Complete BFS-1

[dhruvil15]

No description provided.

[super30admin]

Level Order Traversal in Binary tree (Problem58.java)

Strengths:

• Clean, readable code with good separation of concerns
• Correct use of recursion with proper base case
• Efficient O(n) time complexity
• Good variable naming and code organization

Areas for Improvement:

• The space complexity comment "O(h)" is slightly misleading - while the recursion stack is O(h), the result storage is O(n). Consider clarifying this in comments.
• The problem specifically asks for "level order traversal" which typically implies breadth-first (level by level from left to right). While the DFS approach produces the same output, the classic interpretation uses BFS with a queue.
• Could add a brief comment explaining the recursive approach for clarity.

VERDICT: PASS

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Scheduling Courses (Problem59.java)

Strengths:

• Correctly implements topological sort using Kahn's algorithm
• Good understanding of the problem's graph nature
• Clean, readable code with helpful comments
• Handles edge cases appropriately
• Same time and space complexity as the optimal solution

Areas for Improvement:

• Consider using ArrayDeque instead of LinkedList for the queue - it's more memory efficient and faster for queue operations
• The early return if (q.isEmpty()) return false; is actually redundant since count would be 0 and the subsequent check if (count == numCourses) return true; would handle this case
• Could add a check after the BFS loop: if count != numCourses, return false (though this is implicit since the loop ends)

VERDICT: PASS