DSA in Python - Longest Substring Without Repeating Characters | Leetcode 3 - Part 94 [Hindi]

Описание: 🚀 Welcome to Part 94 of Code & Debug’s DSA in Python Course!

In this lecture, we solve Leetcode 3: Longest Substring Without Repeating Characters, a classic sliding window + hashing problem. We explore both brute force and optimal solutions.

📚 What you’ll learn in this video:
✅ Understanding the problem statement and real-world analogy
✅ Brute force approach using nested loops
✅ Optimal sliding window technique using a set or hashmap
✅ Maintaining a window of non-repeating characters
✅ Time & space complexity comparison of both solutions

💡 Why is this important?
This problem is commonly asked in FAANG interviews and helps in mastering sliding window techniques, character tracking, and window shrink/expand logic, which are foundational for many string and array problems.

👉 Practice the problem on Leetcode:
🔗 https://leetcode.com/problems/longest...

👉 Refer to the article for better understanding:
https://codeanddebug.in/blog/longest-...

👉 📄 Access the full YouTube DSA Playlist Sheet (All Questions in Order):
🔗 https://docs.google.com/spreadsheets/...

👉 Enroll in the free DSA Python course here:
https://codeanddebug.in/course/master...

👉 Enroll for Self-Paced Advance DSA course here:
https://codeanddebug.in/course/zero-t...

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