Given an JavaScript object list of books that each have a pages attribute to define the number of pages in the book, find the sum of all the pages in the object list of books using recursion. Keep in mind: The input list object may be completely empty (ex. {}) The next attribute may not be defined function getPageCount(list) { // your code here // returns an integer } Example test case: Input: { "book":"A", "pages":1, "next":{ "book":"B", "pages":2, "next":{ "book":"C", "pages":3, "next": null } } } Output: 6 Reasoning: 1 + 2 + 3 pages

Given an JavaScript object list of books that each have a pages attribute to define the number of pages in the book, find the sum of all the pages in the object list of books using recursion. Keep in mind: The input list object may be completely empty (ex. {}) The next attribute may not be defined function getPageCount(list) { // your code here // returns an integer } Example test case: Input: { "book":"A", "pages":1, "next":{ "book":"B", "pages":2, "next":{ "book":"C", "pages":3, "next": null } } } Output: 6 Reasoning: 1 + 2 + 3 pages

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter18: Stacks And Queues

Section: Chapter Questions

Problem 16PE: The implementation of a queue in an array, as given in this chapter, uses the variable count to...

See similar textbooks

Similar questions

in regards to java For this problem, I have a complete linked list program which supports the following commands from the user: insert, display, delete, average, find, insertBefore, insertAfter. insert allows them to insert a number into the current list, display will display the numbers in the current list etc. The program is complete except that I have removed the body of the method for find. Given the following class for the nodes in a linked list: public class Node { ... public Node getNext() {...} // return next field public int getData() {...} // returns data } Assuming that the variable head points to (i.e. contains the address of) the first node of a linked list, write the statements to find the first occurrence of the data value x in the linked list. For example, find(4) would return something like "Found at node position 20" or "Not found" Assume that the nodes in the linked list are counted starting from 1. Your statements will be inserted inside a method like the…
We have a parking office class for an object-oriented parking management system using java Implement the following methods for our class Add equals and hashCode methods to any class used in a List. Add a method to the Parking Office to return a collection of customer ids (getCustomerIds) Add a method to the Parking Office to return a collection of permit ids (getPermitIds) Add a method to the Parking Office to return the collection of permit ids for a specific customer (getPermitIds(Customer)) The above methods are not included in the parking office class of our class diagram. I have attached class diagrams with definitions of related classes in our system (i.e car, customer, .....)
Write a Java program that prompts a user for vehicle data and stores it in a linked list, and then sorts the list in ascending order based on miles-per-gallon and writes the sorted data to a text file, you can follow these steps: Create a class named Vehicle with private fields: make (String), model (String), and milesPerGallon (double). Include getters and setters for these fields. Implement the Comparable interface for Vehicle class and override the compareTo() method to compare vehicles based on their milesPerGallon. Create a main class (for example, VehicleDriver.java) to handle user input and perform the necessary operations. Inside the main method, create a BufferedReader object for user input. Prompt the user to enter the number of vehicle data they want to enter and store it in a variable (for example, nVehicles). Use a loop to iterate nVehicles times and prompt the user to enter make, model, and miles per gallon for each vehicle. Create Vehicle objects using the input data…
In java, Implement a method that removes all duplicates. Keep the first instance of the element but remove all subsequent duplicate elements.public void removeDuplicates() see the picture for the right output. Given files: Demo6.java public class Demo6 { public static void main(String[] args) { MyLinkedList<String> list = new MyLinkedList<>(); TestBench.addToList(list); TestBench.addToList(list); TestBench.addToList(list); TestBench.addToList(list); for (int x = 0; x < list.size(); x += 1 + x/3) { System.out.println("Removing element at index: " + x); list.remove(x); } System.out.println("Result"); System.out.println(list); System.out.println("Shuffling"); list.shuffle(7777); System.out.println(list); System.out.println("Removing duplicates (keeping first instance)"); list.removeDuplicates(); System.out.println(list); }} TestBench.java import java.util.AbstractList; public class TestBench { public static…
Apply the methods in the ListIterator interface to write a Java program in NetBeans that creates a LinkedList of four elements of type string, namely: Java, C#, PHP and Python.The program should then print out the elements initially in the original order, and then afterwards in reverse order using the ListIterator methods. In this case, the following is the expected output: Run: original order of strings: Java C# PHP Python Reverse order of strings: Python PHP C#Java BUILD SUCCESSFUL
Provide a different implementation of ChoiceQuestion. Instead of storing the choices in an array list, the addChoice method should add the choice to the question text. For this purpose, an addLine method has been added to the Question class. Use the following files: Question.java /** A question with a text and an answer.*/public class Question{ private String text; private String answer; /** Constructs a question with empty text and empty answer. */ public Question() { text = ""; answer = ""; } /** Sets the answer for this question. @param correctResponse the answer */ public void setAnswer(String correctResponse) { answer = correctResponse; } /** Checks a given response for correctness. @param response the response to check @return true if the response was correct, false otherwise */ public boolean checkAnswer(String response) { return response.equals(answer); } /** Add a line of text to…
Write a BlueJ project consisting in a class named Lecture whose goal is to store a list of the student names (of type String) attending it. In addition to declaring and initializing the necessary fields, the class has to implement: • A method boolean addStudent(String name) that adds a name to the (internal) list and returns an appropriate value (see Hint): the returned boolean value must be the same returned by the method add of the “internal list”. • A method int getHomonymNumber(String name) that returns the number of students that have the indicated name. • A method void printCSList() that prints the list of student names, in one single line and separated by a comma. For example: Goofy, Donald, Mickey Notice that you may not print a comma after the last name! • A method boolean swap(int index1, int index2) that swaps 2 students names in the list and returns true if the operation is successful. • A method void testIt() that adds at least 4 students (at least two with the same name),…
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…
In java A supermarket wants to reward its best customer of each day, showing the customer’s name on a screen in the supermarket. For that purpose, the store keeps an ArrayList.Create a class customer having id, name, gender, and bill provide appropriate getters/setters and constructors also provide toString method.In the Store class, make an ArrayList of customers, store name, and address implement methods public void addSale(Customer c) that will add customers to the arraylist.public void RemoveCustomer(int id);public void UpdateCustomerRecord(int Id);public displayAll();public String nameOfBestCustomer() to record the sale and return the name of the customer with the largest sale. public ArrayList nameOfBestCustomers(int topN) so that it displays the top customers, that is, the topN customers with the largest sales, where topN is a value that the user of the program supplies. Write a program that prompts following menu and ============================================…
in JAVA write an ADT for a library management system which stores the title (string), author (string), ISBN (string), list price (positive integers), edition (numbers), and publisher (string). Then implement the method swap but remove the assumption that the ith and jth items in the list exist. Throw an exception ListindexoutOfBoundsException ifiorj isoutofrange
Implement PokerValue as specified in textbook page 417, problem 33(a). Your implementation must include following: 1. At least one ADT type selected from textbook files such as Stack, Queue, Collection and List for storing the poker hand. 2. Use only CardDeck.java to hold deck of cards, and Card.java to represent each card. GUI is not required. 3. Default constructor to create a five-card poker hand from CardDeck.java. Make sure the poker hand is implemented with one of the textbook ADT as set forth above. 4. Overloaded constructor accepts an array of five cards to initialize one poker hand. 5. toString() method outputs in the same format as shown in SampleActualOutput.txt 6. You may add other methods as necessary. 7. Test your PokerValue.java with supplied PokerGame.java. Submit PokerValue.java
Using the picture, ultilize Java to design a container class and implement the class PascalTriangle that will generate a Pascal Triangle from a given number of rows. Please represent each row in a triangle as a list and the entire triangle as a list of these lists, implement the class ArrayList for these lists. Inside this Java container class, develop a method called getChoice that takes in two parameters n and k (where n is the number for row and k is the position) and returns the integer value of C(n, k). For example, getChoices (5, 2) will return 7.