Create a nested class called DoubleNode that allows you to create doubly-linked lists with each node containing a reference to the item before it and the item after it (or null if neither of those items exist). Then implement static methods for the following operations: insert before a given node, insert after a given node, remove a given node, remove from a given node, insert at the beginning, insert at the end, remove from a given node, and remove a given node.
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Create a nested class called DoubleNode that allows you to create doubly-linked lists with each node containing a reference to the item before it and the item after it (or null if neither of those items exist). Then implement static methods for the following operations: insert before a given node, insert after a given node, remove a given node, remove from a given node, insert at the beginning, insert at the end, remove from a given node, and remove a given node.
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- Write a program that creates a linked list to represent details of students. • SID (for Student ID) • Name • Address • Age • Gender Your program must also display a menu to perform the following tasks: • Create a linked list. The method to create a linked list makes use of the method insertFirst() or insertLast() or insertOrdered() • Insert new nodes to the linked list. • Search for details pertaining to a particular student. • Delete details of a particular student. • Find number of nodes in the linked list. • Display information pertaining to all students. The menu options should be as follows: 1. Create linked list 2. Add new student 3. Search for a student 4. Delete a student 5. Find number of students 6. Print student details 7. ExitComputer Science create a method +addToList(o:E):void that adds the object (o) to the ArrayList referenced by the instance variable list. create a method +removeFromBackOfList():E that removes the object at the back of the ArrayList and returns it.Write a Java class myLinkedList to simulate a singly linked list using arrays as the underlying structure. Include the following methods: 1. insert an element within the linked list.(this should also work for the front and the rear of the list) 2. Remove an element from the linked list 3. Display (print) the elements of the linked list in order. 4. A method to check if the list is "empty". Test your solution using a linked list that initially has the characters A, B, D, E, F, and G. Insert "C" between B and D. Remove element "F". [Hint: One solution (recommended) is to use 2 arrays. One for the data, and the other for the "next" pointer. Also, consider using dummy nodes for the front, and possibly the rear of the list] Extend the solution so that it simulates a doubly linked list! (hint: You will need a third array to represent the "backward" pointers)
- Write a program that creates a linked list to represent details of students. The following details must be kept for each student: SID (for Student ID) Name Address Age Gender Your program must also display a menu to perform the following tasks: Create a linked list. Note: The method to create a linked list makes use of the method insertFirst() or insertLast() or insertOrdered() Insert new nodes to the linked list. Search for details pertaining to a particular student. Delete details of a particular student. Find number of nodes in the linked list. Display information pertaining to all students. The menu options should be as follows: Create linked list Add new student Search for a student Delete a student Find number of students Print student details Exit YOU SHOULD CREATE YOUR OWN NODE CLASS, AND YOU MUST NOT USE JAVA LINKED LIST LIBRARY.Exercise 1 If your first name starts with a letter from A-J inclusively: Add a method swapTwoNodes to SinglyLinkedList class from week 2 lecture examples. This method should swap two nodes node1 and node2 (and not just their contents) given references only to node1 and node2. The new method should check if node1 and node2 are the same node, etc. Write the main method to test the swapTwoNodes method. Hint: You may need to traverse the list. If your first name starts with a letter from K-Z inclusively: Add a method swapTwoNodes to DoublyLinkedList class from week 2 lecture examples. This method should swap two nodes node1 and node2 (and not just their contents) given references only to node1 and node2. The new method should check if node1 and node2 are the same node, etc. Write the main method to test the swapTwoNodes method. Hint: You may need to traverse the list.…2. Linked ListsCreate a class called OurLinkedList and implement the following methods:1- Write a method called add() that takes a linked list of integers along an integerand adds that integer to the list.2- Write a method called print() that takes a linked list of integers and prints all itselements.3- Write a method called deleteAll() that takes a linked list of integers along an integer which deletes all the occurrences of this number in the linked list. So if the item is 7 and the list is [1,3,7,4,3,7,2], the result is [1,3,4,3,2].4- Write a method called indexesOf() that takes a linked list of integers along withan integer and returns a list of the positions of all the occurrences of that integer.So if the integer is 5 and the list is [2,4,5,8,1,5,3], the result is [2,5].
- 2) Suppose you have a linked list class that provides the following methods: // constructor. // returns size of the list. LinkList () int size (); void insertHead (Object data) // insert new data at the head of // the list. // remove and return the Object at // the head of the list. Object removeHead () void insertTail (Object data) // insert new data at the tail of // the list. The class below is an implementation of a stack using the linked list class. Fill in the method implementations: class Stack { private Stack s; public Stack () { public void push (Object x) { } public Object pop () // assume stack is not empty { } public boolean isEmpty() { }Create a DeleteDuplicatesclass which consists of a deleteDuplicates method which takes the nums list as its parameter. Implement the deleteDuplicates method: Check if the input list is null or empty, and return an empty list if so. Initialize a pointer i to keep track of the unique elements. Use a for loop to Iterate through the list using another pointer j which starts at j=1 and goes until j=nums.size(); If the current element at j is not equal to the previous element at i using !nums.get(i).equals(nums.get(j), increment i and set the current element at j to the new position at i using nums.set(i, nums.get(j)). After the for loop ends, return the sublist from the beginning to i + 1, as this will contain all unique elements. Call the deleteDuplicates method with the sample list as argument: Call the deleteDuplicates method and pass the nums list as argument Store the result in a variable result Print the result to the console. Input: [1, 1, 2, 3, 3,…1- A new static method with one parameter which is a head node for a linked list of integers, the method should create a new linked list which is equivalent to the original list of integers but with all repetitions removed, the method's return value is a head reference for the new list. this is what I have but it's not removing repetitions. public static IntLinkedBag removeRepetition (IntLinkedBag b1) { IntNode next; IntNode head = null; LinkedList<Integer> s = new LinkedList<>(); IntNode new_list = new IntNode(0, null); IntNode now = head; IntNode prev = new_list; while (now!= null) { int x = now.data; if (s.contains(x)) { new_list = new_list.next; } else { s.add(x); new_list.next = new IntNode(x, now); new_list = new_list.next; } now = now.next; } return b1; } }…
- A readinglist is a doubly linked list in which each element of the list is a book. So, you must make sure that Books are linked with the previous prev and next element. A readinglist is unsorted by default or sorted (according to title) in different context. Please pay attention to the task description below. Refer to the relevance classes for more detail information. Implement the add_book_sorted method of the ReadingList class. Assume the readinglist is sorted by title, the add_book_sorted method takes an argument new_book (a book object), it adds the new_book to the readinglist such that the readinglist remain sorted by title. For example, if the readinglist contain the following 3 books: Title: Artificial Intelligence Applications Author: Cassie Ng Published Year: 2000 Title: Python 3 Author: Jack Chan Published Year: 2016 Title: Zoo Author: Cassie Chun Published Year: 2000 If we add another book (titled "Chinese History"; author "Qin Yuan"; and published year 1989) to the…Complete the method void addFirst(T item). It adds an item of type T to the front of the deque. It must not use any loops or recursion. Each operation must take constant time, that is, it does not depend on the deque's size. Additionally, if the item is null, instead of adding it into the deque, reject and throw an illegal argument exception. Here's the skeleton code // EXERCISE 6.2 ADD NOT NULL TO FRONT /** * Adds an non-null item of type T to the front of the deque. * @param item is a type T object. @throws IllegalArgumentException if the item is null. */ public void addFirst(T item) { }PYTHON LAB: Inserting an integer in descending order (doubly-linked list) Given main.py and an IntNode class, complete the IntList class (a linked list of IntNodes) by writing the insert_in_descending_order() method to insert new IntNodes into the IntList in descending order. Ex. If the input is: 3 4 2 5 1 6 7 9 8 the output is: 9 8 7 6 5 4 3 2 1 _____________________________________________________________________________________ Main.py: from IntNode import IntNode from IntList import IntList if __name__ == "__main__": int_list = IntList() input_line = input() input_strings = input_line.split(' ') for num_string in input_strings: # Convert from string to integer num = int(num_string) # Insert into linked list in descending order new_node = IntNode(num) int_list.insert_in_descending_order(new_node) int_list.print_int_list() IntNode.py class IntNode: def __init__(self, initial_data, next = None,…