Day 35 - Contains Duplicate | Leetcode 217 | JavaScript + Sorting Approach | DSA with DAX

⚠️ Facing TLE or confused between brute force and optimal solution for checking duplicates?
This is a must-watch if you want to master HashSet in JavaScript and understand when to use sorting vs hashing.
👀 Don't just memorize — truly understand this core Leetcode pattern that keeps repeating in interviews!
🚀 About the Series – DSA with DAX
DSA with DAX is your daily dose of smart problem-solving, explained in clear English and JavaScript.
Day 35 brings a 🔥 core array pattern – Contains Duplicate (Leetcode 217).
🎯 Stay consistent, crack the logic, and grow your DSA power daily!
⏱️ Video Timestamps

0:00 – Intro
0:10 – Introduction
1:25 – Question Explanation
2:20 – Example Explanation
4:10 – Approach Discussion
5:25 – Code - 1 Writing
13:00 – Code - 2 Optimized Code
15:50 – Time and Space Complexity
18:15 – Tomorrow’s Question Basic Explanation
23:10 – Outro
What You'll Learn in This Video

🔄 Brute force vs optimized logic
🧠 HashSet usage in JS
📊 Sorting-based approach
🛠️ Clean JavaScript code
💡 Time & space complexity breakdown
🚀 Core interview pattern mastery
📅 Day-Wise DSA Journey So Far

Day 1: Two Sum – Leetcode 1
Day 2: Best Time to Buy and Sell Stock – Leetcode 121
Day 3: Valid Parentheses – Leetcode 20

Day 4: Concatenation of Array – Leetcode 1929
Day 5: Build Array from Permutation – Leetcode 1920
Day 6: Shuffle the Array – Leetcode 1470

Day 7: Kids With the Greatest Number of Candies – Leetcode 1431
Day 8: Running Sum of 1D Array – Leetcode 1480
Day 9: Richest Customer Wealth – Leetcode 1672

Day 10: Find the Highest Altitude – Leetcode 1732
Day 11: Number of Good Pairs – Leetcode 1512
Day 12: How Many Numbers Are Smaller Than the Current Number – Leetcode 1365

Day 13: Create Target Array in the Given Order – Leetcode 1389
Day 14: Count Items Matching a Rule – Leetcode 1773
Day 15: Defanging an IP Address – Leetcode 1108

Day 16: Jewels and Stones – Leetcode 771
Day 17: Goal Parser Interpretation – Leetcode 1678
Day 18: Merge Strings Alternately – Leetcode 1768

Day 19: Shuffle String – Leetcode 1528
Day 20: To Lower Case – Leetcode 709
Day 21: Reverse String – Leetcode 344

Day 22: Reverse Words in a String III – Leetcode 557
Day 23: Find the Difference – Leetcode 389
Day 24: Majority Element – Leetcode 169

Day 25: Intersection of Two Arrays – Leetcode 349
Day 26: Single Number – Leetcode 136
Day 27: Missing Number – Leetcode 268

Day 28: Length of Last Word – Leetcode 58
Day 29: First Unique Character in a String – Leetcode 387
Day 30: Valid Anagram – Leetcode 242

Day 31: Power of Two – Leetcode 231
Day 32: Happy Number – Leetcode 202
Day 33: Fizz Buzz – Leetcode 412

Day 34: Move Zeroes – Leetcode 283
🌟 Day 35: Contains Duplicate – Leetcode 217
🔗 Socials and Links
📌 GitHub Repo (DSA with DAX): github.com/daxpatelcg/dsa-with-dax
🌐 Portfolio: dax-patel.netlify.app
🔗 LinkedIn: linkedin.com/in/dax-cg
🐦 Twitter: twitter.com/daxpatel_cg
Day 35 - Contains Duplicate | Leetcode 217 | JavaScript HashSet + Sorting Approach | DSA with DAX
Day 35 - Contains Duplicate | Leetcode 217 | JavaScript HashSet + Sorting Approach | DSA with DAX
Day 35 - Contains Duplicate | Leetcode 217 | JavaScript HashSet + Sorting Approach | DSA with DAX
Day 35 - Contains Duplicate | Leetcode 217 | JavaScript HashSet + Sorting Approach | DSA with DAX
Day 35 - Contains Duplicate | Leetcode 217 | JavaScript HashSet + Sorting Approach | DSA with DAX
Leetcode 217 Contains Duplicate JavaScript Solution | HashSet Explained
Leetcode 217 Contains Duplicate JavaScript Solution | HashSet Explained
Leetcode 217 Contains Duplicate JavaScript Solution | HashSet Explained
Leetcode 217 Contains Duplicate JavaScript Solution | HashSet Explained
Leetcode 217 Contains Duplicate JavaScript Solution | HashSet Explained
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#HashSetInJavaScript
#DSADailyChallenge
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