Katkat

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TCS interview questions

2 practice questions in the style of TCS's interviews, covering Analytics & Experimentation, Coding & Algorithms.

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TCS interview questions by the numbers

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Katkat has 2 TCS interview questions. The largest topics are Analytics & Experimentation (50%) and Coding & Algorithms (50%). By difficulty: 50% medium and 50% hard. The most common round is Technical Screen (100%).

Topics

Difficulty

  • Medium50% · 1
  • Hard50% · 1

Interview rounds

  • Technical Screen100% · 2

Roles

  • Data Scientist100% · 2

Showing 1–2 of 2 results

  • Compare Tableau blending, joins, and filtersHard

    This question evaluates a candidate's competency in Tableau data integration and visualization, specifically assessing understanding of joins versus blends, filter order of operations, aggregation and null-handling behavior, level-of-detail impacts, and cross-database/calculation limitations.

    TCSData ScientistAnalytics & ExperimentationTechnical Screen
  • Find duplicates in a list efficientlyMedium

    This question evaluates a candidate's ability to design efficient algorithms for duplicate detection, occurrence counting, and preserving first-occurrence order while reasoning about time and space complexity across in-memory, in-place, and streaming data scenarios.

    TCSData ScientistCoding & AlgorithmsTechnical Screen

TCS interview experiences

All 5 →
  • TCS Software Engineer Interview Experience: Long fresher-oriented timelineTCS · Software Engineer · Jul 2026

    After applying online, the TCS process stretched close to 6 to 12 months, though it was organized once underway. It moved from technical coding to an advanced coding/problem-solving round, then a managerial discussion of my technical experience and projects, and finally HR topics: compensation, notice period, policies, and next steps. The NQT exam was important for shortlisting. My listed slot wa…

  • TCS Software Engineer Interview Experience: long onsite technical and SQL dayTCS · Software Engineer · Onsite · Jul 2026
    Rejected

    I waited in a hall while candidates were called one at a time, then entered a technical round based directly on my CV. I was asked at least one DSA question, so the interview tested both fundamentals and problem solving. The day was long and exhausting. The format I recall had a technical segment first, followed by coding and SQL queries, and interviewers would help when I got stuck. It ran from…

  • TCS Software Engineer interview: incomplete AVL tree and a Digital-role offerTCS · Software Engineer · Technical Screen · Jul 2026
    Offer

    After the recruiter call, I sat for the TCS Prime interview. It was focused and structured, lasting about 40 to 50 minutes. It covered DSA, core programming, my projects, and Python OOP. The technical section began with an AVL-tree coding task. I had to build an AVL tree from scratch with insert, delete, search, and LL, RR, LR, and RL rotations. I could not finish the implementation completely, a…

  • TCS Software Engineer interview: numeric aptitude questions instead of engineering discussionTCS · Software Engineer · Other · Jul 2026

    My TCS AI interview felt more like a broad numeric and aptitude round than a technical conversation. The mock-test setup mixed numeric and aptitude questions. I kept thinking about the mismatch between what I had prepared from my experience and why so much time went to the numeric part. The questions were straightforward enough, but the flow did not feel connected to actual engineering work. Ever…

  • TCS Systems Engineer interview: priority NQT and Java-focused Prime interviewTCS · Systems Engineer · Technical Screen · Jul 2026

    I went through an on-campus priority NQT process. I had to solve two coding questions before reaching the Prime interview, so the NQT felt like a gatekeeper. The technical interview focused mostly on Java, especially Java OOP, Spring Boot, and SQL. There was also an expectation that I could code through multiple test cases. The process did not rely only on theory. It put weight on solving enough…

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