Hashing-2 complete

[KartavyaBhatt]

No description provided.

[super30admin]

Subarray Sum Equals K (Problem1.py)

Strengths:

• Clean, readable implementation of a correct algorithm
• Excellent problem-solving approach that matches the optimal solution
• Good use of comments to explain the logic
• Properly handles edge cases (starting with {0: 1})

Areas for Improvement:

• Consider using getOrDefault() method for more concise map updates (e.g., cumSumMap[cumSum] = cumSumMap.get(cumSum, 0) + 1)
• The separate if-check before increment, while correct, adds unnecessary lines of code

VERDICT: PASS

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Contiguous Binary Subarray (Problem2.py)

Strengths:

• Excellent understanding of the problem and the optimal approach
• Clear and concise code with meaningful variable names
• Comprehensive comments explaining the logic
• Proper handling of edge cases (initializing map with 0: -1)

Areas for improvement:

• The code could be slightly more concise by using a ternary operator for the cumSum update, but this is a minor style preference and the current approach is perfectly readable.
• Consider adding type hints for better code documentation (e.g., nums: List[int] -> int is already present, which is good).

VERDICT: PASS

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Longest Palindrome in a string (Problem3.py)

Strengths:

• Clear and comprehensive comments explaining the algorithm
• Clean, readable code with meaningful variable names
• Correct algorithm implementation that handles all edge cases
• Good use of set data structure for tracking unmatched characters

Areas for Improvement:

• Space complexity could be slightly improved by using a fixed-size array instead of a set, but this optimization is minor and the current approach is more readable
• The solution is functionally equivalent to the reference solution and demonstrates solid understanding of the problem

The student's solution is correct, efficient, and well-documented. It matches the reference solution's approach and achieves the same time complexity.

VERDICT: PASS