double linked list Node head; Node tail; // function to add a node to the last of circular double linked list // Time Complexity - O(1) , Space Complexity - O(1) public void addNode(int x){ // create a new node Node newNode = new Node(x); // if linked list is empty if(head==null){ head=newNode; ...