BFS-1 Done

[Sreeja-99]

No description provided.

[super30admin]

1. Correctness: Both approaches (BFS and DFS) correctly solve the problem. The BFS approach is straightforward and efficient, while the DFS approach provides a recursive alternative. Both are correct and handle edge cases well.
2. Time Complexity: Both approaches have a time complexity of O(n), which is optimal for this problem.
3. Space Complexity: Both approaches have a space complexity of O(n), which is also optimal. The BFS approach uses a queue, and the DFS approach uses the call stack, both of which are proportional to the number of nodes.
4. Code Quality: The code is well-structured and readable. Comments are clear and helpful. The variable names are descriptive, and the logic is easy to follow.
5. Efficiency: Both approaches are efficient. The BFS approach is more intuitive for level order traversal, while the DFS approach is a clever alternative. No further optimizations are needed.

Suggestions for Improvement:

• The DFS approach could benefit from a brief explanation in the comments about how it maintains the level information during traversal.
• The unrelated file (Leetcode_207.java) should not be included in the submission for this problem. It is better to keep solutions for different problems separate.