In-House Interactive Coding Arena
Solve Real LeetCode & HackerRank Algorithmic Challenges
Practice Data Structures, Algorithms, Dynamic Programming, and SQL directly inside the ZAYA CODE HUB browser IDE. Instant execution worker and automated test case runner.
Difficulty:
| Status | Title | Category | Difficulty | Action |
|---|---|---|---|---|
| 1. Two Sum | Arrays & Hashing | Easy | Solve Challenge | |
| 2. Valid Palindrome | Strings | Easy | Solve Challenge | |
| 3. Longest Substring Without Repeating Characters | Sliding Window | Medium | Solve Challenge | |
| 4. Reverse Linked List | Linked List | Easy | Solve Challenge | |
| 5. Binary Tree Inorder Traversal | Trees & Graphs | Easy | Solve Challenge | |
| 7. Valid Anagram | Strings | Easy | Solve Challenge | |
| 8. Best Time to Buy and Sell Stock | Arrays & Sliding Window | Easy | Solve Challenge | |
| 9. Valid Parentheses | Stack | Easy | Solve Challenge | |
| 10. Maximum Subarray | Dynamic Programming | Medium | Solve Challenge | |
| 11. Container With Most Water | Two Pointers | Medium | Solve Challenge | |
| 12. Binary Search | Binary Search | Easy | Solve Challenge | |
| 13. Single Number | Bit Manipulation | Easy | Solve Challenge | |
| 14. Fizz Buzz | Math | Easy | Solve Challenge | |
| 15. Product of Array Except Self | Arrays & Hashing | Medium | Solve Challenge | |
| 16. Move Zeroes | Two Pointers | Easy | Solve Challenge | |
| 17. Majority Element | Arrays & Hashing | Easy | Solve Challenge | |
| 18. Fibonacci Number | Dynamic Programming | Easy | Solve Challenge | |
| 19. Power of Two | Bit Manipulation | Easy | Solve Challenge | |
| 20. Search in Rotated Sorted Array | Binary Search | Medium | Solve Challenge |