hashing-2 - completed

[anjanaouseph]

No description provided.

[super30admin]

• Strengths:

  • The student demonstrates a strong understanding of prefix sums and hash maps, which are key to solving these problems efficiently.
  • The code is clean, well-commented, and follows best practices.
  • The student provides clear explanations of the logic and edge cases, which shows good problem-solving skills.

• Areas for Improvement:

  • In problem17.py, the comment about "Why NOT check prefix directly?" could be more concise or integrated into the main explanation.
  • In problem18.py, the comment about defaultdict(int) is useful but could be slightly clearer about why it's not suitable here.
  • In problem19.py, the variable name "sett" could be more descriptive, such as "char_set" or "seen_chars".