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import { getEndOfList } from "../merge-in-between-linked-lists/get_end_of_list.ts";import { get_deep_next_of_list } from "../reverse-linked-list-ii/get_deep_next_of_list.ts";import reverse_Linked_List from "../reverse-linked-list/index.ts";import { ListNode } from "../reverse-linked-list/ListNode.ts";
import { greater_equal_length_of_list } from "./greater_equal_length_of_list.ts";
function reverseKGroup(head: ListNode | null, k: number): ListNode | null {    if (k <= 1) return head;    if (!head) return null;    if (greater_equal_length_of_list(head, k)) {        const res = new ListNode(0, head);        const end = get_deep_next_of_list(head, k - 1);
        const next = end.next;
        end.next = null;        res.next = reverse_Linked_List(head);        if (res.next) {            getEndOfList(res.next).next = reverseKGroup(next, k);        }        return res.next;    } else {        return head;    }}export default reverseKGroup;