Java Interview Coding Question | Longest Substring Explained Step-by-Step | Longest Substring Java

In this video, I explained how to solve the "Longest Substring Without Repeating Characters" problem using the Sliding Window Technique in Java.

Topics Covered:
✔ Understanding the problem statement
✔ Sliding Window concept
✔ HashSet usage
✔ Step-by-step dry run
✔ Time Complexity and Space Complexity
✔ Java code explanation

Problem Example:
Input: "abcabcbb"
Output: 3

Concepts Used:
- Sliding Window
- Two Pointers
- HashSet
- String Manipulation

This is one of the most important coding interview questions frequently asked in companies like Google, Amazon, Microsoft, and Meta.

#Java #LeetCode #DSA #SlidingWindow #CodingInterview #JavaProgramming #Algorithms

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