import java.util.*; class Collection_iterators { public static void main(String args[]) { LinkedList list = new LinkedList(); list.add(new Integer(2)); list.add(new Integer(8)); list.add(new Integer(5)); list.add(new Integer(1)); Iterator i = list.iterator(); Collections.reverse(list); Collections.sort(list); while(i.hasNext()) System.out.print(i.next() + " "); }
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- Starter code for ShoppingList.java import java.util.*;import java.util.LinkedList; public class ShoppingList{ public static void main(String[] args) { Scanner scnr=new Scanner(System.in); LinkedList<ListItem>shoppingList=new LinkedList<ListItem>();//declare LinkedList String item; int i=0,n=0;//declare variables item=scnr.nextLine();//get input from user while(item.equals("-1")!=true)//get inputuntil user not enter -1 { shoppingList.add(new ListItem(item));//add into shoppingList LinkedList n++;//increment n item=scnr.nextLine();//get item from user } for(i=0;i<n;i++) { shoppingList.get(i).printNodeData();//call printNodeData()for each object } }} class ListItem{ String item; //constructor ListItem(String item) { this.item=item; } void printNodeData() { System.out.println(item); }}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.the Linked List class:import java.util.NoSuchElementException;// Linked list implementationclass LList<E> implements List<E> {private Link<E> head; // Pointer to list headerprivate Link<E> tail; // Pointer to last element private Link<E> curr; // Access to current element private int listSize; // Size of list // Constructors LList(int size) { // Constructor -- Ignore size this(); } LList() { clear(); } // Remove all elements public void clear() { curr = tail = new Link<E>(null); // Create trailer head = new Link<E>(tail); // Create header listSize = 0; } // Insert "it" at current position public boolean insert(E it) { curr.setNext(new Link<E>(curr.element(), curr.next())); curr.setElement(it); if (tail == curr) { tail = curr.next(); // New tail } listSize++;…
- 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; }package Linked_List; public class RefUnsortedList<T> implements ListInterface<T>{protected int numElements; // number of elements in this listprotected LLNode<T> currentPos; // current position for iteration// set by find methodprotected boolean found; // true if element found, else falseprotected LLNode<T> location; // node containing element, if foundprotected LLNode<T> previous; // node preceeding locationprotected LLNode<T> list; // first node on the listpublic RefUnsortedList(){numElements = 0;list = null;currentPos = null;}public void add(T element)// Adds element to this list.{LLNode<T> newNode = new LLNode<T>(element);newNode.setLink(list);list = newNode;numElements++;}protected void find(T target)// Searches list for an occurence of an element e such that// e.equals(target). If successful, sets instance variables// found to true, location to node containing e, and previous// to the node that links to location. If not successful,…//main.cpp #include "linkedListType.h"int main(){Node* head = NULL;orderedLinkedList oll = orderedLinkedList(head); oll.insert(40);oll.insert(100);oll.insert(50); oll.printList(); oll.insert(50);oll.printList(); return 0;} //linkedListType.h #include <stdio.h>#include <iostream>using namespace std; class Node{public:int data;Node* next;}; class orderedLinkedList {Node* head; public:orderedLinkedList(Node* h) {head = h;} void insert(int new_data){Node* head_ref = head; while (head_ref != NULL && (head_ref->next != NULL) && (head_ref->next)->data < new_data){cout << head_ref->data << "\n";head_ref = head_ref->next;} if (head_ref != NULL && (head_ref->next != NULL) && (head_ref->next)->data == new_data){cout << "ERROR: Item to be inserted is already in the list\n";return;} /* Insert new node */Node* new_node = new Node();new_node->data = new_data;if (head_ref != NULL) {new_node->next =…
- package DataStructures; import ADTs.StackADT;import Exceptions.EmptyCollectionException; /**** @author Qiong*/public class LinkedStack<T> implements StackADT<T> { int count;SinglyLinkedNode<T> top;public LinkedStack(){top = null;count = 0;}public LinkedStack(T data){top = new SinglyLinkedNode(data);count = 1;}@Overridepublic void push(T element) {// TODO implete the push method// The push method will insert a node with holds the given input into the top of the stack } @Overridepublic T pop() throws EmptyCollectionException {if (this.isEmpty()) throw new EmptyCollectionException();SinglyLinkedNode<T> node = top;top = top.getNext();count--;node.setNext(null);return node.getElement();} @Overridepublic T peek() throws EmptyCollectionException {//TODO: Implement this method//This should look like pop, except we aren�t changing the stack at all. Just returning the element. } @Overridepublic boolean isEmpty() {if (count == 0) {return true;}return false;}…package Linked_List; public class RefUnsortedList<T> implements ListInterface<T> {protected int numElements; // number of elements in this listprotected LLNode<T> currentPos; // current position for iteration// set by find methodprotected boolean found; // true if element found, else falseprotected LLNode<T> location; // node containing element, if foundprotected LLNode<T> previous; // node preceeding locationprotected LLNode<T> list; // first node on the listpublic RefUnsortedList(){numElements = 0;list = null;currentPos = null;}public void add(T element)// Adds element to this list.{LLNode<T> newNode = new LLNode<T>(element);newNode.setLink(list);list = newNode;numElements++;}protected void find(T target)// Searches list for an occurence of an element e such that// e.equals(target). If successful, sets instance variables// found to true, location to node containing e, and previous// to the node that links to location. If not successful,…class LinkedList; A7 A template class ListNode { friend class LinkedList; private: I val; ListNode *next; public: ListNode () : next(nullptr) {} ListNode(T val) : val(val), next(nullptr) {} }; template class LinkedList : public List { private: ListNode *head; // this implementation has a dummy head (sentry head node) size_t num_of_element; public: LinkedList () { head = new ListNode); num_of_element = 0; LinkedList(size_t capacity) : LinkedList() {} // to make test consistent // copy constructor • LinkedList (const LinkedList &other_list) : LinkedList() { // destructor
- Simple linkedlist implementation please help (looks like a lot but actually isnt, everything is already set up for you below to make it EVEN easier) help in any part you can be clear Given an interface for LinkedList- Without using the java collections interface (ie do not import java.util.List,LinkedList, Stack, Queue...)- Create an implementation of LinkedList interface provided- For the implementation create a tester to verify the implementation of thatdata structure performs as expected Build Bus Route – Linked List- You’ll be provided a java package containing an interface, data structure,implementation shell, test harness shell below.- Your task is to:o Implement the LinkedList interface (fill out the implementation shell)o Put your implementation through its paces by exercising each of themethods in the test harnesso Create a client (a class with a main) ‘BusClient’ which builds a busroute by performing the following operations on your linked list:o§ Create (insert) 4 stations§…public class Test{ public static void main (String [] args){ LinkedList list = new LinkedList (); list.add (300); list.add (100); list.add (200); System.out.println(list.removeFirst ()); } What is the output?Please fill in all the code gaps if possible: (java) public class LinkedList { privateLinkedListNode head; **Creates a new instance of LinkedList** public LinkedList () { } public LinkedListNode getHead() public void setHead (LinkedListNode head) **Add item at the front of the linked list** public void insertFront (Object item) **Remove item at the front of linked list and return the object variable** public Object removeFront() }