Two Sum Problem

[nagasai67]

No description provided.

[super30admin]

Strengths:

• The solution correctly implements the optimal approach using a hash map to achieve O(n) time complexity, which is better than the reference solution's O(n^2).
• The code is concise and easy to understand, with clear variable names and comments explaining the approach.
• The solution handles edge cases appropriately (e.g., when no solution is found, it returns [-1, -1], though the problem states there is exactly one solution, so this is safe).

Areas for Improvement:

• While the solution is already efficient, it's worth noting that the problem states there is exactly one solution, so the return statement at the end may never be reached. However, including it is good practice for completeness.
• The comments are helpful, but ensure they are accurate. The space complexity is indeed O(n) due to the hash map, which is correct.
• Consider adding a docstring to the method for better documentation, though it's not strictly necessary.

Overall, this is an excellent solution that meets all the requirements and demonstrates a good understanding of the problem and efficient algorithms.