Bit Manipulation - Number of 1 Bits (Hamming Weight)
Which of the following problems CANNOT be solved efficiently using the Number of 1 Bits (Hamming Weight) pattern?
Which of the following problems CANNOT be solved efficiently using the Number of 1 Bits (Hamming Weight) pattern?
easy🔍 Pattern Recognition Q2 of Q15
Step-by-Step Solution
Solution:
Step 1: Analyze each problem type
Counting set bits, checking power of two, and parity all relate directly to counting or properties of set bits.Step 2: Identify the problem that doesn't fit
Finding the longest consecutive sequence of 1s requires scanning bit runs, not just counting total set bits.Final Answer:
Option A -> Option AQuick Check:
Longest consecutive 1s is a different pattern than Hamming weight [OK]
Quick Trick: Longest consecutive 1s ≠ counting total set bits [OK]
Common Mistakes:
MISTAKES- Assuming all bit problems reduce to counting bits
- Confusing parity with longest run
Trap Explanation:
PITFALL- Candidates often think all bit problems are solved by counting bits, missing run-length patterns.
Interviewer Note:
CONTEXT- Tests anti-pattern recognition and problem classification skills.
Master "Number of 1 Bits (Hamming Weight)" in Bit Manipulation
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