Contains Duplicate - Leetcode 217 | Hashing | Python - Beginner Friendly Explanation

Easy and Beginner Friendly Explanation with 3 approaches and Time and Space Complexity Analysis! ⚡

📌 Related Resources (Next in Series):
🔗 Contains Duplicate II :👉 https://youtu.be/tgE_QkqSeNI
🔗 Contains Duplicate III :👉 https://youtu.be/HVh6u2Rf4P4

Leetcode 217. Contains Duplicate
🔗 Problem Link: https://leetcode.com/problems/contains-duplicate/
✅ Solution Page Link: https://dkodetree.com/solutions/contains-duplicate
💻 Code on Github: https://github.com/dkodetree/leetcode-solutions/blob/main/0217-contains-duplicate/hashset/python/solution.py

📌 Timestamps
00:00 - Introduction
00:35 - Brute-force Approach
01:52 - Sorting Approach
03:49 - Hashing Approach (Optimal)
05:43 - Python Code (Hashing)
07:02 - Bonus One-Liner in Python

📌 Quick Links:
🔹 Practice Series Solutions:
https://dkodetree.com/practice/series-solutions
🔹 DKodeTree Roots 25 – Foundation Problems:
https://dkodetree.com/practice/dkodetree-roots-25
🔹 Explore more:
https://dkodetree.com – Simplifying LeetCoding for beginners!

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#interviewpreparation
#hashing

Видео Contains Duplicate - Leetcode 217 | Hashing | Python - Beginner Friendly Explanation канала DKodeTree