In PriorityQueue.java, write code for the following new functions
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In PriorityQueue.java, write code for the following new functions:
1. public boolean add( PriorityQueueNode x )
This function adds a new node x to the priority queue. The node is added to
the heap by comparison of the rating attribute. It involves the “percolate
up” process and returns true when finished.
2. public PriorityQueueNode remove( )
This function removes the minimum element of the priority queue and returns
it. It involves a call to percolateDown( int hole ).
3. private void percolateDown( int hole )
This function takes the position of the next available hole in the priority queue
and uses it to bubble the elements through the heap until the heap property is
restored.
4. public void display( )
This function prints out a formatted tree representation of the priority queue
showing only the rating of each node. The output should resemble that of a
tree. Tip: you may use the StringBuilder class and the String
format( ) method. Empty nodes in the tree can be replaced with “--”.
Example output is shown below:
Step by step
Solved in 2 steps
- Hi! Currently stuck in a java problem and would appreciate the help! Question: You have probably heard about the deque (double-ended queue) data structure, which allows for efficient pushing and popping of elements from both the front and back of the queue. Depending on the implementation, it also allows for efficient random access to any index element of the queue as well. Now, we want you to bring this data structure up to the next level, the teque (triple-ended queue)! The teque supports the following four operations: push_back x: insert the element ?x into the back of the teque. push_front x: insert the element ?x into the front of the teque. push_middle x: insert the element ?x into the middle of the teque. The inserted element ?x now becomes the new middle element of the teque. If ?k is the size of the teque before the insertion, the insertion index for ?x is (?+1)/2(k+1)/2 (using 00-based indexing). get i: prints out the ?thith index element (00-based) of the teque.…ALL TRUE OR FALSE QUESTIONS 1. A "deque" allows an application to enqueue and dequeue from both front and rear of a queue. 2. The Queue ADT of the text is defined to hold elements of type Objec 3. Java supports inheritance of interfaces. 4. The text's array-based queue implementations use the fixed-front approach. 5. If N represents the number of elements in the queue, then the dequeue method of the ArrayBoundedQueue class is O(1). 6. When an object of class LinkedQueue represents an empty queue, its rear variable is 0. 7. A standard linked list provides a good implementation of a "Deque". 8. When implementing a queue with a linked list, the front of the queue is also the front of the linked list. 9. Our LinkedQueue class implements the QueueInterface interface. 10. The text's array-based queue implementations use the floating-front approach.java method : 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 70 35 45 19 10 21…
- A) Write a generic Java queue class (a plain queue, not a priority queue). Then, call it GenericQueue, because the JDK already has an interface called Queue. This class must be able to create a queue of objects of any reference type. Consider the GenericStack class shown below for some hints. Like the Stack class below, the GenericQueue should use an underlying ArrayList<E>. Write these methods and any others you find useful: enqueue() adds an E to the queue peek() returns a reference to the object that has been in the queue the longest, without removing it from the queue dequeue() returns the E that has been in the queue the longest, and removes it from the queue contains(T t) returns true if the queue contains at least one object that is equal to t *in the sense that calling .equals() on the object with t the parameter returns true.* Otherwise contains returns false. size() and isEmpty() are obvious.(JAVA) Data Structures - Implementing a Queue using a Circular Array I've added the QueueOverflowException class, but I'm having trouble with the ArrayQueue Class. If you can do so, can you please add comments to every class and method in just the ArrayQueue class. ****THIS IS THE CLASS THAT NEEDS ADDITIONAL CODE.***** public class ArrayQueue implements QueueInterface{ public static final int MAX = 10; private T elements[]; private int front; private int rear; public ArrayQueue() { //awkward syntax! elements = (T[]) new Object[MAX]; front = MAX - 1; rear = MAX - 1; } //implement your methods here please} ***THE FOLLOWING CLASSES ARE GIVEN AND NEEDED TO COMPLETE THE PROGRAM**** public class Tester{ public static void main() { QueueInterface q = new ArrayQueue(); for (Character ch = 'A'; ch < 'F'; ++ch) q.insert(ch); while (!q.isEmpty()) System.out.println(q.remove());…In Java. The following is a class definition of a linked list Node:class Node{int info;Node next;}Show the instructions required to create a linked list that is referenced by head and stores in order, the int values 13, 6 and 2. Assume that Node's constructor receives no parameters.
- You need to implement a class named "Queue" that simulates a basic queue data structure. The class should have the following methods: Enqueue(int value) - adds a new element to the end of the queue Dequeue() - removes the element from the front of the queue and returns it Peek() - returns the element from the front of the queue without removing it Count() - returns the number of elements in the queue The class should also have a property named "IsEmpty" that returns a boolean indicating whether the queue is empty or not. Constraints: The queue should be implemented using an array and the array should automatically resize when needed. All methods and properties should have a time complexity of O(1) You can write the program in C# and use the test cases to check if your implementation is correct. An example of how the class should be used: Queue myQueue = new Queue(); myQueue.Enqueue(1); myQueue.Enqueue(2); myQueue.Enqueue(3); Console.WriteLine(myQueue.Peek()); // 1…In Java In this assignment, you should provide a complete CircularQueueDriver class that fullytests the functionality of your CircularQueue class that you have improved in Lab 8. YourCircularQueueDriver class should:• Instantiate a 3-element CircularQueue.• Use a loop to add strings to the queue until the add method returns false (whichindicates a full queue).• Call showQueue.• Use a loop to remove strings from the queue until the remove method returns null(which indicates an empty queue). As you remove each string from the queue, print theremoved string.Sample Run:Monsieur AMonsieur BMonsieur Cremoved: Monsieur Aremoved: Monsieur Bremoved: Monsieur C CircularQueue Class: public class CircularQueue { private String[] queue; // array that implements a circular queue private int length = 0; // number of filled elements private int capacity; // size of array private int front = 0; // index of first item in queue private int rear = 0; // one past the index of the last item…Consider the following implementation of the node and doubly linked-list: Extend the class doubly_linked_list by adding the following methods: *Largest method .This method should return the largest element in a doubly linked-list. *Delete method. This method should delete the first occurrence of an element (value) from a doubly linked-list. USE C++ PLEASE THE CODE : template <class type> class node{public:type info;node<type> * next;// nextnode<type> * prev;//back }; template <class type>class doubly_linked_list {//data membersprivate:node<type> *head, *tail;int length;public:doubly_linked_list(){head = tail = NULL;length = 0;}bool isEmpty(){ // return (head==NULL);if (head == NULL)return true;elsereturn false;} void Append(type e){node<type> *newnode = new node<type>;newnode->info = e;if (isEmpty()){newnode->next = NULL;newnode->prev = NULL;head = newnode;tail = newnode;}else{tail->next = newnode;newnode->prev =…
- In java The following is a class definition of a linked list Node:class Node{int info;Node next;}Assume that head references a linked list and stores in order, the int values 5, 7 and 9. Show the instructions needed to delete the Node with 5 so that head would reference the list 7 and 9.Answer it fast and correct. Don't stuck. i ll rate Fill in the underlines below to complete a function template, reverseStack, that takes as a parameter a stack object and uses a queue object to reverse the elements of the stack. C++ code Answer: template <class Type> void reverseStack(stackType<Type> &s) { linkedQueueType<Type> q; Type elem; while (_________________) // The stack is not empty. { // Copy the top element of the stack into the queue //and remove it from the stack. elem = _________________; _________________; _________________; } while (_________________) // The queue is not empty. { // Copy the front element of the queue into the stack //and remove it from the queue. elem = _________________; _________________; _________________; } }Write a program for implementing queue using linked lists, for which you should use a structure to create a node with data and the next pointer. The program should be able to insert, delete and display nodes in the queue. The user will be asked to enter his choice either to insert a node (enqueue), delete a node (dequeue), display or to exit from the program.The options for the user should be as the following:1. Insert a node (Enqueue)2. Delete a node (Dequeue)3. Display4. Exit For example if user selected option 1 then the following should appear in the output:Enter the value to insert:Node is inserted If user selected option 2 then the following should appear in the output:Deleted Element is: If the user selected option 3 then the program should display the elements that are available in the queue The program will keep on running and taking inputs from the user until he selects the 4th option to exit.