Write a method called prioritizeQueue to give priority for vaccination for elderly persons. The method is to be in a class called VaccinationQueue and has two parameters q1 and q2 type ArrayQueue. The q1 and q2 data are of type Integer. Assume that initially q1 is not empty and q2 is empty. The method will insert from q1 those elements towards the beginning of the queue (front) q2 whose data is greater than or equal to 45 and will insert those elements whose data is less than 45 and greater than or equal to 18 towards the end (rear) of q2. Any data item less than 18 of q1 will not be inserted in q2. It returns the number of elements added to q2. Class ArrayQueue and all its methods including iterator are available for use. You can also create temporary queues. You are not allowed to use arrays or any other data structure.
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- Write a method called changeQueue to be considered inside the ArrayQueue class and has one parameter item of type E. Your method will change the queue in such a way that if the the first element of the queue and the last element of the queue are equal, the first and last elements in the queue will be replaced with item, otherwise, do not do any change. Similarly, the same process is done for the second element in the queue and the element before the last in the queue and so on. Assume you have a non-empty queue with even number of elements. You are not allowed to call any method from the the ArrayQueue class. Do not use iterators. Method head: public void changeQueue(E item) Example1: Before run: front rear “this” queue: 10 29 2 2 5 10 Item1: 100 After run: front rear “this” queue: 100 29 100 100 5 100The implementation of a queue in an array, as given in this chapter, uses the variable count to determine whether the queue is empty or full. You can also use the variable count to return the number of elements in the queue. On the other hand, class linkedQueueType does not use such a variable to keep track of the number of elements in the queue. Redefine the class linkedQueueType by adding the variable count to keep track of the number of elements in the queue. Modify the definitions of the functions addQueue and deleteQueue as necessary. Add the function queueCount to return the number of elements in the queue. Also, write a program to test various operations of the class you defined.Given the MileageTrackerNode class, complete main() in the MileageTrackerLinkedList class to insert nodes into a linked list (using the insertAfter() method). The first user-input value is the number of nodes in the linked list. Use the printNodeData() method to print the entire linked list. DO NOT print the dummy head node. Ex. If the input is: 3 2.2 7/2/18 3.2 7/7/18 4.5 7/16/18 the output is: 2.2, 7/2/18 3.2, 7/7/18 4.5, 7/16/18 public class MileageTrackerNode { private double miles; // Node data private String date; // Node data private MileageTrackerNode nextNodeRef; // Reference to the next node public MileageTrackerNode() { miles = 0.0; date = ""; nextNodeRef = null; } // Constructor public MileageTrackerNode(double milesInit, String dateInit) { this.miles =…
- Given the following definition of a single linked list, write a method that calculates and returns the sum of even integers in a linked list. public class SLL<E> { private static class Node<E>{ private E data; private Node<E> next; private Node(E dataItem) { data = dataItem; next = null; } private Node(E dataItem, Node<E> nodeRef) { data = dataItem; next = nodeRef; } } private Node<E> head = null; private int size = 0; }Python For this assignment, you will write a program to allow the user to store the names and phone numbers of their contacts. Create the following classes: Contact: two attributes. One for the contact's name and the contact's phone number. Node: two attributes: _data and _next. For use in a linked list. ContactList: One attribute: _head, a reference to the head of an internal linked list of Node objects. Note: self._head is an attribute of the class, so any method which updates the internal linked list can simply update the list self._head references. There is no need to return anything like we did in methods such as add_to_end in the lecture. Note also that for the same reason, we do not have to pass a reference to the head of the list to any method, because each method should already have access to the self._head attribute. ContactList should also have the following methods: add(name, new_number). Creates a new Node with a Contact object as its _data. The new Node is then added…write a java method with followin instraction : Write a method called prioritizeQueue to give priority for vaccination for elderly persons. The method is to be in a class called VaccinationQueue and has two parameters q1 and q2 type ArrayQueue. The q1 and q2 data are of type Integer. Assume that initially q1 is not empty and q2 is empty. The method will insert from q1 those elements towards the beginning of the queue (front) q2 whose data is greater than or equal to 45 and will insert those elements whose data is less than 45 and greater than or equal to 18 towards the end (rear) of q2. Any data item less than 18 of q1 will not be inserted in q2. It returns the number of elements added to q2. Class ArrayQueue and all its methods including iterator are available for use. You can also create temporary queues. You are not allowed to use arrays or any other data structure. Example: Before method call: front rear q1: 14 25 50…
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- a Java Program: Write a method called queuesCommonCount to be included in the class queueEx that accepts two parameters q1 and q1 of type ArrayQueue. The method finds the number of elements, which are common in q1 and q2 and returns this number. Class ArrayQueue and all its methods are available for use. Use iterator to access elements of q1. Do not use any iterator to access the elements of q2. You can use a temporary queue in your method. Example: q1: 10 5 12 7 11 15 20 q2: 14 9 7 20 10 12 18 20 The method will return 4 as 4 elements, namely 10, 12, 7 and 20 of q1 and q2 are same. public class QueueEx { public static<E> int queuesCommonCount(ArrayQueue<E> q1, ArrayQueue<E> q2) {Trying this again since part of my question keeps disappearing Given main() in the ShoppingList class, define an insertAtEnd() method in the ItemNode class that adds an element to the end of a linked list. DO NOT print the dummy head node. Ex. if the input is: 4 Kale Lettuce Carrots Peanuts where 4 is the number of items to be inserted; Kale, Lettuce, Carrots, Peanuts are the names of the items to be added at the end of the list. The output is: Kale Lettuce Carrots Peanuts public class ItemNode { private String item; private ItemNode nextNodeRef; // Reference to the next node public ItemNode() { item = ""; nextNodeRef = null; } // Constructor public ItemNode(String itemInit) { this.item = itemInit; this.nextNodeRef = null; } // Constructor…Write a method called removeLeastValue in the class KWLinkedList (a class for doubly linked list as discussed in the lectures). The method will search for the smallest value in the double linked list of integers and removes the node that contains that value. Assume that the list must contain at least two nodes. Assume further that the smallest value never be in the first node. Do not use Iterators and you are not allowed to call any of the KWLinkedList class methods. Example: Iist (before method call): 7 10 2 3 5 3 9 Iist (after method call): 7 10 3 5 3 9 Method heading: public void removeLeastValue()