import { default } from "https://deno.land/x/masx200_leetcode_test@9.1.2/average-of-levels-in-binary-tree/index.ts";
Parameters
root: TreeNode | null
import { default } from "https://deno.land/x/masx200_leetcode_test@9.1.2/average-of-levels-in-binary-tree/index.ts";