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128+ Yandex questions

Yandex interview questions and how to prepare

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

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ZorixOS tracks 128 community-reported Yandex 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 75 original ZorixOS practice questions written in Yandex's known interview style (not claimed as asked at Yandex), so you can rehearse the real format. Practice any of them out loud in a free AI mock interview tuned to Yandex.

Updated July 2026

Yandex interview questions candidates report

Community-reported from real Yandex interviews (open-source dataset), most-asked first. Showing 60 of 128. Each links to its source.

  1. Longest Subarray of 1's After Deleting One Element
    ArrayDynamic ProgrammingSliding Window
    Medium100% asked
  2. Maximize Distance to Closest Person
    Array
    Medium100% asked
  3. String Compression
    Two PointersString
    Medium100% asked
  4. Summary Ranges
    Array
    Easy100% asked
  5. Merge Intervals
    ArraySorting
    Medium93% asked
  6. Subarray Sum Equals K
    ArrayHash TablePrefix Sum
    Medium93% asked
  7. Find K Closest Elements
    ArrayTwo PointersBinary SearchSliding Window
    Medium88% asked
  8. Longest Substring Without Repeating Characters
    Hash TableStringSliding Window
    Medium88% asked
  9. Longest Palindromic Substring
    Two PointersStringDynamic Programming
    Medium82% asked
  10. Valid Palindrome II
    Two PointersStringGreedy
    Easy80% asked
  11. Move Zeroes
    ArrayTwo Pointers
    Easy78% asked
  12. One Edit Distance
    Two PointersString
    Medium76% asked
  13. Interval List Intersections
    ArrayTwo PointersSweep Line
    Medium75% asked
  14. Longest Strictly Increasing or Strictly Decreasing Subarray
    Array
    Easy75% asked
  15. Isomorphic Strings
    Hash TableString
    Easy74% asked
  16. Line Reflection
    ArrayHash TableMath
    Medium73% asked
  17. Permutation in String
    Hash TableTwo PointersStringSliding Window
    Medium73% asked
  18. Number of Islands
    ArrayDepth-First SearchBreadth-First SearchUnion-Find
    Medium73% asked
  19. Valid Palindrome
    Two PointersString
    Easy72% asked
  20. Two Sum
    ArrayHash Table
    Easy71% asked
  21. Find All Anagrams in a String
    Hash TableStringSliding Window
    Medium70% asked
  22. Find the Prefix Common Array of Two Arrays
    ArrayHash TableBit Manipulation
    Medium70% asked
  23. Group Anagrams
    ArrayHash TableStringSorting
    Medium69% asked
  24. Insert Delete GetRandom O(1)
    ArrayHash TableMathDesign
    Medium69% asked
  25. Merge Sorted Array
    ArrayTwo PointersSorting
    Easy66% asked
  26. Container With Most Water
    ArrayTwo PointersGreedy
    Medium64% asked
  27. Find Duplicate Subtrees
    Hash TableTreeDepth-First SearchBinary Tree
    Medium64% asked
  28. Longest Substring with At Most K Distinct Characters
    Hash TableStringSliding Window
    Medium64% asked
  29. Merge k Sorted Lists
    Linked ListDivide and ConquerHeap (Priority Queue)Merge Sort
    Hard64% asked
  30. Perfect Squares
    MathDynamic ProgrammingBreadth-First Search
    Medium64% asked
  31. Search in Rotated Sorted Array
    ArrayBinary Search
    Medium64% asked
  32. Subarrays with K Different Integers
    ArrayHash TableSliding WindowCounting
    Hard64% asked
  33. Trapping Rain Water
    ArrayTwo PointersDynamic ProgrammingStack
    Hard64% asked
  34. Is Subsequence
    Two PointersStringDynamic Programming
    Easy63% asked
  35. Merge Two Sorted Lists
    Linked ListRecursion
    Easy63% asked
  36. Squares of a Sorted Array
    ArrayTwo PointersSorting
    Easy63% asked
  37. Design an ATM Machine
    ArrayGreedyDesign
    Medium61% asked
  38. Valid Parentheses
    StringStack
    Easy61% asked
  39. Max Consecutive Ones III
    ArrayBinary SearchSliding WindowPrefix Sum
    Medium58% asked
  40. Min Stack
    StackDesign
    Medium58% asked
  41. Binary Tree Right Side View
    TreeDepth-First SearchBreadth-First SearchBinary Tree
    Medium55% asked
  42. Lowest Common Ancestor of a Binary Tree
    TreeDepth-First SearchBinary Tree
    Medium55% asked
  43. LRU Cache
    Hash TableLinked ListDesignDoubly-Linked List
    Medium55% asked
  44. Median of Two Sorted Arrays
    ArrayBinary SearchDivide and Conquer
    Hard55% asked
  45. Product of Array Except Self
    ArrayPrefix Sum
    Medium55% asked
  46. Symmetric Tree
    TreeDepth-First SearchBreadth-First SearchBinary Tree
    Easy55% asked
  47. Reconstruct Itinerary
    ArrayStringDepth-First SearchGraph Theory
    Hard53% asked
  48. Binary Tree Maximum Path Sum
    Dynamic ProgrammingTreeDepth-First SearchBinary Tree
    Hard53% asked
  49. Design Hit Counter
    ArrayBinary SearchDesignQueue
    Medium53% asked
  50. Generate Parentheses
    StringDynamic ProgrammingBacktracking
    Medium53% asked
  51. Count Substrings Without Repeating Character
    Hash TableStringSliding Window
    Medium50% asked
  52. Maximum Subarray
    ArrayDivide and ConquerDynamic Programming
    Medium47% asked
  53. Number of Recent Calls
    DesignQueueData Stream
    Easy47% asked
  54. Remove Element
    ArrayTwo Pointers
    Easy47% asked
  55. Add Two Numbers
    Linked ListMathRecursion
    Medium46% asked
  56. Basic Calculator II
    MathStringStack
    Medium46% asked
  57. Can Place Flowers
    ArrayGreedy
    Easy46% asked
  58. Reverse Linked List
    Linked ListRecursion
    Easy46% asked
  59. Destination City
    ArrayHash TableString
    Easy44% asked
  60. Longest Repeating Character Replacement
    Hash TableStringSliding Window
    Medium44% asked

These are the 60 most-reported of 128 tracked Yandex questions. Create a free account to drill the full set with solutions and an AI interviewer.

Practice questions in Yandex's style

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

  1. Imagine Yandex Taxi is experiencing intermittent latency spikes in its routing service, affecting a significant portion of users in Moscow. How would you debug this issue, considering the scale of Yandex Taxi's operations and its reliance on real-time data?

    Software EngineerDebugging and System ReliabilityTests: Evaluates ability to troubleshoot complex distributed systems under pressure and scale.

  2. Design a system to recommend relevant Yandex Music playlists to users based on their listening history, current mood (inferred or explicit), and time of day. Consider personalization at scale and how to handle cold-start problems for new users.

    Software EngineerSystem DesignTests: Assesses system design skills, particularly in recommendation engines and handling large user bases.

  3. Given a scenario where Yandex Mail is seeing a sudden increase in spam complaints for a specific type of email, what steps would you take to identify the source and mitigate the problem? Consider techniques like anomaly detection and rapid response.

    Software EngineerDebugging and Anomaly DetectionTests: Tests practical debugging skills in a real-world application context.

  4. Yandex Search indexes billions of web pages. How would you design a distributed system for efficient crawling and indexing of new content, ensuring freshness and relevance while managing resource constraints?

    Software EngineerSystem DesignTests: Evaluates understanding of large-scale indexing systems and distributed computing principles.

  5. You are building a new feature for Yandex Maps that allows users to report real-time traffic incidents. Describe the data model, API design, and potential challenges (e.g., conflict resolution, data validation) for this feature.

    Software EngineerAPI Design and Data ModelingTests: Assesses ability to design robust APIs and data structures for a dynamic application.

  6. Consider the Yandex Go ride-hailing service. How would you implement a mechanism to ensure fair driver-rider matching, especially during peak demand hours in densely populated areas, while optimizing for driver earnings and rider wait times?

    Software EngineerAlgorithm Design and OptimizationTests: Tests algorithmic thinking and optimization skills in a high-stakes, real-time environment.

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

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Yandex Interview Questions (2026) | ZorixOS