import { default } from "https://deno.land/x/masx200_leetcode_test@10.6.3/design-underground-system/index.ts";
Methods
checkIn(): void
id: number,
stationName: string,
t: number,
checkOut(): void
id: number,
stationName: string,
t: number,
getAverageTime(startStation: string, endStation: string): number