Done Hashing-2

[bansariradadiya01]

No description provided.

[super30admin]

Subarray Sum Equals K (SumOfArraySum.java)

Strengths:

• Correctly implements the prefix sum with hashmap technique
• Good variable naming conventions
• Proper handling of the base case (map initialized with 0,1)
• Logic correctly identifies subarrays with sum equal to k

Areas for Improvement:

1. Use map.getOrDefault(rsum, 0) + 1 instead of checking containsKey twice - this is more efficient and cleaner
2. For LeetCode-style problems, the method should be named subarraySum and be in a class named Solution to match the expected format
3. Consider adding comments explaining the prefix sum approach for clarity

VERDICT: PASS

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Contiguous Binary Subarray (Contiguous_array.class)

• Strengths: The file structure suggests the student attempted to implement the standard prefix sum + HashMap approach for this problem.
• Weaknesses:
  • Submitted compiled bytecode instead of source code
  • Cannot verify correctness, logic, or code quality
  • Cannot provide specific feedback on implementation details
• Recommendation: Please submit the .java source file so the solution can be properly evaluated. The source code should show the implementation using a HashMap to track running sum indices, which is the correct approach for this problem.

VERDICT: NEEDS_IMPROVEMENT

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Longest Palindrome in a string (Palindrome.class)

Strengths:

• The approach (using a HashSet to track unpaired characters) appears to be correct based on the bytecode analysis
• The logic of counting pairs and handling the center character seems sound

Critical Issues:

1. Wrong file format submitted: You submitted a .class (compiled bytecode) file instead of a .java (source code) file. For evaluation purposes, we need the human-readable source code.
2. No source code visible: Without the .java file, we cannot properly evaluate:
   • Code structure and readability
   • Variable naming conventions
   • Comment quality
   • Overall code organization

To improve:

• Always submit the .java source file, not the compiled .class file
• Ensure your code is properly formatted and indented
• Include appropriate comments explaining your approach

VERDICT: NEEDS_IMPROVEMENT