Design 2

[nagasai67]

No description provided.

[super30admin]

Strengths:

• The solution correctly implements the HashMap using separate chaining with linked lists.
• The code is clean, well-commented, and easy to understand.
• The use of a dummy node in each bucket simplifies the insertion and deletion operations.

Areas for Improvement:

• In the put method, you are traversing the list to check if the key exists and then traversing again to append if it doesn't. This can be optimized by searching for the key and then updating or appending in a single pass. The reference solution uses a helper method getPrev to find the node before the target key, which allows handling both update and insertion without redundant traversal.
• Consider using a larger bucket size (e.g., 1000 or 10000) to reduce the average chain length, especially since the constraints allow up to 10^4 operations. This would improve worst-case performance.
• The remove method currently does not free the memory of the removed node. In Python, this is not critical due to garbage collection, but it's good practice to explicitly set the node to None if possible. However, the current implementation is acceptable.

Overall, the solution is correct and efficient. The improvements are minor and primarily about optimization.