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import { ListNode } from "../reverse-linked-list/ListNode.ts";
export default function removeNthFromEnd(    head: ListNode | null,    n: number,): ListNode | null {    if (!head) return head;    const nodes: ListNode[] = [];
    let cur: ListNode | null = head;    while (cur) {        nodes.push(cur);        cur = cur.next;    }
    if (nodes.length < n) {        return null;    }
    if (nodes.length === n) {        return nodes[1] || null;    }    if (nodes.length > n) {        const pre = nodes[nodes.length - n - 1];        const succ = nodes[nodes.length - n + 1];
        if (pre) {            pre.next = succ || null;        }    }    return head;}