create a double linked list
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Let us talk about double linked lists. Let us say that each node for this one would have public members which is prev elem and next..
a. create a double linked list with 3 node that has 6 2 1. create trailer and header references for this one...
b. create a code that would insert an elevent t before the value v
c. explain what wouldbe the process in deleting the 1st node
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- We need a linked list to hold information about penguins in a zoo. You will need the following integers for your IntNode (see below). I have included sample values for one of the penguins: penguin ID: 45821 penguin weight (kg): 11 penguin height (cm): 90 We now need to track the number of penguins in the zoo. I would like to propose a better way to track the size of the list. Rather than traversing the list every time you need to know its size, why not keep a variable called listSize that increments every time you add a node to the list and decrements anytime you remove an item from the list? public class penguinList { //nested class IntNode goes here private IntNode first; private int listSize; //...the methods of penguinList class go here } Now, you just need to increment the listSize instance variable in every method that adds a node to the list. If you have any methods that removes a node from the list, decrement the listSize instance variable in those methods instead.…We need a linked list to hold information about penguins in a zoo. You will need the following integers for your IntNode (see below). I have included sample values for one of the penguins: penguin ID: 45821 penguin weight (kg): 11 penguin height (cm): 90 We now need to track the number of penguins in the zoo. I would like to propose a better way to track the size of the list. Rather than traversing the list every time you need to know its size, why not keep a variable called listSize that increments every time you add a node to the list and decrements anytime you remove an item from the list? public class penguinList { //nested class IntNode goes here private IntNode first; private int listSize; //...the methods of penguinList class go here } Now, you just need to increment the listSize instance variable in every method that adds a node to the list. If you have any methods that removes a node from the list, decrement the listSize instance variable in those methods instead.…Assume that the nodes of the singly linked lists are arranged in decreasing order of the exponents of the variable x in order to add the two polynomials.The objective is to create a fresh list of nodes that represents the addition of P1 and P2. This is done by adding the COEFF fields of nodes in lists P1 and P2 that have identical powers of variable x, and then making a new node in the resulting list P1 + P2. The key part of the technique is shown below.The start pointers of the singly linked lists that correspond to the polynomials P1 and P2 are P1 and P2, respectively. Two temporary pointers, PTR1 and PTR2, are created with starting values of P1 and P2, respectively. Make procedural code.
- Without using the java collections interface (i.e. do not import java.util.List, LinkedList, etc. ) Write a java program that inserts a new String element (String newItem) into a linked list before another specified item (String itemToInsertBefore). For example if items "A", "B", "C" and "D" are in a linked list in that order and the below method is called, insertBefore("E", "C"), then "E" would be inserted before "C", making the final list to be "A", "B", "E", "C" and "D" with no nulls or blank elements or any elements missing or anything. It should work for all lenghths of linkedlists of Strings. public Boolean insertBefore(String newItem, String itemToInsertBefore) { // returns true if done successfully, else returns false if itemToInsertBefore cannot be found or some other error }What is the benefit of having a link-based implementation of the List that also tracks a reference to the last Node in the chain? Select one: a. It requires more pointes to be adjusted when performing the basic List operations b. It makes adding a new entry to a specified position an O(1) operation c. It makes the remove operation an O(1) operation d. It makes adding a new entry to the back of the List an O(1) operationA singly linked list contains n - 1 strings that are binary representations of numbers from the set {0, 1,.…, n – 1} where n is an exact power of 2. However, the string corresponding to one of the numbers is missing. For example, if n = 4, the list will contain any three strings from 00, 01,10 and 11. Note that the strings in the list may not appear in any specific order. Also note that the length of each string is lgn, hence the time to compare two strings in O(lgn). Write an algorithm that generates the missing string in O(n).
- Given the source code of linked List, answer the below questions(image): A. Fill out the method printList that print all the values of the linkedList: Draw the linked list. public void printList() { } // End of print method B. Write the lines to insert 10 at the end of the linked list. You must draw the final linked List. Notice that you can’t use second or third nodes. Feel free to define a new node. Assume you have only a head node C. Write the lines to delete node 2. You must draw the final linked list. Notice that you can’t use second or third node. Feel free to define a new node. Assume you have only a head nodeConsider a linked list (SLL or DLL your choice) in which, to delete anelement from the list, we simply mark that node for the deletion.Whenever the number of deleted nodes in the list exceeds the number ofnon-deleted nodes, we simply delete all nodes which were marked fordeletion. Implement the following operations for such a linked list.1. addFirst2. addLast3. delFirst4. delLast5. Delete (mark for deletion) an ith node in the list.6. display all non-deleted nodes in the list7. Size : number of non-deleted nodes in the list.8. Recall the last deleted node in the list.Implement the doubly link list with all the functions as one code.Your doubly link list performed the following operations Insertion − Adds an element at the beginning of the list. Deletion − Deletes an element at the beginning of the list. Insert Last − Adds an element at the end of the list. Delete Last − Deletes an element from the end of the list. Insert After − Adds an element after an item of the list. Delete − Deletes an element from the list using the key. Display forward − Displays the complete list in a forward manner. Display backward − Displays the complete list in a backward manner
- Use Java : Delete N Nodes After M Nodes of a Linked List You are given the head of a linked list and two integers m and n.Traverse the linked list and remove some nodes in the following way:- Start with the head as the current node.- Keep the first m nodes starting with the current node.- Remove the next n nodes- Keep repeating steps 2 and 3 until you reach the end of the list.Return the head of the modified list after removing the mentioned nodesWrite a Python code using the given function and conditions. Do not use Numpy. Use LinkedList Manipulation. Given function: def insert(self, newElement, index) Pre-condition: The list is not empty. Post-condition: This method inserts newElement at the given index of the list. If an element with the same key as newElement value already exists in the list, then it concludes the key already exists and does not insert the key. [You must also check the validity of the index].True or False For each statement below, indicate whether you think it is True or False. If you like, you can provide a description of your answer for partial credit in case you are incorrect. Use the standard linked list below to answer True/False statements 9-12: 8 7 null 4 10 The “head” pointer of this list is pointing to Node 4 If we called “insert(5)”, the new node’s “next” pointer will point to Node 8 If we called “delete(10)”, Node 7’s “next” pointer will point to Node 8 If we called “search(20)”, the “head” pointer will be at Node 4 after the search function ends