Assume that the following is a method in class LinkedListExample and class KWLinkedList as explained in the lectures is available for use. What does the following non-member method do? public static void uknownMethod( KWLinkedList list1, E value1, E value2) { Listlterator iter = list1.listlterator(); int i; while (iter.hasNext()) { if (iter.next().equals(value1)) i = iter.nextindex(); list1.add(i-1, value2); }
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- create a class called RemoveDuplicates that takes a LinkedList of colors (represented using Strings) and returns a HashSet of just the unique colors in the list. In addition, your class should keep track of the number of duplicates that were discovered and removed. import java.util.*; public class Main{ public static void main(String[] args) { LinkedList<String> v = new LinkedList<String>(); v.add("red"); v.add("blue"); v.add("green"); v.add("blue"); v.add("yellow"); v.add("orange"); v.add("green"); v.add("green"); v.add("purple"); v.add("red"); RemoveDuplicates remover = new RemoveDuplicates(); HashSet<String> colors = remover.removeDuplicates(v); System.out.println(colors); System.out.println("Duplicate count = " + remover.getDuplicateCount()); } } output [red, orange, green, blue, yellow, purple] Duplicate count = 4Write a method called removeLeastNumber in the class WLinkedList (a class for doubly linked list as discussed in the lectures). The method will search for the smallest integer in the double linked list and removes the node that contains that value. Assume that the list must contain at least two nodes. Assume further that the smallest value never be in the first node. Do not use Iterators and you are not allowed to call any of the KWLinkedList class methods. Method heading: public void removeLeastValue() Example: list (before method call): 7 10 2 3 5 3 9 list (after method call): 7 10 3 5 3 9Write a method called swapltems to be considered within the SingleLinkedList class that takes two parameters, index1 and index2 of type integer. The method swaps the data of the nodes at the given indexes. If any of the parameters indexes is invalid throw IndexOutOfBoundsException. Do not call any method of class SingleLinkedList in your method. Method heading: public void swapltems(int index1, int index2) Example: index1 = 2 index2 = 4 Before method call: list: 5 10 12 9 11 7 After method call: list: 5 10 11 9 12 7
- Write a method called InsertAfter to be included in the KWLinkedList class, the method has three parameters p1, p2 and p3 of type E. The list has at least two nodes (no need to check). The method inserts a node having its data as p3 after a node having data as p2 if preceded with a node having data as p1 (after insertion it will be .p1.p2.p3.), then quits. You must use iterator to solve the problem. The method head is public void insertAfter(E p1, E p2, E p3) Example: Before run: Assume p1:5 p2: 7 p3: 100 List: 2 58 57 12 10 576 After run: List: 2 5 8 5 7 100 12 10 5 7 6Given the MileageTrackerNode class, complete main() in the MileageTrackerLinkedList class to insert nodes into a linked list (using the insertAfter() method). The first user-input value is the number of nodes in the linked list. Use the printNodeData() method to print the entire linked list. DO NOT print the dummy head node. Ex. If the input is: 3 2.2 7/2/18 3.2 7/7/18 4.5 7/16/18 the output is: 2.2, 7/2/18 3.2, 7/7/18 4.5, 7/16/18 public class MileageTrackerNode { private double miles; // Node data private String date; // Node data private MileageTrackerNode nextNodeRef; // Reference to the next node public MileageTrackerNode() { miles = 0.0; date = ""; nextNodeRef = null; } // Constructor public MileageTrackerNode(double milesInit, String dateInit) { this.miles =…Write a method “rotate” that takes a java LinkedList of integers as a parameter and an integer variable ‘count’ to represent the number of rotations. This method is to rotate the LinkedList count number of times counterclockwise (considering the head is on the left, tail on the right.
- Apply the methods in the ListIterator interface to write a Java program in NetBeans that creates a LinkedList of four elements of type string, namely: Java, C#, PHP and Python.The program should then print out the elements initially in the original order, and then afterwards in reverse order using the ListIterator methods. In this case, the following is the expected output: Run: original order of strings: Java C# PHP Python Reverse order of strings: Python PHP C#Java BUILD SUCCESSFULSuppose we want to extend the PositionalList ADT with a method, indexOf(p), that returns the current index of the element stored at position p. Write this method using only other methods of the PositionalList interface (not details of our LinkedPositionalList implementation). Write the necessary code to test the method. Hint: Count the steps while traversing the list until encountering position p public interface PositionalList<E> extends Iterable<E> { int size(); boolean isEmpty(); Position<E> first(); Position<E> last(); Position<E> before(Position<E> p) throws IllegalArgumentException; Position<E> after(Position<E> p) throws IllegalArgumentException; Position<E> addFirst(E e); Position<E> addLast(E e); Position<E> addBefore(Position<E> p, E e) throws IllegalArgumentException; Position<E> addAfter(Position<E> p, E e) throws IllegalArgumentException; E set(Position<E> p, E e) throws…Implement an instance method, called getFirstHalf, that belongs to yourThingLinkedBag. The method returns as output a linked list that includes allvalues in the first half of the bag's linked list. For example, for the following bag3-->5-->8-->9. the method returns 3-->5.If the bag includes an odd number of nodes, then the middle element belongs tothe first half and is included in the output.Make sure to include the methodheader. The bag should remain unchanged (i.e., do not remove the returnedvalues from the bag).
- Using eclipse, write a Console Java program that inserts 25 random integers in the range of 0 to 100 into a Linked List. (Use SecureRandom class from java.security package.SecureRandom rand = new SecureRandom(); - creates the random number objectrand.nextInt(100) - generates random integers in the 0 to 100 range)Using a ListItreator output the contents of the LinkedList in the original order. Using a ListItreator output the contents of the LinkedList in the reverse order.Implement a lastIndex method for the LinkedIntList class you worked on for HW4. This method takes an int argument and returns the largest index such that the int argument appears at that index in the list. If the int argument does not appear in the list, then -1 is returned. For example if the list example contained the numbers [4, -1, 2, 7, -1, 3] in that order, then example.lastIndex(-1) should return 4 and example.lastIndex(5) should return -1. In the text area below, write the definition of the lastIndex method. (In other words, write the code that should replace the //TODO comment.) Your code cannot call any methods. public class LinkedIntList { private class Node { private int item; private Node next; public Node() {} public Node(int number, Node nextNode) { item = number; next = nextNode; } } private Node first; // first node of the list public LinkedIntList() { first = null;…Trying this again since part of my question keeps disappearing Given main() in the ShoppingList class, define an insertAtEnd() method in the ItemNode class that adds an element to the end of a linked list. DO NOT print the dummy head node. Ex. if the input is: 4 Kale Lettuce Carrots Peanuts where 4 is the number of items to be inserted; Kale, Lettuce, Carrots, Peanuts are the names of the items to be added at the end of the list. The output is: Kale Lettuce Carrots Peanuts public class ItemNode { private String item; private ItemNode nextNodeRef; // Reference to the next node public ItemNode() { item = ""; nextNodeRef = null; } // Constructor public ItemNode(String itemInit) { this.item = itemInit; this.nextNodeRef = null; } // Constructor…