Done Hashing 2

[RitikaC1]

No description provided.

[super30admin]

Subarray Sum Equals K (problem1.py)

Strengths:

• Clean, well-structured code that's easy to follow
• Correct use of Python dictionary with .get() method for default values
• Good variable naming convention
• Proper initialization with {0:1} to handle edge cases
• Comprehensive time and space complexity comments

Areas for Improvement:

• The variable name map shadows Python's built-in map() function. Consider using prefix_count or sum_counts instead for better practice.
• Could add a brief docstring explaining the algorithm approach for future reference.

This is a solid implementation that matches the reference solution in both approach and efficiency.

VERDICT: PASS

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Contiguous Binary Subarray (problem2.py)

Strengths:

• Clean, well-documented code with time/space complexity comments
• Clear variable naming (runningSum, result)
• Efficient use of hashmap to track first occurrence of each running sum
• Correctly handles edge cases (initialized map with {0: -1} to catch subarrays starting from index 0)

Areas for minor improvement:

• The comment "Any problem you faced while coding this: None" is unnecessary and could be removed in production code
• Could add a brief docstring explaining the algorithm approach in more detail

The solution is functionally equivalent to the reference solution and demonstrates good understanding of the problem-solving approach.

VERDICT: PASS

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Longest Palindrome in a string (problem3.py)

Strengths:

• Correct algorithm implementation that matches the reference solution
• Clean, readable code with descriptive variable names
• Good documentation including complexity analysis
• Efficient use of set operations for O(1) lookup/insert/delete

Areas for Improvement:

• Consider using if i not in set_char instead of if i in set_char for slightly more Pythonic code (membership testing reads more naturally when checking for absence)
• The solution is already optimal; no significant optimizations needed

Note: The problem states O(1) space complexity in the reference, but technically the HashSet can hold up to 52 characters (all uppercase and lowercase letters), so it's actually O(1) with respect to the alphabet size (constant bound), which is acceptable.

VERDICT: PASS