Psst: Open the JavaScript Console and try to play around with these functions:
 const list = new SinglyLinkedList(); 
       list.push("Hello"); 
       list.pop(); 
       list.unshift("Hello"); 
       list.shift(); 
       list.get(1); 
       list.set(1, "Howdy"); 
       list.insert(1, "Ahoy"); 
       list.remove(1); 
       list.reverse(); 
       list.toArray(); 
       const doubleList = new DoublyLinkedList(); 
       doubleList.push("Hello"); 
       doubleList.pop(); 
       doubleList.unshift("Hello"); 
       doubleList.shift(); 
       doubleList.get(1); 
       doubleList.set(1, "Howdy"); 
       doubleList.insert(1, "Ahoy"); 
       doubleList.remove(1); 
       doubleList.reverse(); 
       doubleList.toArray();