🎯 Two Sum Problem: 4 Approaches Explained & Coded! 🎯

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This is a deep dive into a foundational problem in our Arrays & Hashing Concepts & Questions playlist!

🎯 Two Sum Problem: 4 Approaches Explained & Coded! 🎯

Hey everyone! 👋 Welcome back to Bit By Bit! In today's video, we're tackling the famous Two Sum problem, a must-know for any aspiring developer, and we're exploring four distinct approaches to solve it! 🚀

We'll explore:

✅ Approach 1: Brute Force - A straightforward, intuitive way to start.
✅ Approach 2: Sorting + Binary Search - How combining these techniques can improve efficiency.
✅ Approach 3: Sorting + Two Pointers - A highly optimized method for sorted arrays.
✅ Approach 4: Using a Hash Set (Optimal) - The most efficient and commonly used solution for its speed.
✅ A detailed explanation and dry run 🚶‍♂️🚶‍♀️ for each of these four approaches to solidify your understanding.
✅ Complete and well-commented code implementations 💻 on GeeksforGeeks (GFG) for all four methods.

Understanding these different ways to solve Two Sum will not only help you ace interviews but also build a strong foundation in algorithm design and optimization!

➡️Github solution link (Java + C++) : https://github.com/Ayush2649/Intervie...)
➡️ Explore our Arrays & Hashing Concepts & Questions playlist for more essential problems: [   • Arrays & Strings Popular Interview Questions  ] 📚
➡️ Catch our previous video on [   • 🥈 Finding the Second Largest Element in an...  ] ⏪
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➡️ Practice all approaches on GeeksForGeeks: [https://www.geeksforgeeks.org/problem...]

Timestamps:
[0:00] Introduction to the Two Sum Problem 🎬
[1:13] Approach 1: Brute Force Explained & Dry Run 🤔
[3:50] Approach 2: Sorting + Binary Search Explained & Dry Run 🕵️‍♂️
[6:20] Approach 3: Sorting + Two Pointers Explained & Dry Run ✌️
[9:30] Approach 4: Using a Hash Set (Optimal) Explained & Dry Run. ✨
[12:37] Code for Brute Force on GFG 👨‍💻
[13:57] Code for Sorting + Binary Search on GFG 💻
[17:05] Code for Sorting + Two Pointers on GFG 🚀
[19:55] Code for Hash Set Approach on GFG 💡
[21:05] Conclusion & Which Approach to Use When 🎉

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Don't forget to LIKE 👍, COMMENT 💬, and SHARE 📤 this video if you found it helpful!
Let me know in the comments which Two Sum approach is your favorite! 🤔

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