function defaultimport { default } from "https://deno.land/x/masx200_leetcode_test@v0.10.1/lian-biao-zhong-dao-shu-di-kge-jie-dian-lcof/index.ts"; default(head: ListNode | null, k: number): ListNode | nullParametershead: ListNode | nullk: numberReturnsListNode | null