public class NodeList<E> {
private static class Node<E> { //Node class
E data; //Data on a node
Node<E> next; //Point to the next node
Node(E e) {
this.data = e;
this.next = null;
}
}
private Node<E> head; //The header node of the linked list
private Node<E> last; //The tail node of a linked list
private Node<E> other = null;
private int length = 0; //Number of nodes
public NodeList() {
//The default node is empty
this.head = new Node<E>(null);
}
public NodeList(E data) {
this.head = new Node<E>(data);
this.last = head;
length++;
}
public void add(E data) {
if (isEmpty()) {
head = new Node<E>(data);
last = head;
length++;
} else {
Node<E> newNode = new Node<E>(data);
last.next = newNode;
last = newNode;
}
}
public E get(int index){
if(index<0 || index>length){
throw new IndexOutOfBoundsException(" The index of crossing the line :"+index);
}
other = head;
for(int i=0;i<index;i++){
other = other.next;
}
return other.data;
}
public boolean set(E oldValue,E newValue){
other = head;
while(other!=null){
if(other.data.equals(oldValue)){
other.data = newValue;
return true;
}
other = other.next;
}
return false;
}
public boolean add(E data, E insertData) {
other = head;
while (other != null) {
if (other.data.equals(data)) {
Node<E> newNode = new Node<E>(insertData);
Node<E> temp = other.next;
newNode.next = temp;
other.next = newNode;
length++;
return true;
}
other = other.next;
}
return false;
}
public boolean contains(E data){
other = head;
while(other!=null){
if(other.data.equals(data)){
return true;
}
other = other.next;
}
return false;
}
public boolean remove(E data){
other = head;
Node<E> temp = head; //Temporary variable to hold the previous node
while(other!=null){
if(other.data.equals(data)){
temp.next = other.next;
length--;
return true;
}
temp = other;
other = other.next;
}
return false;
}
public boolean isEmpty() {
return length == 0;
}
public void clear() {
this.head = null;
this.length = 0;
}
public void printLink() {
if(isEmpty()){
System.out.println(" An empty list ");
}else{
other = head;
while (other != null) {
System.out.print(other.data);
other = other.next;
}
System.out.println();
}
}
}