BSF1

[YogeshPardeshi]

No description provided.

[super30admin]

Level Order Traversal in Binary tree (Problem1.java)

Strengths:

• Correctly implements the BFS level order traversal algorithm
• Clean and readable code structure
• Proper handling of edge cases (null root)
• Good variable naming convention
• Follows standard Java conventions for queue usage

Areas for Improvement:

• The solution is functionally equivalent to the reference and has no significant issues
• Minor suggestion: Could add @Override annotation if implementing an interface, but not required here
• Consider adding comments explaining the algorithm for better documentation

VERDICT: PASS

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Scheduling Courses (Problem2.java)

Strengths:

• Correctly implements Kahn's algorithm for topological sorting
• Good handling of edge cases (empty prerequisites, all courses having prerequisites)
• Clean and readable code structure
• Proper use of Java collections (LinkedList, ArrayList, HashMap)
• Time and space complexity match the reference solution

Areas for Improvement:

• The early return if(q.isEmpty()) return false; is technically correct but could be more precise. If the queue is empty but not all courses are processed, it means there's a cycle. However, this check works because if there's a cycle, no course in that cycle will ever reach indegree 0.
• Consider adding a final check: return count == numCourses; at the end instead of relying on intermediate returns (though the current approach works correctly).
• The HashMap approach is slightly less efficient than using an ArrayList of lists since we know the number of courses upfront, but it's still correct and readable.

VERDICT: PASS