Delete Nodes From Linked List Present in Array

import { ListNode } from '@algorithm/lib';
 
export function modifiedList(nums: number[], head: ListNode | null): ListNode | null {
  const set = new Set(nums);
  const startNode = new ListNode(-1);
 
  let prevNode = startNode;
  let currentNode = head;
  while (currentNode !== null) {
    if (!set.has(currentNode.val)) {
      prevNode.next = currentNode;
      prevNode = prevNode.next;
    }
    currentNode = currentNode.next;
  }
  prevNode.next = null;
  return startNode.next;
}