Hiring process8 levels
  1. 1 IQ Test
  2. 2 Additional Online Test (If Required)
  3. 3 Office Interview with Hiring Manager
  4. 4 Unpaid Test Task (Motivation Check)
  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 > Beautiful Permutation > Editorial

Beautiful Permutation — Solution & Editorial

Back to the Problem

Evens-then-odds only ever puts a gap of 1 at the junction of the two blocks — and there the values differ by more than 1 for N ≥ 4. N = 2, 3 are impossible; N = 1 is the trivial 1.

Complexity: O(N)