Day 15: Linked List

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source: https://www.hackerrank.com/challenges/30-linked-list?h_r=next-challenge&h_v=zen

import java.io.*;
import java.util.*;

class Node {
   int data;
   Node next;
   Node(int d) {
        data = d;
        next = null;
    }
}

class Solution {

    public static Node insert(Node head,int data) {
        //Complete this method
        if(null == head){
            head = new Node(data);
            return head;
        }
        Node temp = head;
        while(temp.next != null){
            temp = temp.next;
        }
        temp.next = new Node(data);
        return head;
    }

    public static void display(Node head) {
        Node start = head;
        while(start != null) {
            System.out.print(start.data + " ");
            start = start.next;
        }
    }

    public static void main(String args[]) {
        Scanner sc = new Scanner(System.in);
        Node head = null;
        int N = sc.nextInt();

        while(N-- > 0) {
            int ele = sc.nextInt();
            head = insert(head,ele);
        }
        display(head);
        sc.close();
    }
}

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