The implementation for the priority queue in this chapter starts by modifying the Heap class so that the order of the elements can be determined by the programmer.Earlier the heap kept the highest value on the top of the container, but now it willbe altered to allow for either the highest or the lowest. The changes made to thisclass involve specifying another template parameter, which will be used for thecomparison operator. Altering the push() and pop() functions to make use of the comparison operator instead of assuming that the largest value element will be on top. use c++ to code.
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The implementation for the priority queue in this chapter starts by modifying the
Heap class so that the order of the elements can be determined by the programmer.Earlier the heap kept the highest value on the top of the container, but now it willbe altered to allow for either the highest or the lowest. The changes made to thisclass involve specifying another template parameter, which will be used for thecomparison operator. Altering the push() and pop() functions to make use of the
comparison operator instead of assuming that the largest value element will be on
top.
use c++ to code.
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- Import the ArrayList and List classes from the java.util package to create a list of phone numbers and also import the HashSet and Set classes from the java.util package to create a set of unique prefixes. Create a class called PhoneNumberPrefix with a main method that will contain the code to find the unique prefixes. Create a List called phoneNumbers and use the add method to add several phone numbers to the list. List<String> phoneNumbers = new ArrayList<>(); phoneNumbers.add("555-555-1234"); phoneNumbers.add("555-555-2345"); phoneNumbers.add("555-555-3456"); phoneNumbers.add("444-444-1234"); phoneNumbers.add("333-333-1234"); Create a Set called prefixes and use a for-each loop to iterate over the phoneNumbers list. For each phone number, we use the substring method to extract the first 7 characters, which represent the prefix, and add it to the prefixes set using the add method. Finally, use the println method to print the prefixes set, which will contain all of…You may find a doubly-linked list implementation below. Our first class is Node which we can make a new node with a given element. Its constructor also includes previous node reference prev and next node reference next. We have another class called DoublyLinkedList which has start_node attribute in its constructor as well as the methods such as: 1. insert_to_empty_list() 2. insert_to_end() 3. insert_at_index() Hints: Make a node object for the new element. Check if the index >= 0.If index is 0, make new node as head; else, make a temp node and iterate to the node previous to the index.If the previous node is not null, adjust the prev and next references. Print a message when the previous node is null. 4. delete_at_start() 5. delete_at_end() . 6. display() the task is to implement these 3 methods: insert_at_index(), delete_at_end(), display(). hint on how to start thee code # Initialize the Node class Node: def __init__(self, data): self.item = data…You need to implement a class for Dequeue i.e. for double ended queue. In this queue, elements can be inserted and deleted from both the ends. You don't need to double the capacity. You need to implement the following functions - 1. constructor You need to create the appropriate constructor. Size for the queue passed is 10. 2. insertFront - This function takes an element as input and insert the element at the front of queue. Insert the element only if queue is not full. And if queue is full, print -1 and return. 3. insertRear - This function takes an element as input and insert the element at the end of queue. Insert the element only if queue is not full. And if queue is full, print -1 and return. 4. deleteFront - This function removes an element from the front of queue. Print -1 if queue is empty. 5. deleteRear - This function removes an element from the end of queue. Print -1 if queue is empty. 6. getFront - Returns the element…
- Problem 3: In classroom, we implemented MyStack by including an ArrayList as private data field of the class (using composition). In this problem, we will use another way to implement the stack class. Define a new MyStack class that extends ArrayList. Draw the UML diagram for the classes and then implement MyStack. Write a test program that prompts the user to enter five strings and displays them in reverse order. (1) Your UML diagram: (3)You are required to complete the LinkedList class. This class is used as a linked list that has many methods to perform operations on the linked list. To create a linked list, create an object of this class and use the addFirst or addLast or add(must be completed) to add nodes to this linked list. Your job is to complete the empty methods. For every method you have to complete, you are provided with a header, Do not modify those headers(method name, return type or parameters). You have to complete the body of the method. package chapter02; public class LinkedList { protected LLNode list; public LinkedList() { list = null; } public void addFirst(T info) { LLNode node = new LLNode(info); node.setLink(list); list = node; } public void addLast(T info) { LLNode curr = list; LLNode newNode = new LLNode(info); if(curr == null) { list = newNode; } else { while(curr.getLink() !=…Overview: In this assignment, we will be creating an HTML Checker program that will check the syntax of HTML tags. You will write a class that stores the contents of an HTML page as a queue of HTMLTags. Your class will also be able to fix invalid HTML tags. Your HTMLManager will use stacks and queues to figure out whether the tags match and fix the mistakes it finds. There will also be a number of Instructor-provided files to help with this assignment in order to make your work a little less :-) Topics: queues, stacks Background on HTML: Web pages are written in a language called “Hypertext Markup Language”, or HTML. An HTML file consists of text surrounded by markings called tags. Tags give information to the text, such as formatting (bold, italic, etc) or layout (paragraph, table, list, etc). Some tags specify comments or information about the document (header, title, document type). A tag consists of a named element between less-than < and greater-than > symbols. For…
- Implement the Plates class buildMap function so that it populates the HashMap with the state abbreviations as keys and the counts of how many each appear in the file as values. Sometimes, the parking attendant will add special notation to help her remember something about a specific entry. There are just non alphabetic characters that she adds to the state - your program should ignore these characters so that an entry like NY* still counts toward the NY plate count. She is also very inconsistent with how she enters the plates. Sometimes she uses upper case, sometimes lowercase, and sometimes she even uses a mix. Be sure to account for this in your program. Only add information for plates in New England (Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, and Connecticut). Plates.java import java.util.Arrays; import java.util.HashMap; import java.util.HashSet; import java.util.Map; import java.util.Set; public class Plates { private Map<String, Integer> plateMap;…Design and implement an insertSorted() method for the MyArrayList class. The method should receive a single object and insert it in its correct position. You can assume that the calling array is already in a sorted order. The calling array is therefore updated. Follow the three step method for designing the method. Develop the java code for the method. Create a test program to test the method thoroughly using the Integer wrapper class.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…
- You are the manager of the train depot. One of your tasks is to efficiently order the train cars so that it is easy to attach and detach them. In this assignment, you will implement Train Cars program that reads car details from the file called car.txt (given) and stores them in a LinkedList data structure. Cars in the train are linked in a specific order. Each car in the train contains various materials that must be attached and detached in the most efficient manner possible. Each car ( node of type Car) has a stop number, factory name, material name. Stop number – determines which stop the car must be detached, use this to order the train cars. They should be ordered either in increasing or decreasing stop numbers. Factory Name – name of the factory at which the car must be detached Material Name – name of the material being transported in the car. For example, the Jiffy Mix plant at stop 2 needs sugar, flour, cornmeal, etc. Write the program to perform each operation…In this task, a skip list data structure should be implemented. You can follow the followinginstructions:- Implement the class NodeSkipList with two components, namely key node and arrayof successors. You can also add a constructor, but you do not need to add anymethod.- In the class SkipList implement a constructor SkipList(long maxNodes). The parameter maxNodes determines the maximal number of nodes that can be added to askip list. Using this parameter we can determine the maximal height of a node, thatis, the maximal length of the array of successors. As the maximal height of a nodeit is usually taken the logarithm of the parameter. Further, it is useful to constructboth sentinels of maximal height.- In the class SkipList it is useful to write a method which simulates coin flip andreturns the number of all tosses until the first head comes up. This number representsthe height of a node to be inserted.- In the class SkipList implement the following methods:(i) insert, which accepts…4 O T O I D06 It is time for you to demonstrate your skills in a project of your own choice. You must DESIGN, ANALYSE AND CODE any method for the GENERIC MyLinkedList class that will manipulate the linked list. You can decide yourself what it should be following the specification below: 1. Purpose: The method must make logical sense - it should be of some purpose to somebody. You should describe in the text who will use the method for which purpose. 2. Clearly explain the problem. Then clearly explain how your method will solve it. 3. Test program: Test the method using a wranned class like Integer l Filters Add a caption. > Status (Contacts)