Strengths:

• The student has demonstrated a good understanding of both problems and provided efficient solutions.
• The code is clean, readable, and follows best practices.
• The use of a hash map in the twoSum problem shows an understanding of optimizing time complexity at the expense of space.

Areas for Improvement:

• For the twoSum problem, adding a comment explaining the logic behind using a hash map could enhance readability for beginners.
• In the knapsack problem, the variable names could be more descriptive (e.g., 'dp' could be 'dp_table' for clarity).
• The student could consider adding edge case handling (e.g., empty input lists) to make the solutions more robust.