solved array-1

[anjanaouseph]

Solved problem 28 29 30

[super30admin]

Strengths:

1. The student demonstrates a strong understanding of efficient algorithms, particularly in problem28.py where they outperform the reference solution.
2. The student provides multiple approaches to problems (iterative vs. recursive, initial vs. clean solutions), showing versatility.
3. The code is generally well-commented, explaining the thought process and key steps.

Areas for Improvement:

1. In problem29.py, the first solution could be simplified by directly addressing the boundary cases as done in the second solution. The initial approach is overly complex and prone to errors.
2. The recursive solution in problem30.py, while correct, is less efficient in terms of space complexity compared to the iterative solution. The student should consider when recursion is truly beneficial.
3. The student should ensure consistency in code formatting and style across all solutions (e.g., spacing around operators, indentation).