Tree2

[YogeshPardeshi]

No description provided.

[super30admin]

Construct Binary Tree from Inorder and Postorder Traversal (Problem1.java)

Strengths:

• Correct implementation of the algorithm with proper understanding of traversal orders
• Good use of HashMap for O(1) index lookup
• Clean recursive structure with appropriate base case
• Proper handling of instance variables for state management across recursive calls

Areas for Improvement:

• Class name should follow standard conventions (e.g., "Solution" instead of "Problem1")
• Consider declaring HashMap<Integer,Integer> as Map<Integer,Integer> for better programming to interfaces
• Could add input validation for null or empty arrays for robustness
• Consider adding comments explaining the key insight: why right subtree is processed before left subtree in postorder

The solution demonstrates solid understanding of tree traversal properties and recursive problem-solving.

VERDICT: PASS

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Root to Leaf Sum (Problem2.java)

Strengths:

• Correct recursive approach with proper base case handling
• Clear variable naming (currNum, result)
• Good use of comments to explain the logic
• Proper accumulation of number values along the path

Areas for Improvement:

• The leaf node check placement is unconventional. Consider checking for leaf before making recursive calls for better readability and consistency with standard implementations
• The code structure could be slightly more aligned with common patterns to improve maintainability

VERDICT: PASS