14. Longest Common Prefix | Optimized String Matching Explained in C++ | LeetCode Solution

In this video, I solve LeetCode 14: Longest Common Prefix using an optimized string matching approach in C++. ✅ Problem Explanation ✅ Optimized Approach ✅ Dry Run ✅ Time & Space Complexity ✅ Clean C++ STL-Based Code Approach: We take the first string as the initial prefix and compare it with every other string. If the current string does not start with the prefix, we continuously remove the last character from the prefix until it matches. Algorithm: 1. Initialize prefix with first string 2. Traverse remaining strings 3. Check if current string starts with prefix 4. If not, remove last character using `pop_back()` 5. Repeat until common prefix is found 6. Return final prefix Time Complexity: O(N × M) Space Complexity: O(1) 🔗 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 #strings #longestcommonprefix #codinginterview #striverdsa #leetcode14 #datastructures #algorithms