Answers for "java program on Linkedlist and Iterator"

Java

implementing iterator for linked list java

public class BasicLinkedList<T> implements Iterable<T> {
    public int size;

    private class Node {
        private T data;
        private Node next;

        private Node(T data) {
            this.data = data;
            next = null;
        }
    }

    private Node head;
    private Node tail;

    public BasicLinkedList() {
        head = tail = null;
    }
//Add, remove method 

public Iterator<T> iterator() {
        return new Iterator<T>() {

            Node current = head;

            @Override
            public boolean hasNext() {
                return current != null;
            }

            @Override
            public T next() {
                if(hasNext()){
                    T data = current.data;
                    current = current.next;
                    return data;
                }
                return null;
            }

            @Override
            public void remove(){
                throw new UnsupportedOperationException("Remove not implemented.");
            }

        };

Posted by: Guest on February-23-2021

Source

java linked list iterator

// Java code to illustrate listIterator() 
import java.io.*; 
import java.util.LinkedList; 
import java.util.ListIterator; 
  
public class LinkedListDemo { 
    public static void main(String args[]) 
    { 
        // Creating an empty LinkedList 
        LinkedList<String> list = new LinkedList<String>(); 
  
        // Use add() method to add elements in the list 
        list.add("Geeks"); 
        list.add("for"); 
        list.add("Geeks"); 
        list.add("10"); 
        list.add("20"); 
  
        // Displaying the linkedlist 
        System.out.println("LinkedList:" + list); 
          
        // Setting the ListIterator at a specified position 
        ListIterator list_Iter = list.listIterator(2); 
  
        // Iterating through the created list from the position 
        System.out.println("The list is as follows:"); 
        while(list_Iter.hasNext()){ 
           System.out.println(list_Iter.next()); 
        } 
    } 
}

Posted by: Guest on January-28-2020

Code answers related to "java program on Linkedlist and Iterator"

Code answers related to "Java"

Java Answers by Framework

Browse Popular Code Answers by Language

Python

Javascript

Whatever

Shell/Bash

CSS

Html

PHP

SQL

Java

Answers for "java program on Linkedlist and Iterator"

Code answers related to "java program on Linkedlist and Iterator"

Code answers related to "Java"

Java Answers by Framework

Browse Popular Code Answers by Language

Popular Programming Languages

Advertisements

Company

Compilers

Help

Connect with us