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Java program to create a singly linked list of n nodes and display it in reverse order

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Java program to create a singly linked list of n nodes and display it in reverse order

In this Example, we will see a java program to create a singly linked list and display the list in reverse order.

Program:


public class Main {  
class Node{  
int data;  
Node next;  

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

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

public void addNode(int data) {  
Node newNode = new Node(data);  

if(head == null) {  
head = newNode;  
tail = newNode;  
}  
else {  
tail.next = newNode;  
tail = newNode;  
}  
}  

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

public void display() {  
Node current = head;  

if(head == null) {  
System.out.println("List is empty");  
return;  
}  

while(current != null) {  
System.out.print(current.data + " ");  
current = current.next;  
}  
System.out.println();  
}  

public static void main(String[] args) {  

Main sList = new Main();  

sList.addNode(1);  
sList.addNode(2);  
sList.addNode(3);  
sList.addNode(4);  

System.out.println("Original List: ");  
sList.display();  

System.out.println("Reversed List: ");  
sList.reverse(sList.head);  
}  
}

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

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