day11.js

// ./day11.js
/*
Challenge #11 - You Can't Hurry Transit

You can't hurry love, or local transit in Codeville. While you've been hard at work on a solution to the
larger transit woes, you've decided to implement a new system to at least be a little more transparent
about wait times. The city will be installing a smart screen, at the busiest bus stop in town, that will
show the estimated arrival times for each of the buses that stop there.

Instructions

For this challenge, we'll implement a function called busTimes(). This function will calculate the arrival
time for a collection of busses based on their current speed and distance from the stop. It will receive an
object called buses, which contains a series of objects for each bus, with the distance of the bus and the
speed that the bus is traveling at. Our function should return a new object that shows how long until each
bus arrives at the stop.

Examples:

INPUT:
const buses = {
  pickadilly: {
      distance: 10,
      speed: 5
  },
  uptown: {
      distance: 13,
      speed: 10
  }
}

OUTPUT:
{
  pickadilly: 2,
  uptown: 1.3
}
*/

const busTimes = (buses) => {
  const busRoutes = Object.keys(buses);
  const arrivalTimes = {}

  busRoutes.forEach(route => {
    arrivalTimes[route] = buses[route].distance / buses[route].speed;
  });

  return arrivalTimes;
};

// EXAMPLE:
const buses = {
  pickadilly: {
      distance: 10,
      speed: 5
  },
  uptown: {
      distance: 13,
      speed: 10
  }
};

console.log(busTimes(buses));