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import { ListNode } from "../reverse-linked-list/ListNode.ts";
function swapNodes(head: ListNode | null, k: number): ListNode | null {    if (!head) return null;
    const nodes: Array<ListNode> = [];
    let current: ListNode | null = head;    while (current) {        nodes.push(current);        current = current.next;    }
    [nodes[k - 1].val, nodes[nodes.length - k].val] = [        nodes[nodes.length - k].val,        nodes[k - 1].val,    ];
    return head;}export default swapNodes;