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- Define a function compress : lists(T) → lists(T) that accepts a list argument (of some generic type T) and returns a list without any subsequent redundancies, e.g. compress(⟨a, a, b, b, b, c, c, a, b⟩) = ⟨a, b, c, a, b⟩ 1. Transform the definition into a computable function.2. Define f recursively.3. Unfold your definition for compress(⟨a, a, b, b, c, a⟩).4. (PROGRAMMING) Please map your definition into a Common LISP function. Place your code in file compress.lisp. The code should behave as follows: > (compress ’(a a a b c d d e))(A B C D E)> (compress ’())NIL> (compress ’(a b c c c a))(A B C A)> (compress ’(a a b b c c c c a b b))(A B C A B)) Implement a self-organizing list by creating a singly linked list of nodes andundertaking frequent retrievals of data in the list repeatedly and at random. Showhow the list restructures itself when (i) count, (ii) move to front and (iii) transposemethods are used for the same set of frequent retrievals.Implements clone which duplicates a list. Pay attention, because if there are sublists, they must be duplicated as well. Understand the implementation of the following function, which recursively displays the ids of each node in a list def show_ids(M, level=0): k = M.first_node while k is not None: print(" "*2*level, id(k)) if (str(k.value.__class__.__name__) == str(M.__class__.__name__)): show_ids(k.value, level+1) k = k.next W=L2(Node(10, Node(L2(Node(14, Node(15, Node(L2(Node(16, Node(17))))))), Node(20, Node(30)))) )show_ids(W) Develop your solution as follows: - First copy the nodes of the current list (self) - Create a new list with the copied nodes - Loop through the nodes of the new list checking the value field - If this field is also a list (use isinstance as in the show_ids function) then it calls clone on that list and substitutes the value. Complete the code: def L4(*args,**kwargs): class L4_class(L):…
- Given the linked list data structure, implement a sub-class TSortedList that makes sure that elements are inserted and maintained in an ascending order in the list. So, given the input sequence {1,7,3,11,5}, when printing the list after inserting the last element it should print like 1, 3, 5, 7, 11. Note that with inheritance, you have to only care about the insertion situation as deletion should still be handled by the parent class.Implement a method to remove a node in the middle of a singly linked list (i.e., any node except the first and last node, not necessarily the exact middle), given only access to that node.EXAMPLElnput:the node c from the linked list a->b->c->d->e->fResult: nothing is returned, but the new linked list looks like a ->b->d->e->fc)Define a class that implementsa singly linked list with the following methods, assuming that the first node of a linked list is referred to by head:i) A constructor.ii) searchNode that takes asparameter an integer value and returns a reference to the node with that value if it is found,and null otherwise. i)addlnOrder that allows insertion of a node to the linked list such that the list remainssorted in ascendingorder.iv) displayList which displays all the nodes in the linked list.d) Assuming that the class defined in part (c) aboveis used to implement a queueofpositive integers, define the following methods which can be used to implement queueoperations:i) isEmptythat returns true if the queue is empty andfalse otherwise.ii) pop that returns the value of the first node if the linked list is not empty,and -1 otherwise.iii) push that takes as parameteran integer value and adds it to the end of the queue.
- Can you make a driver program for the DoublyLinkedList given bellow, how the output of the driver should look like will be attached bellow. public class DoublyLinkedList<E> {private static class Node<E> {private E element; private Node<E> prev; private Node<E> next; public Node(E e, Node<E> p, Node<E> n) {element = e;prev = p;next = n;}public E getElement() { return element; }public Node<E> getPrev() { return prev; }public Node<E> getNext() { return next; }public void setPrev(Node<E> p) { prev = p; }public void setNext(Node<E> n) { next = n; }}private Node<E> header; private Node<E> trailer; private int size = 0; public DoublyLinkedList() {header = new Node<>(null, null, null); trailer = new Node<>(null, header, null); header.setNext(trailer); }public int size() { return size; }public boolean isEmpty() { return size == 0; }public E first() {if (isEmpty()) return null;return…Define an iterative function named reverse, with one linked list argument; it returns a reference to the first node in a linked (no new LN objects) with all the values in their reverse order. This method mutates the arguments list. Do not make any new LN objects. For example, for the list l1 = LN(1, LN(2, LN 3), reverse(l1) would return LN(3, LN(2, LN 1). def reverse(l: LN) -> LN:Write a function, to be included in a sorted linked list class, called printPosition, that will receive a T parameter and print its position within the list ( position 1 if in first node, position 2 if in second…). If the item is not in the list, specify it in a printing. Consider efficiency.
- Execute a program that will split a circularly linked list P with n nodes intotwo circularly linked lists P1, P2 with the first n/2 and the last n – n/2 nodes ofthe list P in them.Implementing a Double-Ended List:Includes the firstLastList.cpp programme, which shows how to implement a double-ended list. (By the way, don't mix up the double-ended list with the double linked list, which we'll look at later in Hour 10, "Specialised Lists.")Implement a method to remove a node from the centre of a singly linked list—that is, any node other than the first and end nodes—with access to only that node.EXAMPLEThe node C from the linked list a->b->c->d->e->f should be entered.Nothing is returned as a result, although the new linked list has the shape of an a->b->d->e->f