1948. Delete Duplicate Folders in System | Leetcode Daily - Python
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In this detailed LeetCode tutorial, we're breaking down problem 1948, "Delete Duplicate Folders in System". This problem combines Tries, tree traversal, and string manipulation in a unique way. We'll start by building a Trie from the input file paths. The core of our solution lies in a clever technique called subtree serialization, where we use a post-order DFS traversal to generate a unique string "fingerprint" for each folder's structure. By counting these fingerprints, we can easily identify and mark duplicate structures for deletion. Finally, we'll walk through the code to prune the Trie and construct the final result. This is a must-watch for anyone looking to master complex tree algorithms.
Perfect for coding interview preparation and improving problem-solving skills.
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Solution Link:
https://leetcode.com/problems/delete-...
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