BFS-1

[botlamanoj29]

It has executed on leet code.

[super30admin]

Strengths:

• The solutions are correct and efficient, matching the expected time and space complexity.
• The code is well-commented and easy to understand.
• Good use of data structures like deque and defaultdict.

Areas for Improvement:

• In the level order traversal, the checks for rootNode!=None are redundant since the queue only contains non-None nodes. You can simplify the code by removing these checks.
• In the course schedule problem, the variable names could be more descriptive (e.g., leaveCourse could be currentCourse or completedCourse).
• The comments could be more detailed, explaining the logic behind each step, especially in the course schedule problem.