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import { ListNode } from "../reverse-linked-list/ListNode.ts";import { ListNodeToArray } from "../reverse-linked-list/ListNodeToArray.ts";
export default function isPalindrome(head: ListNode | null): boolean {    if (!head) return true;    if (head.next === null) {        return true;    }
    const vals = ListNodeToArray(head);
    const half = Math.floor(vals.length / 2);    for (let i = 0; i <= half; i++) {        if (vals[i] !== vals[vals.length - 1 - i]) return false;    }    return true;}