$ git clone [email protected]:colinshum/limebike-coding-challenge.git
$ cd limebike-coding-challenge
$ javac *.java
$ java ItemCounter

Below is a sample Ride object from ItemCounter() which can be modified to store different time intervals and items within the object.

Ride testRide = new Ride(
    timeFormat.parse("07:00"),
    timeFormat.parse("07:30"),
    new Basket(new HashMap<String, Integer>() {
    {
        put("apple", 2);
        put("brownie", 1);
    }
}));

A Ride can be processed using process_ride(testRide) and all processed rides can be printed using printItemsPerInterval() found in the ItemCounter class.

Modern Java practices were used, such as the Comparator.comparing() method to sort an ArrayList.

This solution uses 4 classes to complete the exercise:

1. Basket: contains the items stored within a bike's basket, stored using a HashMap for O(1) access times.
2. Ride: contains a start/end time interval and a Basket.
3. RideLog: contains a time, a Basket and boolean indicating whether the items should be kept beyond this time interval. A single Ride will have 2 RideLog entries for the start and end periods.
4. ItemCounter: implements printing and processing feature using an ArrayList<RideLog> to quickly access and print Basket data for all processed rides.