BFS-1 Done

[vaishnavi2231]

No description provided.

[super30admin]

1. Strengths:

   • The student has provided multiple solutions (BFS and DFS) for both problems, demonstrating a good understanding of different approaches.
   • The code is well-commented, making it easy to understand the logic and approach.
   • The solutions are efficient and match the expected time and space complexity.
   • The student has handled edge cases (like empty tree or no prerequisites) correctly.

2. Areas for Improvement:

   • For the BFS solution in "Level Order Traversal," using pop(0) on a list in Python is O(n) time complexity for each operation. It would be more efficient to use collections.deque for O(1) popleft operations.
   • In the DFS solution for "Course Schedule," the student could consider using a separate array or dictionary to track the completion status of courses instead of modifying the hashmap (though the current approach is still correct).
   • The comments could be slightly more detailed, especially explaining why certain steps are taken (e.g., why hashmap[crs] = [] is done in the DFS solution).