✅ Top 25 Programming Challenges Every Developer Should Master 💡💻

🔷 Arrays & Strings
1️⃣ Find the missing number in a sequence.
2️⃣ Merge two sorted arrays.
3️⃣ Check if two strings are anagrams.
4️⃣ Find the longest palindrome in a string.
5️⃣ Rotate an array by k positions.

🔶 Linked Lists
6️⃣ Detect a cycle in a linked list.
7️⃣ Merge two sorted linked lists.
8️⃣ Remove the N-th node from the end.
9️⃣ Find the intersection point of two linked lists.
🔟 Check if a linked list is a palindrome.

🌲 Trees & Graphs
1️⃣1️⃣ Level order traversal of a binary tree.
1️⃣2️⃣ Invert a binary tree.
1️⃣3️⃣ Serialize and deserialize a binary tree.
1️⃣4️⃣ Implement DFS and BFS for graphs.
1️⃣5️⃣ Dijkstra's algorithm for shortest path.

📊 Algorithms & Logic
1️⃣6️⃣ Kadane’s algorithm (Max subarray sum).
1️⃣7️⃣ Binary search in a rotated array.
1️⃣8️⃣ Count set bits in an integer.
1️⃣9️⃣ Nth Fibonacci using memoization.
2️⃣0️⃣ Find all subsets of a set.

📈 Dynamic Programming & Backtracking
2️⃣1️⃣ 0/1 Knapsack problem.
2️⃣2️⃣ Sudoku solver.
2️⃣3️⃣ N-Queens problem.
2️⃣4️⃣ Word break problem.
2️⃣5️⃣ Edit distance between two strings.

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