Katkat

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Block (Square) interview questions

2 practice questions in the style of Block (Square)'s interviews, covering Coding & Algorithms, Data Manipulation (SQL/Python).

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Block (Square) interview questions by the numbers

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Katkat has 2 Block (Square) interview questions. The largest topics are Coding & Algorithms (50%) and Data Manipulation (SQL/Python) (50%). By difficulty: 100% medium. The most common round is Technical Screen (100%).

Topics

Difficulty

  • Medium100% · 2

Interview rounds

  • Technical Screen100% · 2

Roles

  • Data Scientist100% · 2

Showing 1–2 of 2 results

  • Build referral chains and detect cyclesMedium

    This question evaluates graph algorithm competencies such as referral-chain traversal, cycle detection, handling noisy input data, and reasoning about time and space complexity for efficient per-node computation.

    Block (Square)Data ScientistCoding & AlgorithmsTechnical Screen
  • Write left-join queries with tricky filtersMedium

    This question evaluates SQL data-manipulation skills including LEFT JOIN semantics, aggregation functions like COUNT(DISTINCT) and SUM, GROUP BY/HAVING logic, and date-window filtering for referral and order analytics.

    Block (Square)Data ScientistData Manipulation (SQL/Python)Technical Screen

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