🔥 Day 25/90 | Line Sweep Algorithm + TreeMap Theory + Lab Made Easy| DSA Pattern You Must Know!

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In this video, we deep dive into the My Calendar II problem and break it down step by step, starting from the brute force approach and gradually moving to optimized solutions using TreeMap and the Line Sweep Algorithm.

📌 What you’ll learn in this video:

How the brute force approach works and why it fails for large inputs

Using TreeMap to efficiently track overlapping bookings

Understanding the Line Sweep Algorithm with intuition, diagrams, and real examples

A simple sample problem to clearly understand how line sweep works before applying it to My Calendar II

How to prevent triple bookings while allowing double bookings

Time and space complexity analysis of each approach

🧠 Why this problem is important:

Frequently asked in FAANG interviews

Tests understanding of intervals, event counting, and ordered maps

Helps you master a powerful pattern used in calendar scheduling, meeting rooms, and interval problems

🎯 Who should watch this video?

Students preparing for coding interviews

Anyone learning TreeMap internals

Developers wanting to understand line sweep algorithms from scratch

DSA learners following the Babua DSA Patterns Course

🔥 By the end of this video, you’ll have a clear mental model of how the Line Sweep Algorithm works and how to apply it confidently in interview problems.

👉 Don’t forget to like, comment, and subscribe for more structured DSA explanations in Babua style 🚀

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CHAPTERS
00:00 - Introduction
03:18 - LeetCode 731 - Approach 1 - Theory
22:30 - LeetCode 731 - Approach 1 - Code
43:00 - Line Sweep Algorithm Intuition
55:00 - TreeMap Theory
01:10:32 - TreeMap Lab
01:27:00 - TreeMap in Line Sweep Algorithm
01:32:00 - Line Sweep Algorithm Steps
01:35:13 - Line Sweep Algorithm Walkthrough
01:40:10 - Conclusion

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Видео 🔥 Day 25/90 | Line Sweep Algorithm + TreeMap Theory + Lab Made Easy| DSA Pattern You Must Know! канала CTO Bhaiya