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- The type deduction features that decltype introduces are meant to be used under which circumstances? Owhen using it improves code readability O when the type cannot be obtained by other means O when the previously defined data type is not sufficient to hold the required data O when the variable must be converted to a different data type than the one originally declaredUSING C++ Random Number Guesser Write a derived class of the NumberGuesser class named RandomNumberGuesser. The derived class should override the behavior of the getCurrentGuess method. It may also add member data and its own constructor. It may also override the higher(), lower() and reset() methods as you see fit. I have written a NumberGuesser class to make things easier. // NumberGuesser.h #ifndef NUMBERGUESSER_H #define NUMBERGUESSER_H #include <iostream> class NumberGuesser { protected: int low; int originalLow; int high; int originalHigh; public: NumberGuesser(int l, int h) { low = originalLow = l; high = originalHigh = h; } virtual int getCurrentGuess() { return (high + low) / 2; } virtual void higher() { low = getCurrentGuess() + 1; } virtual void lower() { high = getCurrentGuess() - 1; } virtual void reset() { low = originalLow; high = originalHigh;…Which of the following are not true about polymorphism? A It means single form. B It is the passing of variables to a child class. © It is the method of recycling a block of code and changing it to another form. D It is the method used for the protection of data. E) None of the other choices are correct.
- For this assignment *c++ & no ifstream, you need to build a class that contains basic information about students and courses that have those students on the roster. You also need to build a menu that supports basic CRUD functionality for those courses. The requirements are as follows: The student class should contain the following data about a student: Name (dynamic char array) Classification (char) Major (dynamic char array) StudentId (can be an int or a dynamic char array) The course class should contain the following data about a course: Course Name (dynamic char array) Course Code (char array of size 7) Location (char array of size 10) Roster (dynamic student array) The menu program should act as a driver program that manages a dynamically allocated array of courses and allows the user to: Add a course to the list Add students to a course Update a course to change any of the data above including edits to students or adding/removing students from the roster List courses…Design and implement a Java class named Book with two data members: title and price. The class should have suitable constructors, get/set methods, and the toString method. Design and implement another Java class named BookShelf which has an ArrayList data member named bookList to store books. The class should have suitable constructors, get/set methods, and the toString method, as well as methods for people to add a book (prototype: addBook(Book book)), remove a book (prototype: removeBook(Book book)), and search for a book (prototype: findBook(Book book)). Test the two classes by creating a Bookshelf object and five Book objects. Add the books to the bookshelf. Display the contents of the bookshelf. Test the removeBook and findBook methods as well. Take screenshots of your tests and submit them with your Java code (not the whole project)Please help write this in C++, I am kinda lost. bagDifference: The difference of two bags is a new bag containing the entries that would be left in one bag after removing those that also occur in the second. Design and specify a method difference for the ArrayBag that returns as a new bag the difference of the bag receiving the call to the method and the bag that is the method's parameter. The method signature is: ArrayBag<ItemType> bagDifference(const ArrayBag<ItemType> &otherBag) const; Note that the difference of two bags might contain duplicate items. For example, if object x occurs five times in one bag and twice in another, the difference of these bags contains x three times. Here is the all of the file: ArrayBag.cpp: #include <string>#include "ArrayBag.h" template <class T>ArrayBag<T>::ArrayBag() : itemCount(0) {// itemCount = 0;} template <class T>ArrayBag<T>::ArrayBag(const ArrayBag& orig) {itemCount =…
- Which of the following are true about polymorphism? A It means many forms or multiple transformations. B It is the method of recycling a block of code and changing it to another form. It is the passing of variables to a child class. D It is the method used for the protection of data E) None of the other choices are correct.please help This class describes a tweet. A tweet has a message in it, a unique ID,* a count of the number of likes, and a count of the number of times it* has been retweeted. In addition, the Tweet class will have a static * variable to count the total number of tweets to ever be created * (retweets don't count as a new tweet).* * You may NOT import any library class.* **/public class Tweet {Help, I making a elevator simulator, I need help in writing code in the Elevator class and it's polymorphism class. I am not sure what to do next. Any help is appreciated. There are 4 types of passengers in the system:Standard: This is the most common type of passenger and has a request percentage of 70%. Standard passengers have no special requirements.VIP: This type of passenger has a request percentage of 10%. VIP passengers are given priority and are more likely to be picked up by express elevators.Freight: This type of passenger has a request percentage of 15%. Freight passengers have large items that need to be transported and are more likely to be picked up by freight elevators.Glass: This type of passenger has a request percentage of 5%. Glass passengers have fragile items that need to be transported and are more likely to be picked up by glass elevators. There are 4 types of elevators in the system:StandardElevator: This is the most common type of elevator and has a request…
- Which of the following are true about polymorphism? (Multiple choice can be selected) A It means many forms or multiple transformations. B It is the method of recycling a block of code and changing it to another form. C It is the passing of variables to a child dass. D It is the method used for the protection of data E None of the other choices are correctQuestion 1 Write a Python class named Histogram that keeps track of how many times each unique element in a given sequence occurs. This class will implement the following interface: • Histogram( sequence ) will create a histogram of all elements occurring in the given sequence. This class cannot use the dict or collections.Counter types to create instance or class variables in order to implement the following specifications! If it does, the grade for your solution will automatically be zero! However, in some cases, your code will have to return dictionaries. So note the difference between the two specifications! • get( element-None, default-e ) will return how many times given element occurs in the histogram. If no element is specified, then the get () function will retum a dictionary where keys are elements and values are number of times a given element occurs in the sequence provided to the initializer. For example, given h - Histogram( "aaabbc" ) then h.get( "b" ) should return 2,…Hi can you assist me on the problem below for a class and a test class that conforms to the following specifications: 1. The name of the class is RightTriangle 2. The class has member variables base and height 3. The class has a constructor that initializes base and height 4. The class has accessors and mutators for base and height 5. The class has a toString method that produces String representation of a RightTriangle like the following example for a triangle with base 12 and height 10. Base : 12 Height 10 6. The class has a method called findArea to compute the area of the right triangle. Here is a suggested implementation. public double findArea() { return 0.5* this.base*this.height; } 7. The class using proper naming conventions Write a test class called RightTriangleTest that conforms to the following: 1. Create an object with base = 10 and height = 20, for example myTriangle. 2. To print the toString for myTriangle. 3. To print the area of myTriangle. System.out.println(“The…