Completed Hashing-2

[Sanket-S-Kale]

No description provided.

[super30admin]

Subarray Sum Equals K (Problem1.py)

Strengths:

• Excellent documentation with clear docstring explaining time and space complexity
• Well-chosen variable names that make the code self-documenting
• Comprehensive inline comments explaining the algorithm logic
• Correct handling of the base case (prefix sum of 0)
• Clean, readable Python code following PEP 8 style

Areas for Improvement:

• Minor optimization: Consider using rSumFreqMap.get(x, 0) directly in the addition to avoid the conditional check:

  result += rSumFreqMap.get(x, 0)

  This would be slightly more concise, though the current approach is correct and readable.

VERDICT: PASS

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Contiguous Binary Subarray (Problem2.py)

Strengths:

1. Well-documented solution with clear explanation of time and space complexity
2. Correct algorithm implementation matching the reference solution
3. Clean, readable code with descriptive variable names
4. Good use of Python's built-in functions (enumerate, dict)
5. Proper handling of edge cases (base case initialization)

Areas for Improvement:

1. Remove the commented-out rSums = [] line to keep the code clean
2. Consider adding type hints for better code documentation (e.g., nums: List[int] -> int)
3. The solution is already optimal - no algorithmic improvements needed

Minor Note: The solution is functionally equivalent to the reference Java solution but uses Python idioms appropriately. The approach of storing only the first occurrence of each running sum is correctly implemented.

VERDICT: PASS

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Longest Palindrome in a string (Problem3.py)

Strengths:

• Clean, well-commented code that explains the logic clearly
• Correct algorithm implementation matching the reference solution
• Good variable naming (charSet, palindromeLen)
• Efficient use of HashSet with discard() for removal

Areas for Improvement:

• The solution is essentially identical to the reference solution, which is fine for correctness but could explore alternative approaches for learning purposes
• Could consider using collections.Counter for a more Pythonic approach
• The if len(charSet): could be written as if charSet: for cleaner Python idiom

Minor suggestions:

• The comments are helpful but could be slightly more concise
• Consider adding type hints for better code documentation

VERDICT: PASS