FAANG’s Favorite Question? | Longest Substring Without Repeating Characters – Leetcode 3

📌 Leetcode 3 – Longest Substring Without Repeating Characters
📄 Video Description:
In this video, we tackle Leetcode 3 – Longest Substring Without Repeating Characters, a popular Amazon, Google, and Microsoft interview question. Using the sliding window + hashmap approach, we optimize our solution to run in linear time O(n).

👨‍💻 What You'll Learn:
How to use the sliding window technique effectively.

Tracking characters and their indices using a hashmap.

Step-by-step code walkthrough with explanations.

How to handle edge cases like repeated characters and empty strings.

🧠 Time & Space Complexity:
Time: O(n) – Each character is visited once.

Space: O(n) – HashMap stores characters in the window.

🔗 Problem Link:
Leetcode 3 – Longest Substring Without Repeating Characters

📌 Tags:
#leetcodecoding #slidingwindows #amazoninterviewpreparation #longestcommonprefix #codinginterviewprep #python

Видео FAANG’s Favorite Question? | Longest Substring Without Repeating Characters – Leetcode 3 канала LazyCoder