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Java program to create a Circular Linked List of n nodes and display it in reverse order

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Java program to create a Circular Linked List of n nodes and display it in reverse order

In this example, we will create a java program of circular linked list, then traverse the list in the reverse order and print the nodes.

Program:


public class Main {  
public class Node{  
int data;  
Node next;  
public Node(int data) {  
this.data = data;  
}  
}  

public Node head = null;  
public Node tail = null;  

public void add(int data){  
Node newNode = new Node(data);  
if(head == null) {  
head = newNode;  
tail = newNode;  
newNode.next = head;  
}  
else {  
tail.next = newNode;  
tail = newNode;  
tail.next = head;  
}  
}  

public void display() {  
Node current = head;  
if(head == null) {  
System.out.println("List is empty");  
}  
else {  
do{  
System.out.print(" "+ current.data);  
current = current.next;  
}while(current != head);  
System.out.println();  
}  
}  

public void reverse(Node current) {  
if(current.next == head) {  
System.out.print(" "+current.data);  
return;  
}  
reverse(current.next);  
System.out.print(" "+current.data);  
}  

public static void main(String[] args) {  
Main cl = new Main();  
cl.add(1);  
cl.add(2);  
cl.add(3);  
cl.add(4);  
cl.add(5);  
cl.add(6);  
System.out.println("Original List: ");  
cl.display();  
System.out.println("Reversed List: ");  
cl.reverse(cl.head);  
}  
}

Output:-
Original List:
1 2 3 4 5 6
Reversed List:
6 5 4 3 2 1

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