linkedlist

[Jillukarthik]

/ package codechef; // don't place package name! / //represent,display,insertfirst done here import java.util.; import java.lang.; import java.io.*;

/ Name of the class has to be "Main" only if the class is public. / class Codechef { public ListNode head; public static class ListNode{ public int data; public ListNode next; public ListNode(int data){ this.data=data; this.next=null; }

}
public void display(){
    ListNode current=head;
    while(current !=null){
    System.out.println(current.data+" ");
    current=current.next;

}
    System.out.println("null");
}

public void insertfirst(int value){
    ListNode newNode=new ListNode(value);
    newNode.next=head;
    head=newNode;
}
public static void main (String[] args) throws java.lang.Exception
{
    // your code goes here
    Codechef sll=new Codechef();
//  sll.head=new ListNode(20);
//  ListNode second=new ListNode(90);
//  ListNode third=new ListNode(80);
//  sll.head.next=second;
//  second.next=third;

    sll.insertfirst(8765);
    sll.insertfirst(067);
    sll.display();
}

}