Скачать или смотреть Leetcode 1233 | Remove Sub-Folders from the Filesystem | Trie | Leetcode Daily | Telugu

In this video, we solve a unique and real-world inspired problem from Leetcode where you're given a list of folder paths and need to remove all sub-folders. We’ll break it down visually and intuitively using Sorting and the Trie (Prefix Tree) data structure.

📁 Just like cleaning a messy filesystem, we untangle nested folders smartly and efficiently!

🚀 What You’ll Learn:
Why a naive O(N²) solution fails (TLE ❌)
How to sort folder paths to simplify structure
Building a Trie to detect and skip sub-folders
Applying the '/' trick to avoid false positives
Clean and optimized code walkthrough with dry run

🧩 Concepts Used:
📌 Sorting
🌳 Trie (Prefix Tree)
🔁 String Manipulation

0:00 – Introduction
3:50 – O(N^2) will give TLE
9:00 – We can apply Trie
14:10 – Why Sorting is required?
18:12 – Applying '/' trick
23:30 – Summary
25:28 – Coding the approach
42:57 – Time and Space Complexity

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