Consider a non-empty linked list of type 'node' where 'head is the reference to the first node and 'next refers to the next node in the list. What does the following code do? Public void method({ node temp =new node(); node cur=head; while(cur.nextl=null){ cur=cur.next; cur.next=temp; temp.next=null; } Inserting a node at the end of the list
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- 1- A new static method with one parameter which is a head node for a linked list of integers, the method should create a new linked list which is equivalent to the original list of integers but with all repetitions removed, the method's return value is a head reference for the new list. this is what I have but it's not removing repetitions. public static IntLinkedBag removeRepetition (IntLinkedBag b1) { IntNode next; IntNode head = null; LinkedList<Integer> s = new LinkedList<>(); IntNode new_list = new IntNode(0, null); IntNode now = head; IntNode prev = new_list; while (now!= null) { int x = now.data; if (s.contains(x)) { new_list = new_list.next; } else { s.add(x); new_list.next = new IntNode(x, now); new_list = new_list.next; } now = now.next; } return b1; } }…Problem Description: Q1) Write a method public static void downsize (LinkedList employeeNames, int n) that removes every nth employee from a linked list. Q2) Write a method public static void reverse (LinkedList strings) that reverses the entries in a linked list.6. Suppose that we have defined a singly linked list class that contains a list of unique integers in ascending order. Create a method that merges the integers into a new list. Note the additional requirements listed below. Notes: ● . Neither this list nor other list should change. The input lists will contain id's in sorted order. However, they may contain duplicate values. For example, other list might contain id's . You should not create duplicate id's in the list. Important: this list may contain duplicate id's, and other list may also contain duplicate id's. You must ensure that the resulting list does not contain duplicates, even if the input lists do contain duplicates.
- java program : Assume that the following method is added to the class KWLinkedList. What is the functionality of the following method? public E function() { Node<E> temp = tail; tail.prev.next = null; tail = temp.prev; size--; return temp.data; } Return the second last element of the list but do not remove it. Return the second last element of the list and remove it from the list. Return the element at the tail of the list and remove it from the list. Return the element at the tail of the list but do not remove it.using namespace std; class SinglyLinkedListNode { // INSERT YOUR CODE HERE }; class SinglyLinkedList { public: SinglyLinkedListNode *head; SinglyLinkedListNode *tail; SinglyLinkedList() { this->head = nullptr; this->tail = nullptr; } voidinsert_node(intnode_data) { // INSERT YOUR CODE HERE } }; void free_singly_linked_list(SinglyLinkedListNode* node) { // INSERT YOUR CODE HERE } // Complete the has_cycle function below. /* * For your reference: * * SinglyLinkedListNode { * int data; * SinglyLinkedListNode* next; * }; * */ bool has_cycle(SinglyLinkedListNode* head) { SinglyLinkedListNode* temp = head; bool isCycle = false; while (temp != nullptr) { // INSERT YOUR CODE HERE } } int main() { // INSERT YOUR CODE HERE TO TEST YOUR CODE return0; }Given the IntNode class, define the getCount() method in the CustomLinkedList class that returns the number of items in the list not including the head node. Ex: If the list contains: head -> 14 -> 19 -> 4 getCount(headObj) returns 3. Ex: If the list contains: head -> getCount(headObj) returns 0. public class IntNode { private int dataVal; // Node data private IntNode nextNodePtr; // Reference to the next node // Default constructor public IntNode() { dataVal = 0; nextNodePtr = null; } // Constructor public IntNode(int dataInit) { this.dataVal = dataInit; this.nextNodePtr = null; } // Constructor public IntNode(int dataInit, IntNode nextLoc) { this.dataVal = dataInit; this.nextNodePtr = nextLoc; } /* Insert node after this node. Before: this -- next After: this -- node -- next */ public void insertAfter(IntNode nodeLoc) { IntNode tmpNext; tmpNext = this.nextNodePtr;…
- C# Assume you have a LinkedList of Node objects. Both classes have all the normal operations shown below. Your job is to program the DeleteTail method of the LinkedList class. This method locates and deletes the last element of the linked list. You may not change its signature line. Keep your code clean, but no documentation is necessary. A good solution will be between 5 and 10 lines of code, not counting whitespace.Java - Write a non-member method for a "enqueue" that utilizes a doubly linked list. There are three variables available (can be sent) to the method; a “front” reference, a “rear” reference, and a data element (string) (you decide what you need). Empty case is when front and rear are NULL. The node is defined as follows: class node{ node after; node before string data }java program java method: Write a method replace to be included in the class KWLinkedList (for doubly linked list) that accepts two parameters, searchItem and repItem of type E. The method searches for searchItem in the doubly linked list, if found then replace it with repItem and return true. If the searchItem is not found in the doubly linked list, then insert repItem at the end of the linked list and return false. Assume that the list is not empty. You can use ListIterator and its methods to search the searchItem in the list and replace it with repItem if found. Do not call any method of class KWLinkedList to add a new node at the end of the list. Method Heading: public boolean replace(E searchItem, E repItem) Example: searchItem: 15 repItem: 17 List (before method call): 9 10 15 20 4 5 6 List (after method call) : 9 10 17 20 4 5 6
- package hw5; public class LinkedIntSet {private static class Node {private int data;private Node next; public Node(int data, Node next) {this.data = data;this.next = next;}} private Node first; // Always points to the first node of the list.// THE LIST IS ALWAYS IN SORTED ORDER!private int size; // Always equal to the number of elements in the set. /*** Construts an empty set.*/public LinkedIntSet() {throw new RuntimeException("Not implemented");} /*** Returns the number of elements in the set.* * @return the number of elements in the set.*/public int size() {throw new RuntimeException("Not implemented");} /*** Tests if the set contains a number* * @param i the number to check* @return <code>true</code> if the number is in the set and <code>false</code>* otherwise.*/public boolean contains(int i) {throw new RuntimeException("Not implemented");} /*** Adds <code>element</code> to this set if it is not already present and* returns…Please code in C language. Please use the starter code to help you solve the deleted node and the reverse list. Here is the starter code: #include <stdio.h> #include <ctype.h> #include <stdlib.h> #include <string.h> #include "linkedlist.h" // print an error message by an error number, and return // the function does not exit from the program // the function does not return a value void error_message(enum ErrorNumber errno) { char *messages[] = { "OK", "Memory allocaton failed.", "Deleting a node is not supported.", "The number is not on the list.", "Sorting is not supported.", "Reversing is not supported.", "Token is too long.", "A number should be specified after character d, a, or p.", "Token is not recognized.", "Invalid error number."}; if (errno < 0 || errno > ERR_END) errno = ERR_END; printf("linkedlist: %s\n", messages[errno]); } node *new_node(int v) { node *p =…Question 3 1 Point Assume the following method is within the KWLinkedList class, what does the following method do? public boolean undefined( ) { Listiterator iter1 = iterator( ); Listlterator iter2 = iterator(size - 1); if (Iter1.hasNext() && iter2.hasPrevious()) iff iter1.next().equals (iter2.previous()) return true; else return false; If the first element of the list is same as the last element of the list, then the method will return true else it will return false. B If the first two elements of the list are equal, then the method will return true, else it will return false. If the last two elements of the list are equal, then the method will return true, else it will return false. If the list is same in the forward and reverse direction, then the method will return true, else it will return false.