LeetCode 76 - Minimum Window Substring | Java Solution (Hard)

Описание: In this video, I solve LeetCode 76 — Minimum Window Substring using Java. This is one of the most popular sliding window problems asked in technical interviews.

I explain the problem step-by-step and implement the optimized sliding window approach using two pointers and a HashMap to track character frequencies.

What you’ll learn

How to use the sliding window technique efficiently

Handling frequency counts using HashMap

Expanding and contracting window logic

Optimizing for minimum substring length

Time and space complexity analysis