from dotenv import find_dotenv, load_dotenv
load_dotenv(find_dotenv())
from pprint import pprint
import pandas as pd
from langchain_core.output_parsers import JsonOutputParser
public class Program {
public static void main(String[] args) {
DoublyLinkedList list = new DoublyLinkedList();
list.insert_at_end(30);
list.insert_at_end(20);