LeetCode #1 Two Sum | Best Approach Explained 🔥 | C++ Step-by-Step

In this video, we solve LeetCode Problem #1 – Two Sum, one of the most important and commonly asked interview questions. 💡 Problem: Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to the target. 🔥 What you'll learn in this video: - Clear understanding of the problem - Best optimized approach using Hash Map - Step-by-step explanation - Time and space complexity analysis 🧠 Approach Used: We use a Hash Map to store elements and their indices. While traversing the array, we check if the complement (target - current element) already exists. ⏱️ Complexity: Time Complexity: O(n) Space Complexity: O(n) 📌 This approach is optimal and widely used in interviews. 👍 If you found this helpful: Like 👍 | Share 📤 | Subscribe 🔔 📚 More DSA videos coming soon: - Arrays - Strings - Sliding Window - Binary Search - Graphs #LeetCode #TwoSum #DSA #Coding #CPP #Algorithms #InterviewPrep