1929 Concatenation of Array | Easy Array Solution Explained in C++ | LeetCode Solution

In this video, I solve LeetCode 1929: Concatenation of Array using an efficient array traversal approach in C++. ✅ Problem Explanation ✅ Optimized Approach ✅ Dry Run ✅ Time & Space Complexity ✅ Clean C++ STL-Based Code Approach: We create a new array of size `2n` and place the original array elements twice. Algorithm: 1. Create an answer array of size `2n` 2. Traverse the original array 3. Place current element at index `i` 4. Place same element again at index `i + n` 5. Return the final concatenated array Time Complexity: O(N) Space Complexity: O(N) 🔗 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 #arrays #concatenationofarray #codinginterview #striverdsa #leetcode1929 #datastructures #algorithms