Completed Precourse-2

[Mike9330]

No description provided.

[super30admin]

1. Correctness: The binary search implementation is incorrect. The while loop condition should be l <= r instead of l < r. Also, the updates to l and r should be l = mid + 1 and r = mid - 1 respectively, not incrementing/decrementing by 1.
2. Time Complexity: The stated O(n) is incorrect for binary search; it should be O(log n).
3. Space Complexity: Missing - should be O(1) for iterative binary search.
4. Code Quality: The code is readable but needs proper comments explaining the logic.
5. Efficiency: The current implementation doesn't follow the binary search algorithm correctly, leading to potential infinite loops or incorrect results.