In this video, I explain the LeetCode "Contains Duplicate" problem step by step using Python.
This is an easy and important Data Structures & Algorithms (DSA) problem that every beginner should know. We solve it using a HashSet for optimal time complexity and discuss why this approach is efficient.
📌 Topics covered:
- Contains Duplicate LeetCode explanation
- Python HashSet solution
- Time and Space Complexity
- Beginner-friendly DSA concepts
This problem is commonly asked in coding interviews and is perfect for students preparing for:
- LeetCode
- DSA interviews
- Python coding practice
- FAANG interview prep
If you’re new to DSA or LeetCode, this tutorial will help you understand the logic clearly.
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