Building a Calendar Booking System with an Interval Tree in JavaScript

When it comes to managing reservations or bookings in applications, a common challenge is handling time intervals that don’t overlap. One elegant way to solve this problem is by using an Interval Tree. In this blog, we’ll explore how to build a simple Calendar Booking System using an interval tree in JavaScript.

We’ll walk through the implementation of a class that can book events based on start and end times, ensuring that no events overlap.

Photo by Waldemar on Unsplash

Problem Description

We want to design a MyCalendar class, which supports booking events in a calendar. Each event has a start and end time, and no two events should overlap. If a new event can be booked, it should return true; otherwise, return false.

For example:

• Booking an event from time 20 to 30 succeeds.
• Booking an event from time 10 to 20 succeeds.
• Booking an event from 15 to 25 fails because it overlaps with the first booking.

Why Use an Interval Tree?

An Interval Tree is ideal for managing ranges of values, making it perfect for handling events with start and end times. The tree structure allows efficient insertion and lookup, with logarithmic time…