Validate a binary search tree.
Staff+Medium◆ Commonly asked
#tree#dfs
A staff backend loop. Fundamentals mattered as much as getting to an answer.
The loop · 5 rounds
Round 01 · 3 questions
Data structures & algorithms on a whiteboard or shared editor.
Round 02 · 1 question
Object-oriented / low-level design of a focused module.
Round 03 · 2 questions
High-level architecture of a large-scale system.
Round 04 · 1 question
Scope, ownership, and role-fit discussion with the manager.
Round 05 · 2 questions
Values, collaboration, and past-experience (STAR) questions.
◆ This experience is composed from commonly reported questions for this role and level. Real, individually-shared interviews will be layered in over time.