Assume you have a method (shown below) inside the KWArrayList class, what does this method do? public boolean ArrayMethod (E item) { if (size == capacity) reallocate(); theData[size] = item; size++; return true; } A Add an item to the beginning of the list and return true. B Remove the first occurrence of an item from the list and return true. Add an item at the end of the list and return true.
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- Create an addAll method into the LList class given below. the method should add an aray of items to the end of the list. method header: public void addAll(T[] items)Computer Science create a method +addToList(o:E):void that adds the object (o) to the ArrayList referenced by the instance variable list. create a method +removeFromBackOfList():E that removes the object at the back of the ArrayList and returns it.Write the following method that returns themaximum value in an ArrayList of integers. The method returns null if thelist is null or the list size is 0.public static Integer max(ArrayList<Integer> list)Write a test program that prompts the user to enter a sequence of numbers endingwith 0 and invokes this method to return the largest number in the input.
- Project Description: In this project you implement an ArrayStack ADT and use the stack for implementing the following methods: a) Reverse an array of Words: Accept an array of words as input parameter and return an array of words in reverse order. Use the method signature: public static String[] reverse Words (String[] wordList) Example Input: Bird Cat Dog Elephant Output: Elephant Dog Cat BirdWrite the following method that returns an ArrayList from a set:public static <E> ArrayList<E> setToList(Set<E> s)public static ArrayList findExactString(String s, ArrayList myArray) { return null; } // Use the above method, findExactString, as a helper method to implement addWithoutDuplication method. The addWithoutDuplication method has the following properties: 1- It takes two arguments, a string s and an ArrayList myArray of type string. 2- It returns an integer which represents the number of occurrences of the string s in myArray while attempting to add it. 3- If myArray is null, it returns -1 4- If adds the string s to the end of the ArrayList myArray if the string s is not already there. public static int addwithout Duplication(String s, ArrayList myArray) { return -1;
- Project Description: In this project you implement an ArrayStack ADT and use the stack for implementing the following methods: a) Reverse an array of Words: Accept an array of words as input parameter and return an array of words in reverse order. Use the method signature: public static String[] reverseWords (String[] wordList) Example Input: Bird Cat Dog Elephant Output: Elephant Dog Cat BirdIf N represents the number of elements in the collection, then the contains method of the ArrayCollection class is O(1). True or False If N represents the number of elements in the list, then the index-based add method of the ABList class is O(N). True or FalsegetListRowIndices Method public static java.util.ArrayList<java.lang.Integer> getListRowIndices(int[][] array, int rowLength) This method returns an ArrayList with the indices of rows of the two-dimensional having a length that corresponds to rowLength. You may only use one auxiliary method. The method should create an ArrayList that is passed to the auxiliary in order to place the indices (if any). If no indices are found, an empty (size of 0) ArrayList will be returned. You can assume the array parameter will not be null and every row of the two-dimensional array has an array with a size of at least 0. Your implementation must be recursive and you may not use any loop construct. Do not use ++ or -- in any recursive call argument. It may lead to an infinite recursion. For example, use index + 1, instead of index++. Parameters: array - rowLength - Returns: ArrayList<Integer>
- en "MyDoubleLinkedList" class: te a method called "PrintListInReverse" to print the list backward. example, GivenWrite the following method that returns the sum of all numbersin an ArrayList:public static double sum(ArrayList<Double> list)Write a test program that prompts the user to enter five numbers, stores them inan array list, and displays their sum.public class ShoppingListDriver{ public static void main(String[] args){ ShoppingList sl=new ShoppingList(3);sl.insert(null);sl.insert(new Item("Bread", "Carb Food", 2, 2.99));sl.insert(new Item("Seafood","Sea Food", -1, 10.99));sl.insert(new Item("Rice", "Carb Food",2, 19.99));sl.insert(new Item("Salad Dressings","Dessing", 2, 19.99));sl.insert(new Item("Eggs", "Protein",2, 3.99));sl.insert(new Item("Cheese","Protein", 2, 1.59));sl.insert(new Item("Eggs", "Protein",3, 3.99));sl.printNames();sl.print(); System.out.println("After removing Eggs:");sl.remove(new Item("Eggs","Protein",0,0));sl.printNames();sl.print(); }}