Done Hashing-2

[sainathek1999]

No description provided.

[super30admin]

Strengths:

• The student has correctly implemented all three problems with optimal time and space complexity.
• The code is clean, well-organized, and follows good coding practices.
• The comments explaining the approach are clear and concise.
• The student has demonstrated a good understanding of hashmap usage for solving these problems.

Areas for Improvement:

• While the comments are good, they could be slightly more detailed in explaining why certain operations are performed (like why we initialize the map with (0,1) in problem1).
• In problem3, the space complexity comment could be more precise by mentioning that it's O(1) because the alphabet size is fixed (26 letters for English), though this is implied.
• The variable naming could be slightly more descriptive in some places (like 'n' in problem1 could be 'num' for clarity).

[super30admin]

• Strengths:

  • The student has a good understanding of the problems and has implemented efficient solutions.
  • The code is clean, well-commented, and follows best practices.
  • The student has correctly analyzed the time and space complexity for each problem.

• Areas for Improvement:

  • While the comments are good, adding a brief example or more detailed explanation for the logic in problem1.java and problem2.java could help reinforce understanding.
  • In problem3.java, the comment mentions "hash set" but the solution uses a HashSet, which is correct. However, clarifying that it's used to track odd-count characters might be helpful for readers.