Strengths:

• The student demonstrates a strong understanding of the problems and provides correct solutions.
• The use of multiple approaches (especially for Leetcode_448) shows a good grasp of different optimization techniques.
• Code is clean, well-commented, and easy to follow.
• Efficient use of space and time complexity.

Areas for Improvement:

• For Leetcode_289, the student could consider adding a brief explanation of the rules of the game of life in the comments for better clarity.
• In the findDisappearedNumbers method (way2), the student could add a comment explaining why they are multiplying by -1 and then reverting it back, as this might not be immediately obvious to all readers.