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105+ Infosys questions

Infosys interview questions and how to prepare

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

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ZorixOS tracks 105 community-reported Infosys 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 78 original ZorixOS practice questions written in Infosys's known interview style (not claimed as asked at Infosys), so you can rehearse the real format. Practice any of them out loud in a free AI mock interview tuned to Infosys.

Updated July 2026

Infosys interview questions candidates report

Community-reported from real Infosys interviews (open-source dataset), most-asked first. Showing 60 of 105. Each links to its source.

  1. Maximum Good Subtree Score
    ArrayDynamic ProgrammingBit ManipulationTree
    Hard100% asked
  2. Transform Array by Parity
    ArraySortingCounting
    Easy100% asked
  3. Two Sum
    ArrayHash Table
    Easy100% asked
  4. Eat Pizzas!
    ArrayGreedySorting
    Medium98% asked
  5. Maximize the Minimum Game Score
    ArrayBinary SearchGreedy
    Hard98% asked
  6. Find Building Where Alice and Bob Can Meet
    ArrayBinary SearchStackBinary Indexed Tree
    Hard95% asked
  7. Find the Number of Subsequences With Equal GCD
    ArrayMathDynamic ProgrammingNumber Theory
    Hard93% asked
  8. Valid Parentheses
    StringStack
    Easy93% asked
  9. Minimum Reverse Operations
    ArrayBreadth-First SearchOrdered Set
    Hard93% asked
  10. Count the Number of Ideal Arrays
    MathDynamic ProgrammingCombinatoricsNumber Theory
    Hard91% asked
  11. Longest Substring Without Repeating Characters
    Hash TableStringSliding Window
    Medium89% asked
  12. Maximum Sum of Subsequence With Non-adjacent Elements
    ArrayDivide and ConquerDynamic ProgrammingSegment Tree
    Hard89% asked
  13. Best Time to Buy and Sell Stock
    ArrayDynamic Programming
    Easy87% asked
  14. Can Convert String in K Moves
    Hash TableString
    Medium86% asked
  15. Determine the Minimum Sum of a k-avoiding Array
    MathGreedy
    Medium86% asked
  16. Find the Minimum Possible Sum of a Beautiful Array
    MathGreedy
    Medium86% asked
  17. Largest Number After Mutating Substring
    ArrayStringGreedy
    Medium86% asked
  18. Longest Well-Performing Interval
    ArrayHash TableStackMonotonic Stack
    Medium86% asked
  19. Maximum Number of Consecutive Values You Can Make
    ArrayGreedySorting
    Medium86% asked
  20. Maximum Product After K Increments
    ArrayGreedyHeap (Priority Queue)
    Medium86% asked
  21. Maximum Segment Sum After Removals
    ArrayUnion FindPrefix SumOrdered Set
    Hard86% asked
  22. Minimum Addition to Make Integer Beautiful
    MathGreedy
    Medium86% asked
  23. Minimum Total Distance Traveled
    ArrayDynamic ProgrammingSorting
    Hard86% asked
  24. Number of Beautiful Integers in the Range
    MathDynamic Programming
    Hard86% asked
  25. Number of Nodes With Value One
    TreeDepth-First SearchBreadth-First SearchBinary Tree
    Medium86% asked
  26. Sort the People
    ArrayHash TableStringSorting
    Easy86% asked
  27. Stone Game VIII
    ArrayMathDynamic ProgrammingPrefix Sum
    Hard86% asked
  28. The Number of Beautiful Subsets
    ArrayHash TableMathDynamic Programming
    Medium86% asked
  29. Merge Sorted Array
    ArrayTwo PointersSorting
    Easy80% asked
  30. Next Permutation
    ArrayTwo Pointers
    Medium80% asked
  31. Maximum Subarray
    ArrayDivide and ConquerDynamic Programming
    Medium80% asked
  32. Palindrome Number
    Math
    Easy80% asked
  33. Remove Duplicates from Sorted Array
    ArrayTwo Pointers
    Easy80% asked
  34. Reverse String
    Two PointersString
    Easy80% asked
  35. Product of Array Except Self
    ArrayPrefix Sum
    Medium75% asked
  36. Trapping Rain Water
    ArrayTwo PointersDynamic ProgrammingStack
    Hard75% asked
  37. Merge Intervals
    ArraySorting
    Medium69% asked
  38. Valid Anagram
    Hash TableStringSorting
    Easy69% asked
  39. 3Sum
    ArrayTwo PointersSorting
    Medium69% asked
  40. Coin Change
    ArrayDynamic ProgrammingBreadth-First Search
    Medium69% asked
  41. Longest Common Prefix
    StringTrie
    Easy69% asked
  42. Reverse Integer
    Math
    Medium69% asked
  43. Rotate Array
    ArrayMathTwo Pointers
    Medium69% asked
  44. Spiral Matrix
    ArrayMatrixSimulation
    Medium69% asked
  45. Rotate Image
    ArrayMathMatrix
    Medium68% asked
  46. Second Highest Salary
    Database
    Medium68% asked
  47. Fibonacci Number
    MathDynamic ProgrammingRecursionMemoization
    Easy62% asked
  48. Generate Parentheses
    StringDynamic ProgrammingBacktracking
    Medium62% asked
  49. Group Anagrams
    ArrayHash TableStringSorting
    Medium62% asked
  50. Add Two Numbers
    Linked ListMathRecursion
    Medium61% asked
  51. Climbing Stairs
    MathDynamic ProgrammingMemoization
    Easy61% asked
  52. Gas Station
    ArrayGreedy
    Medium61% asked
  53. House Robber
    ArrayDynamic Programming
    Medium61% asked
  54. Kth Largest Element in an Array
    ArrayDivide and ConquerSortingHeap (Priority Queue)
    Medium61% asked
  55. Longest Palindromic Substring
    Two PointersStringDynamic Programming
    Medium61% asked
  56. Missing Number
    ArrayHash TableMathBinary Search
    Easy61% asked
  57. Number of Islands
    ArrayDepth-First SearchBreadth-First SearchUnion Find
    Medium61% asked
  58. Palindrome Partitioning
    StringDynamic ProgrammingBacktracking
    Medium61% asked
  59. Reverse Nodes in k-Group
    Linked ListRecursion
    Hard61% asked
  60. Reverse Words in a String
    Two PointersString
    Medium61% asked

These are the 60 most-reported of 105 tracked Infosys questions. Create a free account to drill the full set with solutions and an AI interviewer.

Practice questions in Infosys's style

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

  1. Imagine Infosys's Finacle core banking platform is experiencing intermittent latency issues during peak trading hours. Describe how you would debug a potential deadlock scenario in the transaction processing module. What tools and techniques would you employ to pinpoint the root cause?

    Software EngineerDebugging Distributed SystemsTests: Evaluates debugging skills in a complex, high-volume distributed system relevant to Infosys's offerings.

  2. Infosys is developing a new AI-powered intelligent automation platform for enterprise clients. Design a system architecture for this platform that can handle millions of concurrent requests, ensuring scalability, fault tolerance, and security. Consider the microservices involved, data storage, and inter-service communication.

    Software EngineerSystem Design for ScalabilityTests: Assesses system design capabilities for a scalable, secure, and fault-tolerant platform.

  3. A client is reporting that their custom-built application, hosted on Infosys's cloud infrastructure, is intermittently failing to respond. You suspect a resource contention issue. Write a short Python script or pseudocode to monitor CPU and memory utilization of specific processes associated with the client's application and alert if thresholds are exceeded.

    Software EngineerSystem Monitoring and Resource ManagementTests: Tests practical coding skills for system monitoring and resource management scenarios.

  4. Consider Infosys's Cobalt, a cloud-native ecosystem. If a user reports slow loading times for a specific module within a Cobalt-powered application, how would you approach diagnosing the performance bottleneck? Walk me through your thought process, from initial hypotheses to potential solutions.

    Software EngineerPerformance Debugging in Cloud EnvironmentsTests: Evaluates problem-solving and debugging skills in a cloud-native context relevant to Infosys's cloud offerings.

  5. We are building a new feature for Infosys's Nia platform that uses machine learning to predict customer churn for our banking clients. Given a dataset with customer demographics, transaction history, and interaction logs, write SQL queries to extract features such as 'average transaction amount in the last 90 days' and 'number of support tickets raised in the last 6 months'.

    Data ScientistSQL for Feature EngineeringTests: Assesses SQL proficiency for data extraction and feature engineering relevant to business problems.

  6. Infosys's Edge Services platform processes a large volume of IoT data. We want to evaluate the impact of a new data ingestion pipeline on the latency of downstream analytics. Design an A/B test to measure this impact. What metrics would you track, and how would you determine statistical significance?

    Data ScientistExperiment Design and AnalysisTests: Evaluates understanding of experimental design, metrics, and statistical analysis in a data-intensive context.

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

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Infosys Interview Questions (2026) | ZorixOS