_init__(self, items: list) -> None: self._first = None for item in items: self.append(ite
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What does self.append(item) append to? Does it append to the linkedList? But when I run this it shows AttributeError: 'LinkedList' object has no attribute 'append'
class LinkedList:
def __init__(self, items: list) -> None:
self._first = None
for item in items:
self.append(item)
Step by step
Solved in 2 steps
- True or False? A collection allows retrieval of information based on the size of the information. True or False? If N represents the number of elements in the collection, then the contains method of the LinkedCollection class is O(log2N).Start this lab with the code listed below. The LinkedList class defines the rudiments of the code needed to build a linked list of Nodes. Complete the code for the removeFirst method, which should remove and return the first element in the linked list. Throw a NoSuchElementException if the method is invoked on an empty list. Use the LinkedListRunner class’s main method to test your code. import java.util.NoSuchElementException;public class LinkedList{ private Node first; public LinkedList() { first = null; } public Object getFirst() { if (first == null) { throw new NoSuchElementException(); } return first.data; } public void addFirst(Object element) { Node aNode = new Node(); aNode.data = element; aNode.next = first; first = aNode; } public Object removeFirst() { // put your code here } public String toString() { String temp = ""; Node current = first; while (current != null) { temp =…My code does not produce the required output, can anyone let me know what seems to be off? Input: from Node import Node from LinkedList import LinkedList def print_linkedlist(list): print(f'Linked List ------ Nodes ----------------------------------') print(f'head: {list.head.name:<6}', end=' ') node = list.head while node != None: print(f"{node.name:<12}", end=' ') node = node.next print() print(f'tail: {list.tail.name:<6}', end=' ') node = list.head while node != None: print(f"data:{node.data:<7}", end=' ') node = node.next print() print(f' ', end=' ') node = list.head while node != None: if node.next != None: print(f"next:{node.next.name:<7}", end=' ') else: print("next:None") node = node.next print() print(f' ', end=' ') node = list.tail while node != None: if node.prev != None:…
- My code does not produce the required output, can anyone let me know what seems to be off? Input: from Node import Node from LinkedList import LinkedList def print_linkedlist(list): print(f'Linked List ------ Nodes ----------------------------------') print(f'head: {list.head.name:<6}', end=' ') node = list.head while node != None: print(f"{node.name:<12}", end=' ') node = node.next print() print(f'tail: {list.tail.name:<6}', end=' ') node = list.head while node != None: print(f"data:{node.data:<7}", end=' ') node = node.next print() print(f' ', end=' ') node = list.head while node != None: if node.next != None: print(f"next:{node.next.name:<7}", end=' ') else: print("next:None") node = node.next print() print(f' ', end=' ') node = list.tail while node != None: if node.prev != None:…Explain why the code below does not run when using the test driver shown in screen shot. i also included the LLNode class and collectioninterface interface public class LinkedCollection<T> implements CollectionInterface<T> { protected LLNode<T> head; // head of the linked list protected int numElements = 0; // number of elements in this collection // set by find method protected boolean found; // true if target found, else false protected LLNode<T> location; // node containing target, if found protected LLNode<T> previous; // node preceding location public LinkedCollection() { numElements = 0; head = null; } public boolean add(T element) // Adds element to this collection. { LLNode<T> newNode = new LLNode<>(element); newNode.setLink(head); head = newNode; numElements++; return true; } protected void find(T target) // Searches the collection for an…Considering, template <typename T>LinkedList<T>::~LinkedList() noexcept{head = nullptr;} are there any circumstances in which you wouldn't expect all of the nodes to be destroyed properly?
- For this assignment I want you to create a linked list that can store generics. This work NEED JAVA FILE, it is one java program. You will need to complete the following files: insertEnd - This method is like insertFront except the item goes at the end of the list, not the beginning removeLast - This method is like the remove method, except it removes that last occurrence of the item removeAll - This method remove all items that match the provided item previous - The method returns the node in front of the item findAndMoveToFront - The method returns the first node containing the item, but as a side effect it also moves that node to the first of the list. This potentially makes future searches faster. This is called the move to front search heuristic.make a LinkedList where you have to make a class and then this class have two members first one would be the value of type int and the second one would be the address of the Node and the type of this address should be the same as class. Secondly, you have to insert Nodes in the LinkedList which would be empty in the beginning and then his list will be filled up by user during run time. NOTE: You can’t make a LinkedList during compiled time you have to make a LinkedList during Run time on the demand of user, Suppose user will first ask you that how many nodes he wants to insert into the LinkedList.Please use Java Write a method “removeHighestLinkedList” that takes a LinkedList and removes the highest value.
- 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 = 4Create an LinkedList object and store 5 different Integer objects.JAVA CODE NEEDED THANK YOU. i have 1hour and 3minutes from now. A bill is characterized by number(unique), date, sum, issuer. In main method add 3 bills to a LinkedList, then add them to a HashSet (duplicate bills should be removed automatically) then add them to a TreeSet. Implement class Bill (with all required methods!) and main method. Implement a BillRepository class that manages a collection of bills. Class should have methods for adding new bills, getting a bill (or a bill collection) by number, date, sum or issuer. Implement a method that returns a bill/ bill collection based on more than one field. Also implement BillRepositoryI interface that exposes the methods in BillRepository. Implement a Company thread that continuously adds bills in an AuditReport and an Auditor thread that continuously removes bills from the AuditReport and outputs randomly if the current bill is correct or not. Use producer-consumer pattern with wait/notify. Do not use explicit locks or blocking…