Done with Hash Map 1

[RitikaC1]

No description provided.

[super30admin]

Grouping Anagrams Together (problem1.py)

Strengths:

• Clear problem-solving approach with two different methods
• Good use of comments to explain the logic
• Clean and readable code structure
• Correct handling of edge cases

Areas for Improvement:

• The space complexity claim of O(1) is incorrect. Since the output must contain all N strings grouped together, the space complexity is O(N * K) for storing results.
• The prime number approach (Approach 2) has potential overflow issues with long strings. Consider using addition with modulo to prevent this.
• The commented-out code makes the solution look incomplete. Consider either implementing it fully or removing it.
• The getHash method in Approach 2 should be properly indented within the class.

VERDICT: PASS

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Isomorphic Strings (problem2.py)

Strengths:

• Clean, readable implementation with good variable naming
• Correct algorithm implementation matching the reference solution
• Proper handling of both forward and backward mappings
• Good use of Python idioms (in operator for dictionary membership checks)

Areas for Improvement:

• Space complexity claim is incorrect - should be O(n) in worst case, not O(1)
• Could add an early length check: if len(s) != len(t): return False for robustness
• Consider adding docstring improvements to better document the algorithm

VERDICT: PASS

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Word Pattern (problem3.py)

Strengths:

• Good documentation with time/space complexity
• Clean variable naming
• Recognized the need for bidirectional mapping

Areas for Improvement:

• The implemented approach 2 has a logical bug - the set-based approach doesn't correctly handle the bidirectional constraint
• The commented-out approach 1 is actually the correct solution - using two hash maps for bidirectional checking is the right approach
• Consider using the commented-out code as the final solution
• The logic for adding to s_set is flawed - it should add the word when a NEW pattern character is encountered, not in the else branch

VERDICT: NEEDS_IMPROVEMENT