Design-2

[mananrg]

No description provided.

[super30admin]

Create Queue using Stacks (problem1.py)

Strengths:

• Correct implementation of the two-stack queue pattern
• Good use of comments explaining array behavior
• Proper handling of edge cases (empty queue check in pop)
• Clean and readable code structure

Areas for Improvement:

• Variable names could be more descriptive (inst/outst vs inStack/outStack)
• Could add docstrings to methods for better documentation
• The comment about x=[1,2,3] is a bit confusing and doesn't add much value

The solution is functionally correct and efficient. It demonstrates good understanding of the problem and implements the standard solution pattern effectively.

VERDICT: PASS

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Implement Hash Map (problem2.py)

Strengths:

1. Good attempt at a two-level bucket approach, which is a valid HashMap design
2. Clear separation of hash functions
3. Reasonable code structure and readability

Areas for Improvement:

1. Critical Bug: The hash functions don't align properly. hash2 returns key // 1000, but the secondary array sizes don't match this logic
2. Performance Issue: Initializing secondary arrays with -1 values in put() causes O(n) operations, not O(1)
3. Edge Cases: The special case for primaryIndex == 0 creating a larger array is confusing and likely incorrect
4. Remove Logic: Setting value to -1 instead of actually removing the entry can cause confusion about whether a key exists
5. Comments: The comment claiming O(1) time complexity is incorrect and misleading

Recommended Fixes:

1. Ensure hash functions are consistent with array sizing
2. Consider lazy initialization or use a more efficient data structure for secondary buckets
3. Fix the alignment between primary and secondary bucket calculations

VERDICT: NEEDS_IMPROVEMENT