Solve LeetCode 3: Longest Substring Without Repeating Characters using Java with a clean and efficient Sliding Window approach.
In this video, I break down the problem step-by-step, explain how to avoid common pitfalls, and walk you through an optimal Java solution that runs in O(n) time.
Whether you're preparing for FAANG interviews, brushing up on sliding window techniques, or building your Java coding interview skills, this tutorial will help you understand and implement the solution with ease.
📌 What You’ll Learn
How to solve LeetCode 3 using Java
Sliding window algorithm explained visually
Optimal O(n) Java solution
Common mistakes and how to avoid them
How this pattern applies to other interview problems
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