ZorixOS
11+ Baidu questions

Baidu interview questions and how to prepare

The questions candidates report from Baidu interviews, sorted by how often they come up, with difficulty and topics, plus original practice written in Baidu's interview style.

Practice Baidu questions free All companies

ZorixOS tracks 11 community-reported Baidu interview questions, drawn from an open-source dataset of real interview reports and sorted by how frequently each one comes up. Every question links to its source. Alongside them are 98 original ZorixOS practice questions written in Baidu's known interview style (not claimed as asked at Baidu), so you can rehearse the real format. Practice any of them out loud in a free AI mock interview tuned to Baidu.

Updated July 2026

Baidu interview questions candidates report

Community-reported from real Baidu interviews (open-source dataset), most-asked first. Showing 11. Each links to its source.

  1. Arithmetic Slices
    ArrayDynamic ProgrammingSliding Window
    Medium100% asked
  2. Arithmetic Slices II - Subsequence
    ArrayDynamic Programming
    Hard100% asked
  3. Binary Tree Maximum Path Sum
    Dynamic ProgrammingTreeDepth-First SearchBinary Tree
    Hard100% asked
  4. Design In-Memory File System
    Hash TableStringDesignTrie
    Hard100% asked
  5. Integer Replacement
    Dynamic ProgrammingGreedyBit ManipulationMemoization
    Medium100% asked
  6. Length of Longest Fibonacci Subsequence
    ArrayHash TableDynamic Programming
    Medium100% asked
  7. Longest Substring with At Least K Repeating Characters
    Hash TableStringDivide and ConquerSliding Window
    Medium100% asked
  8. Out of Boundary Paths
    Dynamic Programming
    Medium100% asked
  9. Search a 2D Matrix II
    ArrayBinary SearchDivide and ConquerMatrix
    Medium100% asked
  10. Split Array Largest Sum
    ArrayBinary SearchDynamic ProgrammingGreedy
    Hard100% asked
  11. Zuma Game
    StringDynamic ProgrammingStackBreadth-First Search
    Hard100% asked

Practice questions in Baidu's style

Original ZorixOS questions written the way Baidu interviews, so you rehearse the real format. Not claimed as asked at Baidu.

  1. Imagine you are building a new feature for Baidu Maps that allows users to plan multi-stop road trips. Describe the high-level system design, focusing on how you would handle real-time traffic updates and route recalculations for multiple stops.

    Software EngineerSystem DesignTests: Evaluates system design capabilities, ability to handle real-time data, and scalability considerations.

  2. Baidu's search engine handles billions of queries daily. If you observe a sudden spike in 5xx server errors for a specific search query category (e.g., real estate listings), how would you debug and identify the root cause?

    Software EngineerDebuggingTests: Assesses debugging skills, systematic problem-solving, and understanding of distributed systems.

  3. Consider Baidu Tieba, a popular online forum. How would you design a system to efficiently recommend relevant posts and communities to a user based on their browsing history and engagement patterns, considering the platform's large user base and content volume?

    Software EngineerSystem DesignTests: Tests understanding of recommendation systems, data processing at scale, and user behavior modeling.

  4. You're tasked with optimizing the performance of Baidu Cloud's object storage service. What are the key performance metrics you would track, and what strategies would you employ to improve latency and throughput?

    Software EngineerPerformance OptimizationTests: Evaluates knowledge of performance bottlenecks, optimization techniques, and cloud infrastructure.

  5. Baidu has a large number of images in its search results. How would you design a system to efficiently index and retrieve images, ensuring fast search response times and handling duplicate images?

    Software EngineerSystem DesignTests: Assesses design of large-scale indexing and retrieval systems, and understanding of image processing challenges.

  6. Describe the trade-offs between using a relational database versus a NoSQL database for storing user profile data for Baidu's various services (e.g., Baidu Baike, Baidu Tieba).

    Software EngineerData StorageTests: Tests understanding of database trade-offs and suitability for different data types and access patterns.

92+ more Baidu-style questions are in the free library, each practiceable live with adaptive follow-ups and an honest scorecard. Start free.

Keep exploring

Can you answer these out loud, under Baidu-style follow-ups?

The ZorixOS AI interviewer runs a Baidu-tuned mock interview: it asks these kinds of questions, digs into your answers, and scores you against a real hiring bar. Your first one is free.

Start your Baidu mock interview
Baidu Interview Questions (2026) | ZorixOS