In this video, I solve LeetCode Problem 217 – Contains Duplicate using Java.
This problem is very common in coding interviews and helps in understanding
how to use HashSet for optimizing time complexity.
In this video, I explain:
- Problem statement in simple terms (Hindi + English)
- Brute force approach and why it is inefficient
- Optimized approach using HashSet
- Step-by-step dry run with example
- Time and space complexity analysis (interview perspective)
Problem Name: Contains Duplicate
LeetCode Problem No: 217
Language: Java
Explanation Language: Hindi + English (Hinglish)
I am documenting my DSA journey through videos to improve my
problem-solving skills and interview explanations.
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