Assume ArrayList productList contains 10,000 items. Which operation is performed fastest? Group of answer choices productList.remove(999) productList.remove(0) productList.add(0, item) productList.add(item)
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- Remaining Time: 53 minutes, 02 seconds. v Question Completion Status: QUESTION 7 Analyze the following code and select that right printed result ArrayList arrstr=new ArrayList(); arrstr.add("Bashful"); arrstr.add("awful"); arrstr.add("jumpy"); arrstr.add("Happy"); arrstr.set(2, "hello"); System.out.println(arrstr); O [Bashful, awful, jumpy, hello, Happy] O [Bashful, awful, hello, jumpy. Happy] O [Bashful, awful, hello, Happy] O [Bashful, awful, jumpy, hello] QUESTION 8 Analyze the following code and select the right print result Annavl ict Click Save and Submit to save and submit. Click Save All Answers to save all answers. boton -new Annavl ict(\• H 10Add courses to the cart: Customer will only be able to add a course if the title is in the master’s list.Once added, the course name and its price need to be added to a shopping cart list, the information -title and price - needs to be separated (as in master list) by any delimiter of your choice (like: colon,space, dash etc). Customer should be able to view the shopping cart list after adding a course. Delete a course from cart: Customer will enter the name of the course and the program will lookfor the course in the shopping cart list to be deleted from. View the shopping cart list after deletion. Check out course: Customer should be able to view the list of the courses and their individualprice that are being selected by the user, then view the total price of all the courses in theshopping cart. Again, you need to use a for loop to iterate over the shopping list, separate the titleand price and view the information as shown in sample I/O. Directly printing the list will…* Question Completion Status: QUESTION 10 Analyze the following code and select the right print result SinglelinkedList testInstance = new SingleLinkedList(); testInstance.add("tom"); testInstance.add("dick"); testInstance.add("harry"); testInstance.add(2, "sam"); testInstance.remove(0); System.out.println(testInstance.toString()); O (tom ==> dick ==> sam ==> harry] O (dick ==> sam ==> hary] O (tom ==> dick ==> sam] O (tom ==> dick ==> hary] Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers Close Wim exercice3.docx exercice2.docx TOSHIBA 近
- Using Java programming language create a linked list named Cars with four elements: "SUV cars", "Pickup cars", "Sport cars", and "Sedan cars". Apply the following activities on the code you’ve created and provide screen shot of each result: Add a new element “Classic car” at the beginning of the linked list using iterator. Add a new element “Economic cars" after the element "Sedan Cars" using iterator. Print the LinkedList backward from the last element to the first element using hasPrevious()Array Lists & Graphics: Create a project in Eclipse named Blinds. Include two classes: Rainbow and RainbowViewer. Using the colours in Table 1 in any order you want, create a 13 rows x 1 column arrangement of Rectangles (width = 500, height = 50) starting at x = 50, y = 50 with the BLACK square. Use an ArrayList to store the 13 rectangles that form the blinds. [Hint: While creating each rectangle, you can use a for loop. When ready, use the .fill method to paint them onto a JFrame (600x800) with title: “My ColourfulBlinds”.]Question 10 Which of the following method is used to get the position of a particular element in an ArrayList? contains() indexOf() get() read()
- Urgent Requirement: There will one question related to ArrayList class similar to the following question. The following driver has created a an ArrayList of Point objects. write a method that moves all the points with the value of x greater than its value of y to the end of the list. .You 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…ion C Lons Employee -id: int -name String - dob : Date -staff : ArrayList +setid(int): void +getld() : int +setName(String): void +setDob(Date) : void +getDob(): Date +addStaff(Employee) : void +getStaff() : ArrayList
- # 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…When you print an instance of the class Food in Question 1, you get something like this: Building up your answer coder in Question 1, write a str 0 method for the class Food so that printing an instance of the class results in a string that is a combination of the value of the attributes taste and name, separated by a blank: DO NOT call the function. For example:Question 9 Which of the following class implements the List interface? ArrayList Listlterator AbstractList Collection