public int findLoop(Node n)
{
    Node slow = head,fast = head;
    while(slow != null && fast != null && fast.next != null)
    {
        slow = slow.next;
        fast = fast.next.next;
        if(slow == fast)
        {
            System.out.println("Found loop");
            return 1;
        }
    }
    return 0;
}

public static void main(String[] args)
{

    Scanner sc = new Scanner(System.in);
    detectLoop dl = new detectLoop();
    System.out.println("Enter the number of elements: ");
    int n = sc.nextInt();
    System.out.println("Enter the values to be inserted: ");
    for (int i = 0; i < n; i++)
    {
        int x = sc.nextInt();
        dl.push(x);
    }
    Node n1 = dl.head;
    while(n1.next != null)
    {
        n1 = n1.next;
    }
    n1.next = dl.head;
    dl.findLoop(n1);
}