Linked Lists - Push & BuildOneTwoThree

#Linked Lists - Push & BuildOneTwoThree

#Write push() and buildOneTwoThree() functions to easily update and initialize linked lists. Try to use the push() function within your buildOneTwoThree() function.

Here's an example of push() usage:
function Node(data) {
  this.data = data;
  this.next = null;
}

  function push(head, data) {
    const node = new Node(data)
    node.next = head
    return node
  }
  
  function buildOneTwoThree() {
    let list = null
    list = push(list, 3)
    list = push(list, 2)
    list = push(list, 1)
    return list
  }