BFS 1

[MeghaN28]

No description provided.

[super30admin]

Level Order Traversal in Binary tree (BinaryTreeBFS.java)

Strengths:

• Correct BFS algorithm implementation
• Good variable naming (que, result, li)
• Proper handling of edge cases (null root)
• Accurate time/space complexity analysis in comments
• Clean code structure with appropriate use of LinkedList and ArrayList

Areas for Improvement:

1. Critical Bug: The method parameter type is CourseScheduleBFS instead of TreeNode. This will cause a compilation error. The signature should be public List<List<Integer>> levelOrder(TreeNode root).
2. The comments are good but could be more concise
3. Consider adding a comment explaining the level-by-level processing

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VERDICT: NEEDS_IMPROVEMENT

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Scheduling Courses (BinaryTreeDFS.java)

Strengths:

• The code is clean, well-commented, and follows good coding practices
• The recursive approach is well-implemented with proper null checks
• Variable naming is clear and descriptive
• The solution correctly solves the binary tree level order traversal problem

Critical Issue:

• This is the wrong solution entirely. You submitted a solution for "Binary Tree Level Order Traversal" (LeetCode 102) when the problem asked for "Course Schedule" (LeetCode 207). These are completely different problems:
  • Course Schedule: Detects cycles in a directed graph using DFS/BFS
  • Your solution: Traverses a binary tree level by level using DFS

To improve:

• Always read the problem statement carefully before submitting
• Ensure your solution addresses the specific constraints and requirements of the given problem
• For the Course Schedule problem, you would need to use graph cycle detection (either DFS with visited/path tracking or topological sort using Kahn's algorithm with BFS)

VERDICT: NEEDS_IMPROVEMENT