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Interview Question

Internship Interview(Student Candidate)

Coding question: "Implement two operations, 'hasNext()' and

  'next()', that work in O(1) time and use O(log n) space, for a binary tree comprised of 'n' elements."

Interview Answer

1 Answer


The question is inherently wrong. It should have been "... work in AMORTIZED O(1) time". Just "O(1)" time is impossible to achieve.

Interview Candidate on Feb 1, 2017

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