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- Course: Data Structure and Algorithms Language: C++ Question is well explained Question #2Implement a class for Circular Doubly Linked List (with a dummy header node) which stores integers in unsorted order. Your class definitions should look like as shown below: class CDLinkedList;class DNode {friend class CDLinkedList;private int data;private DNode next;private DNode prev;};class CDLinkedList {private:DNode head; // Dummy header nodepublic CDLinkedList(); // Default constructorpublic bool insert (int val); public bool removeSecondLastValue (); public void findMiddleValue(); public void display(); };/** * This class will use Nodes to form a linked list. It implements the LIFO * (Last In First Out) methodology to reverse the input string. * **/ public class LLStack { private Node head; // Constructor with no parameters for outer class public LLStack( ) { // to do } // This is an inner class specifically utilized for LLStack class, // thus no setter or getters are needed private class Node { private Object data; private Node next; // Constructor with no parameters for inner class public Node(){ // to do // to do } // Parametrized constructor for inner class public Node (Object newData, Node nextLink) { // to do: Data part of Node is an Object // to do: Link to next node is a type Node } } // Adds a node as the first node element at the start of the list with the specified…7. ASK class DoublyLinkedList<E> {// define ListNode elements specific for this type of list, indicating current, previous and next// consider head as name for previous node, and tail for the next one.private ListNode<E> head;private ListNode<E> current;private ListNode<E> tail; // default constructorpublic DoublyLinkedList(){//*** Task #1: implement a default constructor here, initializing the nodes to null } // method that calculates the length of the listpublic int length(){//*** Task #2: implement the method navigating through the list until you run out of elements } // method that adds a node at the beginning of the listpublic void addANodeToStart(E addData){//*** Task #3: implement this method, taking into consideration that the head will be replaced by a new node. You may want to use a temporary variable } // accessor method that gets data at current nodepublic E getDataAtCurrent(){//*** Task #4: implement this method making sure to take into account…
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- Class Name: Exercise24_03 JAVA The MyLinkedList class used in LiveExample 24.5 is a one-way directional linked list that enables one-way traversal of the list. Modify the Node class to add the new data field name previous to refer to the previous node in the list, as follows: public class Node {E element;Node next;Node previous;public Node(E e) {element = e;}} Implement a new class named TwoWayLinkedList that uses a doubly linked list to store elements. Define TwoWayLinkedList to implements MyList. You need to implement all the methods defined in MyLinkedList as well as the methods listIterator() and listIterator(int index). Both return an instance of java.util.ListIterator (see Figure 20.4). The former sets the cursor to the head of the list and the latter to the element at the specified index. Test your new class using this code from https://liveexample.pearsoncmg.com/test/Exercise24_03.txt. Sample output: Enter 5 integers: 1.23.45.67.89.11.2 3.4 10.55 7.8 9.1 9.1 7.8 10.55 3.4template <class T> class List; template <class T> class Node{ friend class List<T>; private: T data; Node* link; }; template <class T> class List{ public: List(){first = 0;} void InsertBack(const T& e); void Concatenate(List<T>& b); void Reverse(); class Iterator{ …. }; Iterator Begin(); Iterator End(); private: Node* first; }; I need algorithm , I think it may use iterator to complile. The question shows on below photo.complete all the implementation of the member functions listed in the class interface for the following header file. #ifndef _LINKEDSTACK#define _LINKEDSTACK #includeusing namespace std;templateclass LinkedStack{private:Node *top; Node *getCurrentTop() { return top; }public: Stack(); bool isEmpty(); bool push(ItemType newItem); bool pop(); ItemType peek(); void clean(); bool display();};#endif
- Assume you have a class SLNode representing a node in a singly-linked list and a variable called list referencing the first element on a list of integers, as shown below: public class SLNode { private E data; private SLNode next; public SLNode( E e){ data = e; next = null; } public SLNode getNext() { return next; } public void setNext( SLNoden){ next = n; } } SLNode list; Write a fragment of Java code that would append a new node with data value 21 at the end of the list. Assume that you don't know if the list has any elements in it or not (i.e., it may be empty). Do not write a complete method, but just show a necessary fragment of code.Define the 3 bolded functions for the following DynIntStack (linked list): class DynIntStack {private: struct Node { int value; // Value in the node Node *next; // Pointer to the next node }; Node *top; // Pointer to the stack toppublic: DynIntStack() { head = nullptr; } void push(int); //assume this is already defined void removeTop(); // removes the top element without returning it int topValue(); // returns the top element without removing it bool isEmpty() { return head == nullptr; } bool isFull() { return false; } void pushMany(int values[], int n); //add n values from the array}; Hints: void removeTop() (hint 3 lines of code) int topValue() (hint 1 line of code) void pushMany(int values[], int n) (hint 2 lines of code, use a for loop, call another function)X1222: Double Ended Queue: Deque A double ended queue, known as deque, is a queue data structure that allows adding and removing elements from both ends of the queue. Instead of enqueue and dequeue, it has insert, delete, and get for both front and last of the queue as shown below. The data stored internally is stored in a ListNodesPlus object. The basic class definition is shown below: public class Deque { private ListNodePlus elements; // code ommitted for space public void clear() {...}; public int numElements () {...}; public boolean isEmpty() {...}; ● // Implement the following four methods public void insertFront (E it) { } public E deleteFront () { } public void insertLast (E it) { } public E deleteLast() { } Write the following four methods: • insertFront (E it) takes it and adds it to the front of the queue. stored internally in elements. The front of the queue is defined as position 0 in the queue. ● deleteFront () removes the element at the front of the queue and returns it.…