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34+ Yahoo questions

Yahoo interview questions and how to prepare

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

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ZorixOS tracks 34 community-reported Yahoo 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 Yahoo's known interview style (not claimed as asked at Yahoo), so you can rehearse the real format. Practice any of them out loud in a free AI mock interview tuned to Yahoo.

Updated July 2026

Yahoo interview questions candidates report

Community-reported from real Yahoo interviews (open-source dataset), most-asked first. Showing 34. Each links to its source.

  1. LRU Cache
    Hash TableLinked ListDesignDoubly-Linked List
    Medium100% asked
  2. Meeting Rooms II
    ArrayTwo PointersGreedySorting
    Medium100% asked
  3. Top K Frequent Elements
    ArrayHash TableDivide and ConquerSorting
    Medium100% asked
  4. Contains Duplicate
    ArrayHash TableSorting
    Easy98% asked
  5. Largest Palindrome Product
    MathEnumeration
    Hard98% asked
  6. Maximum Depth of Binary Tree
    TreeDepth-First SearchBreadth-First SearchBinary Tree
    Easy98% asked
  7. Reverse Linked List
    Linked ListRecursion
    Easy98% asked
  8. Serialize and Deserialize Binary Tree
    StringTreeDepth-First SearchBreadth-First Search
    Hard98% asked
  9. Two Sum
    ArrayHash Table
    Easy98% asked
  10. Binary Number with Alternating Bits
    Bit Manipulation
    Easy95% asked
  11. Linked List Cycle
    Hash TableLinked ListTwo Pointers
    Easy95% asked
  12. Matrix Cells in Distance Order
    ArrayMathGeometrySorting
    Easy95% asked
  13. Maximum Distance in Arrays
    ArrayGreedy
    Medium95% asked
  14. Median of Two Sorted Arrays
    ArrayBinary SearchDivide and Conquer
    Hard95% asked
  15. Non-decreasing Subsequences
    ArrayHash TableBacktrackingBit Manipulation
    Medium95% asked
  16. Peeking Iterator
    ArrayDesignIterator
    Medium95% asked
  17. Roman to Integer
    Hash TableMathString
    Easy95% asked
  18. Word Break
    ArrayHash TableStringDynamic Programming
    Medium95% asked
  19. Combination Sum
    ArrayBacktracking
    Medium91% asked
  20. Evaluate Division
    ArrayStringDepth-First SearchBreadth-First Search
    Medium79% asked
  21. Find Peak Element
    ArrayBinary Search
    Medium79% asked
  22. Flatten Nested List Iterator
    StackTreeDepth-First SearchDesign
    Medium79% asked
  23. Longest Common Prefix
    ArrayStringTrie
    Easy79% asked
  24. Longest Repeating Character Replacement
    Hash TableStringSliding Window
    Medium79% asked
  25. Palindrome Number
    Math
    Easy79% asked
  26. Restore IP Addresses
    StringBacktracking
    Medium79% asked
  27. Search in Rotated Sorted Array
    ArrayBinary Search
    Medium79% asked
  28. Shortest Path in Binary Matrix
    ArrayBreadth-First SearchMatrix
    Medium79% asked
  29. Spiral Matrix
    ArrayMatrixSimulation
    Medium79% asked
  30. Subarray Sum Equals K
    ArrayHash TablePrefix Sum
    Medium79% asked
  31. Valid Parentheses
    StringStack
    Easy79% asked
  32. Validate Binary Search Tree
    TreeDepth-First SearchBinary Search TreeBinary Tree
    Medium79% asked
  33. Decode String
    StringStackRecursion
    Medium55% asked
  34. Word Search
    ArrayStringBacktrackingDepth-First Search
    Medium55% asked

Practice questions in Yahoo's style

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

  1. Imagine a Yahoo Mail user receives a flood of spam emails that are technically sophisticated and bypass current filters. How would you design a system to detect and mitigate these new types of spam at Yahoo's scale, considering the potential for false positives?

    Software EngineerSystem DesignTests: Evaluates ability to design scalable, fault-tolerant systems and handle complex, evolving threats.

  2. Yahoo Finance aggregates real-time stock data from various exchanges. If a latency issue causes stock prices to be stale for a subset of users in a specific region, how would you debug and resolve this problem, assuming you have access to logs and monitoring tools?

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

  3. Design a feature for Yahoo Search that helps users discover niche content or communities relevant to their interests, going beyond traditional keyword matching. Consider the technical challenges of indexing and ranking such content.

    Software EngineerCoding/ReasoningTests: Tests creativity in problem-solving, algorithmic thinking, and understanding of search technologies.

  4. Yahoo is considering an AI-powered summarization feature for articles on Yahoo News. Describe the architecture you'd propose to handle the real-time summarization of millions of articles daily, including considerations for model training, deployment, and latency.

    Software EngineerSystem DesignTests: Measures understanding of large-scale AI system design, MLOps, and real-time data processing.

  5. A user reports that their Yahoo Calendar invites are sometimes not delivered. How would you approach investigating this issue, considering potential causes from client-side to server-side infrastructure?

    Software EngineerDebuggingTests: Evaluates systematic approach to troubleshooting and understanding of email delivery systems.

  6. Write a SQL query to find the top 5 most active Yahoo Mail users (by number of emails sent) in the last 30 days, excluding any internal test accounts.

    Data ScientistSQLTests: Assesses proficiency in SQL for data retrieval and basic aggregation.

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

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Yahoo Interview Questions (2026) | ZorixOS