Bird
Raised Fist0

Which of the following problems CANNOT be efficiently solved using subsets generated by bitmask enumeration?

easy🔍 Pattern Recognition Q2 of Q15
Bit Manipulation - Subsets Using Bitmask
Which of the following problems CANNOT be efficiently solved using subsets generated by bitmask enumeration?
AFind the shortest path in a weighted graph
BFind all combinations of characters in a string
CEnumerate all subsets of a small integer array
DGenerate all subsets of a set of unique integers
Step-by-Step Solution
Solution:

  1. Step 1: Analyze problem types

    Generating subsets or combinations fits bitmask enumeration well; shortest path problems require graph algorithms.

  2. Step 2: Identify which problem is unsuitable

    Shortest path in weighted graph is a graph traversal problem, not subset enumeration.

  3. Final Answer:

    Option A -> Option A

  4. Quick Check:

    Shortest path problems require BFS/Dijkstra, not bitmask subsets [OK]
Quick Trick: Bitmask suits subset enumeration, not graph traversal [OK]
Common Mistakes:
MISTAKES
  • Assuming all combinatorial problems fit bitmask
  • Confusing graph problems with subset enumeration
Trap Explanation:
PITFALL
  • Candidates often think bitmask can solve all combinatorial problems, missing graph-specific algorithms.
Interviewer Note:
CONTEXT
  • Checks candidate's ability to distinguish problem domains and anti-patterns.
Master "Subsets Using Bitmask" in Bit Manipulation

3 interactive learning modes - each teaches the same concept differently

Try ItSolutionTrace

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions
More Bit Manipulation Quizzes
Bitwise AND of Numbers Range - Bitwise AND of Numbers Range - Quiz 1easy Counting Bits (0 to N) - Counting Bits (0 to N) - Quiz 12easy Generate All Permutations Using Bitmask DP - Generate All Permutations Using Bitmask DP - Quiz 3easy Maximum Product of Word Lengths - Maximum Product of Word Lengths - Quiz 6medium Maximum Product of Word Lengths - Maximum Product of Word Lengths - Quiz 4medium Maximum XOR of Two Numbers - Maximum XOR of Two Numbers - Quiz 10hard Power of Four - Power of Four - Quiz 9hard Power of Two - Power of Two - Quiz 11easy Reverse Bits - Reverse Bits - Quiz 8hard Single Number III (Two Singles) - Single Number III (Two Singles) - Quiz 2easy