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Which method would you use to check if a HashSet<string> contains a specific element?

easy🧠 Conceptual Q2 of 15
C Sharp (C#) - Collections
Which method would you use to check if a HashSet<string> contains a specific element?
AExists()
BSearch()
CFind()
DContains()
Step-by-Step Solution
Solution:
  1. Step 1: Identify the method to check membership

    The Contains() method checks if an element exists in a HashSet.
  2. Step 2: Confirm other options are invalid

    Methods like Exists(), Find(), and Search() do not exist on HashSet.
  3. Final Answer:

    Contains() -> Option D
  4. Quick Check:

    HashSet membership check = Contains() [OK]
Quick Trick: Use Contains() to check if element exists in HashSet [OK]
Common Mistakes:
MISTAKES
  • Using non-existent methods like Exists()
  • Confusing with List methods
  • Trying to use Find() which is not in HashSet

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