Day 29 - First Unique Character in a String | Leetcode 387 | 2 Approaches + JavaScript| DSA with DAX

💡 Struggling to find the first unique character in a string?
In this video, we crack Leetcode 387 with 2 efficient approaches and clean JavaScript solutions — designed to help you ace coding interviews!
🚀 Learn the logic, master the code, and stay ahead in your DSA journey. Watch now!

📚 About the Series – DSA with DAX
Welcome to Day 29 of DSA with DAX — a daily series solving Leetcode problems from scratch.
👉 The goal? To help you master DSA concepts, write clean code, and stay consistent. Start from Day 1 for a complete journey — build your DSA mastery step-by-step!

🎥 Transcript – Video Breakdown

0:00 – Intro
0:10 – Introduction
1:31 – Question Explanation
2:40 – Example Explanation
3:45 – Approach Discussion
5:15 – Code - 1 Writing
9:50 – Code - 2 Based on Approach 2
15:45 – Time and Space Complexity
17:30 – Tomorrow’s Question Basic Explanation
20:25 – Outro

What You’ll Learn in This Video

🔹 Problem explanation with examples
🔹 Two approaches to solve efficiently
🔹 Clean JavaScript code
🔹 Time and space complexity analysis
🔹 Boost confidence for string-related interview questions

📘 📆 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

🔗 Socials and Links

Day 29 - First Unique Character in a String | Leetcode 387 | 2 Approaches + JavaScript Code | DSA with DAX
Day 29 - First Unique Character in a String | Leetcode 387 | 2 Approaches + JavaScript Code | DSA with DAX
Day 29 - First Unique Character in a String | Leetcode 387 | 2 Approaches + JavaScript Code | DSA with DAX
Day 29 - First Unique Character in a String | Leetcode 387 | 2 Approaches + JavaScript Code | DSA with DAX
Day 29 - First Unique Character in a String | Leetcode 387 | 2 Approaches + JavaScript Code | DSA with DAX

Leetcode 387 - First Unique Character in a String | JavaScript Solution Explained
Leetcode 387 - First Unique Character in a String | JavaScript Solution Explained
Leetcode 387 - First Unique Character in a String | JavaScript Solution Explained
Leetcode 387 - First Unique Character in a String | JavaScript Solution Explained
Leetcode 387 - First Unique Character in a String | JavaScript Solution Explained

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