January 2026 | 10 New Questions Added (Algorithm, System Design, and Practical Format)

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Overview

Starting January 8, 2026, we have added a total of 10 new questions across algorithm, system design, and practical (project) formats. As the first update of 2026, we have expanded our lineup with questions covering diverse tech stacks and difficulty levels.

What's New

Algorithm (1 question)

  • Printer Job Management System: A problem involving the management and control of print jobs using a priority queue.

System Design (3 questions)

  • Rate Limiter: A design problem for implementing a rate limiter to control API request limits.
  • Online Coding Exam Platform: A system design problem for a platform that provides coding exams.
  • Designing Migration from Monolith to Microservices: A design problem for incrementally migrating an existing monolithic architecture to microservices.

Practical Format (6 questions)

  • CRUD API Implementation (5 languages): A problem to implement a web API with basic CRUD operations. Multiple major programming languages are supported.
  • User Filter Feature Implementation (2 languages): A problem to implement a backend feature that filters users based on specified conditions.

Notes

The added questions are available for use immediately. For details on the questions, please check the question list on the test creation screen.