LeetCode 1: Two Sum Solution | Intuition + Brute Force + Hashmap Approach | Coding Interview Prep

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Welcome back to Hack Code! In this video, we’ll be tackling LeetCode 1: Two Sum, one of the most commonly asked coding interview problems. Whether you’re a beginner or prepping for your next big technical interview, this video has you covered.

We’ll explore:

🧠 Intuition behind the problem
📝 Brute force approach explained step by step
⚡ Optimized solution using a hashmap for O(N) time complexity
👨‍💻 Code walk-through with comments for each approach

If you’re aiming to ace your next interview, understanding this problem is crucial, as it is a favorite among interviewers from top tech companies like Google, Amazon, and Facebook. Watch till the end for all the insights, tips, and tricks to help you master this problem.

🔔 Don’t forget to subscribe to Hack Code for more problem-solving techniques and coding tutorials.
💬 Got questions? Drop them in the comments!

Related Topics:
Arrays
Hashmaps
Coding Interview Prep
Data Structures & Algorithms

Timestamps:
0:00 Welcome!
0:08 Problem Statement
3:19 About Blind 75
3:47 Approach 1: Brute Force
6:40 Approach 1: Complexities
7:18 Approach 1: Code Demo
7:38 Approach 2: Using HashMap
12:03 Approach 2: Complexities
12:54 Approach 2: Code Demo
13:17 Outro

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