49. Group Anagrams | HashMap + Sorting Explained in C++ | LeetCode Solution

In this video, I solve LeetCode 49: Group Anagrams using HashMap and Sorting in C++. ✅ Problem Explanation ✅ Optimized Approach ✅ Dry Run ✅ Time & Space Complexity ✅ Clean C++ STL-Based Code Approach: Two strings are anagrams if their sorted forms are equal. We sort every string and use the sorted string as a key in an unordered_map to group all anagrams together. Algorithm: 1. Create an unordered_map 2. Traverse all strings 3. Store original string in temporary variable 4. Sort the string 5. Use sorted string as key in map 6. Push original string into corresponding group 7. Return all grouped anagrams Time Complexity: O(N × K log K) Space Complexity: O(N × K) Where: * N = number of strings * K = average string length 🔗 GitHub: https://github.com/atulXdev 🔗 LeetCode Profile: https://leetcode.com/u/atul_singh_cg/ 🔗 LinkedIn: https://www.linkedin.com/in/atul-singh-987b0b394/ #leetcode #dsa #cpp #groupanagrams #hashmap #strings #codinginterview #striverdsa #leetcode49 #datastructures #algorithms