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Design an elevator control system

Last updated: Mar 29, 2026

Quick Overview

This question evaluates skills in software architecture, algorithm design, real-time systems, concurrency, fault tolerance, scheduling, and safety constraints specific to multi-elevator control systems.

  • Medium
  • Google
  • Coding & Algorithms
  • Software Engineer

Design an elevator control system

Company: Google

Role: Software Engineer

Category: Coding & Algorithms

Difficulty: Medium

Interview Round: Technical Screen

Design the software for a multi-elevator control system in a high-rise building. Specify classes, scheduling algorithms for car assignments, handling peak traffic, fairness, fault tolerance, and safety constraints. Consider real-time constraints and a simulation and testing strategy.

Quick Answer: This question evaluates skills in software architecture, algorithm design, real-time systems, concurrency, fault tolerance, scheduling, and safety constraints specific to multi-elevator control systems.

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Google
Sep 6, 2025, 12:00 AM
Software Engineer
Technical Screen
Coding & Algorithms
5
0

Design the software for a multi-elevator control system in a high-rise building. Specify classes, scheduling algorithms for car assignments, handling peak traffic, fairness, fault tolerance, and safety constraints. Consider real-time constraints and a simulation and testing strategy.

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