custom queue with add

import java.util.Scanner;

public class Main {

    static class Node {
        int data;
        Node next;
        Node prev;

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

    static class CustomQueue {
        Node head, tail;

        public CustomQueue() {
            head = null;
            tail = null;
        }

        void enqueue(int x) {
            Node newNode = new Node(x);

            if (tail == null) {
                head = tail = newNode;
                return;
            }

            tail.next = newNode;
            newNode.prev = tail;
            tail = newNode;
        }

        int dequeue() {
            if (head == null) {
                return Integer.MIN_VALUE;
            }

            Node temp = head;
            head = head.next;

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

            return temp.data;
        }

        boolean isEmpty() {
            return head == null;
        }
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int N = scanner.nextInt();
        int searchElement = scanner.nextInt();
        int position = findPosition(N, searchElement);
        if (position == -1) {
            System.out.println("Element not found");
        } else {
            System.out.println("Element found at position " + position);
        }
    }

    public static int findPosition(int N, int searchElement) {
        CustomQueue queue = new CustomQueue();
        queue.enqueue(N);
        int index = 1;
        while (!queue.isEmpty()) {
            int element = queue.dequeue();
            if (element == searchElement) {
                return index;
            }
            index++;
            queue.enqueue(element + 1);
            queue.enqueue(element * 2);
        }
        return -1;
    }
}