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  2. 2 Additional Online Test (If Required)
  3. 3 Office Interview with Hiring Manager
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  5. 5 Paid Test Task and Follow-Up Interview
  6. 6 Iterative Paid Test Tasks
  7. 7 Office Verification
  8. 8 Final Interview with the Founder

Problems > Power of Two > Editorial

Power of Two — Solution & Editorial

Back to the Problem

N > 0 and (N & (N−1)) = 0 — powers of two have exactly one set bit.

Complexity: O(1)

Watch out: 0 is not a power of two, but 0 & -1 = 0 — check N > 0 first.