as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
create a library of code that implements a linked list data structure.
user
// code implementing a linked list
 
class node {
  constructor(value, next = null) {
    this.value = value;
    this.next = next;
  }
}
 
class linkedlist {
  constructor() {
    this.head = null;
  }
 
  insert(value) {
    //insert code here
  }
 
  includes(value) {
    //search code here
  }
 
  //additional methods(append, insertbefore, insertafter, kthfromend)
}
assistant