How does the map react when a new entry is added with an already existing key?
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How does the map react when a new entry is added with an already existing key?
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- # Create Custom Transformer Create a custom transformer, just as we did in the lecture video entitled "Custom Transformers", that performs two computations: 1. Adds an attribute to the end of the numerical data (i.e. new last column) that is equal to $\frac{x_1^3}{x_5}$ for each observation. In other words, for each instance, you will cube the $x_1$ column and then divide by the $x_5$ column. 2. Drops the entire $x_4$ feature column if the passed function argument `drop_x4` is `True` and doesn't drop the column if `drop_x4` is `False`. (See further instructions below.) You must name your custom transformer class `Assignment4Transformer`. Your class should include an input parameter called `drop_x4` with a default value of `True` that deletes the $x_4$ feature column when its value is `True`, but preserves the $x_4$ feature column when you pass a value of `False`. This transformer will be used in a pipeline. In that pipeline, an imputer will be run *before* this transformer. Keep…searchStudent: searches the studentsList by idNum, passed as parameter. If the object is found, it returns its location in the studentsList, else returns -1.It is python language Write the code that creates a new Node class. It will store data and next attributes. You only need to create the __init__ method. data and next variables will have default values, both set to None. Assume you are using the Node class from the previous connection to create a LinkedList. You have the code below, create a method that removes the first node from the LinkedList. class LinkedList: def __init__(self): self.head = None Based on the code from the last two questions, create a new LinkedList. Add 2 values to the LinkedList (there is an add method that accepts data as an argument, called add). Then call the removeFront method created in the previous question. Based on the previous questions, create a Queue class that uses the LinkedList for its data storage. Create the __init__, isEmpty, insert, remove, and size methods. Assume that LinkedList class has the add, removeFront and size methods defined. Based on the LinkedList code already…
- A map is a container that stores a collection of ordered pairs, each pair consists of a key and a value, <key, value>. Keys must be unique. Values need not be unique, so several keys can map to the same values. The pairs in the map are sorted based on keys. Group of answer choices True FalseYou may have found it somewhat tedious and unpleasant to use the debugger and visualizer to verify the correctness of your addFirst and addLast methods. There is also the problem that such manual verification becomes stale as soon as you change your code. Imagine that you made some minor but uncertain change to addLast]. To verify that you didn't break anything you'd have to go back and do that whole process again. Yuck. What we really want are some automated tests. But unfortunately there's no easy way to verify correctness of addFirst and addLast] if those are the only two methods we've implemented. That is, there's currently no way to iterate over our list and get bad its values and see that they are correct. That's where the toList method comes in. When called, this method returns a List representation of the Deque. For example, if the Deque has had addLast (5) addLast (9) addLast (10), then addFirst (3) called on it, then the result of toList() should be a List with 3 at the…Prompt: Create a virtual pet care game where players can choose a cute pet and then feed, train, or play-with it. The game is based on a simple game loop, where at the beginning of each loop, the game notifies the player of the current pet status (hungry, sleepy, bored, etc.) The player should then select the corresponding actions to improve the status of the pet. After each action, the game loop is repeated and the pet values are updated. The status should be displayed along with the corresponding messages as well as the menu of actions. Design Requirements: Implement the Pet class Create the base Pet class. It should manage variables that keep track of the pet's state, such as how hungry/sleepy/bored/happy the pet is currently. Include a function that updates the pet's state values to reflect the passage of time. If any of the variables are above some threshold (such as 40 out of 100), the function should output the corresponding message such as "<Pet name> is hungry!" Each…
- When a Random object does not have a seed value associated with it, what does it use instead?Create two enumerations that hold colors and car modeltypes. You will use them as field types in a Car class and write ademonstration program that shows how the enumerations are used.in C#, Visual Basic Write an app for Boston Airlines that allows a customer to reserve a seat on the airline’s only plane (capacity: 10 seats). Radio buttons should allow the choice between First Class and Economy. The app should then assign a seat in the first-class section (seats 1–5) or the economy section (seats 6–10). Use a one-dimensional array of type bool to represent the seating chart of the plane. Initialize all the elements of the array to false to indicate that all the seats are empty. As each seat is assigned, set the corresponding element of the array to true to indicate that the seat is no longer available. Your app should never assign a seat that has already been assigned. When the economy section is full, your app should ask the person if it is acceptable to be placed in the first-class section (and vice versa). If yes, make the appropriate seat assignment. If no, display the message “Next flight leaves in 3 hours."
- numbers = (38, 42, 15, 22, 46, 61, 88, 89, 64, 48) Partition(numbers, 5, 9) is called. Assume quicksort always chooses the element at the midpoint as the pivot. 1). What is the pivot? 2). What is the low partition? 3). What is the high partition? 4). What are the numbers after Partition(numbers, 5, 9) completes?User.java User is a class that represents a user in the music player application. Every User contains a library which stores all their Playlists. A User can create Playlists or add Playlists made by other users to their library. Additionally, they can also share Playlists with other Users. Each User has the following attributes: username - Represents the username of the user The name of a user should never be null library Represents the library of the User. A list that contains all the playlists the user has created or added. Every user's library will start with a playlist called "Liked" which stores the songs that the user has liked. This playlist should have a creation Date of 0. Save for the Liked playlist, a user's library should be sorted in order of recency. That is, a more recently created playlist should appear earlier than an older one. currentPlaying Represents the song the user is currently listening to. -If it is null, then the user is not listening to any song. User should…What function does this Syntax perform? function myMap() {var map Canvas = document.getElementById("map");var mapOptions = {center: new google.maps.LatLng(51.5, -0.2),zoom: 10};var map = new google.maps.Map(mapCanvas, mapOptions);}