Katkat

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Ethos interview questions

1 practice questions in the style of Ethos's interviews, covering Coding & Algorithms.

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Ethos interview questions by the numbers

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Katkat has 1 Ethos interview questions. The largest topics are Coding & Algorithms (100%). By difficulty: 100% medium. The most common round is Online Assessment (100%).

Topics

Difficulty

  • Medium100% · 1

Interview rounds

  • Online Assessment100% · 1

Roles

  • Software Engineer100% · 1

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  • Find Array Elements Uniquely Determined by Known Range SumsMedium

    Given only the index ranges whose sums are known for a hidden integer array, list every position whose value is uniquely determined by those sums, or report -1 if none is. Tests reasoning about how overlapping and nested range sums combine, plus an efficient solution for 100,000 ranges.

    EthosSoftware EngineerCoding & AlgorithmsOnline Assessment

Ethos interview experiences

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  • Online Assessment on Recoverable Elements from Range-Sum QueriesEthos · Software Engineer · Online Assessment · Aug 2026

    Recoverable Elements from Range-Sum Queries You are given an unknown integer array A of length N, with elements indexed from 1 to N. You will receive Q range-sum queries. Each query contains two integers L and R, and gives you the sum of all elements of A from index L to index R. Your task is to use the given query information to find all the elements A[i] whose exact value can be uniquely determ…

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