Backtracking1:ALl done

[hp6318]

No description provided.

[super30admin]

Strengths:

• The student has provided two different approaches (choose/no-choose and for-loop based) for the combination sum problem, demonstrating a good understanding of backtracking.
• Detailed comments and explanations are provided, making the code easy to understand.
• Edge cases are handled correctly, especially in the expression add operators problem where zero-parsing is addressed.

Areas for Improvement:

• The student could further optimize the combination sum solution by avoiding deepcopy and using backtracking with pop operations, which is more efficient in Python.
• For the expression add operators problem, the student could clarify the space complexity in the comments.
• The student could consider using a helper function to avoid code duplication in the expression add operators problem, especially for the common parts of the logic (e.g., appending operators and numbers).