How do I approach Coding & Algorithms interview questions?

Coding & Algorithms questions require understanding of core concepts and practice. PracHub provides solutions with explanations to help you master coding & algorithms interviews.

What difficulty level is this interview question?

This is a medium difficulty Coding & Algorithms question, commonly asked during Onsite rounds at Meta.

What role is this question designed for?

This question is commonly asked for Machine Learning Engineer candidates at Meta during technical interviews.

Compute the next lexicographic permutation

Last updated: Jun 27, 2026

Quick Overview

This question evaluates understanding of permutations and lexicographic ordering, in-place array manipulation, and algorithmic reasoning about time and space constraints, including handling duplicates and edge cases.

|Home/Coding & Algorithms/Meta

Compute the next lexicographic permutation