public static SinglyLinkedListNode reverse(SinglyLinkedListNode llist) {
        SinglyLinkedListNode reverseList = null;
        SinglyLinkedListNode current = llist;
        
        while (current != null) {
            SinglyLinkedListNode temp = new SinglyLinkedListNode(current.data);
            temp.next = reverseList;
            reverseList = temp;
            current = current.next;
        }
        
        return reverseList;
    }