Which of the following is an example (or examples) of a correct way to use a generic type? (you may select zero, one, or more answers) a. ArrayList b. ArrayList C. ArrayList
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- 4. Now examine the ArrayList methods in the above table, a) Which method retrieves elements from the ArrayList? b) Which method replaces the value of an element that already exists in the ArrayList? c) Which two methods initializes the value of an element? d) How do the two methods in (c) differ? Which method(s) would be appropriate in the above Java program (after we convert it to work with ArrayLists)?For any element in keysList with a value greater than 50, print the corresponding value in itemsList, followed by a comma (no spaces). Ex: If the input is: 32 105 101 35 10 20 30 40 the output is: 20,30, 1 #include 2 3 int main(void) { const int SIZE_LIST = 4; int keysList[SIZE_LIST]; int itemsList[SIZE_LIST]; int i; 4 6 7 8 scanf("%d", &keysList[0]); scanf ("%d", &keysList[1]); scanf("%d", &keysList[2]); scanf("%d", &keysList[3]); 10 11 12 13 scanf ("%d", &itemsList[0]); scanf ("%d", &itemsList[1]); scanf("%d", &itemsList[2]); scanf ("%d", &itemsList[3]); 14 15 16 17 18 19 /* Your code goes here */ 20 21 printf("\n"); 22 23 return 0; 24 }The ArrayList is created using the following syntax: String[] array = {"red", "green", "blue"}; ArrayList list Display all the elements of this list using: a) foreach loop b) foreach method with lambda := new ArrayList(java.util.Arrays.asList(array));
- Please answer in python Write a method called add_racer which takes in a Boat object and adds it to the end of the racers list. The function does not return anything. Write a method called print_racers which loops through racers and prints the Boat objects. This function takes in no parameters (other than self) and returns nothing. Write a method called count that returns the number of racers. Write a method called race. The race function calls the move function for all of the racers in the BoatRace. Once all the racers have moved, call the print_racers method to display information about the progress of each boat. Then, check if any of the racer’s current_progress is greater than or equal to the race’s distance. If so, then return a list of all of the racers whose current_progress is greater than or equal to distance. If no racer has finished the race then repeat the calls to move and check until at least one racer has finished the race. Examples: Copy the following if…Q2. See following classes from Java reference manual and list any five methods prototypes along with two to three lines description of method functionality. a) Array class b) ArrayList class c) Linked List classjava Create a static method that: is called appendPosSum returns an ArrayList of Integers takes one parameter: an ArrayList of Integers This method should: Create a new ArrayList of Integers Add only the positive Integers to the new ArrayList Sum the positive Integers in the new ArrayList and add the Sum as the last element For example, if the incoming ArrayList contains the Integers (4,-6,3,-8,0,4,3), the ArrayList that gets returned should be (4,3,4,3,14), with 14 being the sum of (4,3,4,3). The original ArrayList should remain unchanged. public static void main(String[] args) { Scanner in = new Scanner(System.in); int size = in.nextInt(); ArrayList<Integer> list = new ArrayList<>(); for(int i=0; i < size; i++) { list.add(in.nextInt()); } System.out.println(appendPosSum(list));
- Question 1 Which of the following is NOT true about ArrayLists? ArrayLists can only hold Objects, not primitive types. ArrayLists have built in methods that you can call on them for quick add, delete, search, etc. ArrayLists can hold more elements than an Array. ArrayLists have a flexible size which you do not have to define at declaration.To declare an array of String called myStrings, we would code: ArrayList<Blank 1> myStrings = Blank 2 ArrayList<String>();private static final List<Polynomial> polyList = new ArrayList<>(); //main here public static void main(String[] args) { processPolyList(); } //=============================================================================================== // method: fromFile / returns: Arraylist // description: Opens a file takes a String and tokenizes it into an ArrayList of of expressions //=============================================================================================== public static ArrayList<String> f
- #Steps: Create a Main class. Declare an ArrayList in the main() method and store the given values in it. Create an array called output of the size of the ArrayList. Iterate through for-loop to get each element from the array List and load it into the array using the get() method of the list. Print the array to see the loaded elements. import java.util.ArrayList; import java.util.List; public class Main { public static void main(String[] args) { List<String> nameList = new ArrayList<String>(); nameList.add("Robert"); nameList.add("Samson"); nameList.add("Alex"); nameList.add("William"); System.out.println("Elements of List: " + nameList); // Create an array of the same size as nameList Hint: use size() method // Fetch the elements from the nameList and insert into newly created array // Hint: Use get() method to fetch the elements from…Which of the above choices (A, B, C or D) prints the name of each animal in the animalList object created from a previous question?// Assume that these accessor and mutator methods exist in the Animal class: // public void setAnimalName(String newName) { ... } // public String getAnimalName() { ... } // A for(int i = 0; i < animalList.length(); i++) { Animal tempAnimal = animalList[i]; System.out.println( tempAnimal.getAnimalName()); } // B for(int i = 0; i < animalList.length; i++) { Animal tempAnimal = animalList[i]; System.out.println( tempAnimal.getAnimalName()); } // C for(int i = 0; i < animalList.length; i++) { Animal tempAnimal = animalList[i]; System.out.println( tempAnimal.setAnimalName()); } // D for(int i = 0; i < animalList.length; i++) { Animal tempAnimal = animalList[i]; System.out.println(tempAnimal.animalName); }