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Updated weekly · Last refresh Sep 13

Top 50 csv parsing Interview Questions

The most frequently asked csv parsing questions across all roles and companies, ranked by real interview frequency. Updated daily.

50questions
~13htotal time
41companies covered
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1
CodingStart here. 38 questions · ~587 min
Transform JSON Logs to TablesMedium
Practice
Recently asked

Recursively flatten nested JSON logs into consistently shaped tabular rows with deterministic columns.

json parsingData StructurespythonAmazon Web Services
Parse User Action LogsEasy
Practice
Recently asked

Parse comma-separated user action logs into structured records while preserving input order.

CodingparsingArraysWhatnot
City Names and Minimum DistanceMedium
Practice

Parse city distances, find the minimum, and emit every pairwise absolute difference in input order.

ArraysAlgorithmscsv parsingGeneral Motors (GM)
Efficient Error Code ParsingMedium
Practice

Parse log lines in one pass and count requested Micron machine error codes using a set and hash map.

Hash TablesaggregationStringsMicron Technology
Session Counts from Log FileMedium
Practice

Parse log lines and aggregate login events into session counts for each user.

aggregationAlgorithmscsv parsingGoogle
Parse String Into FieldsMedium
Practice

Parse comma-separated key-value fields while preserving commas and escaped quotes inside quoted values.

Hash TablesArraysStringsDropbox
Log Parser in PythonMedium
Practice

Parse structured log lines, ignore malformed entries, and aggregate valid records by severity.

Codingedge casescsv parsingApple
Count Sessions from Log File (Code)Medium
Practice

Parse chronological log lines and count user sessions using a hash map and inactivity threshold.

aggregationAlgorithmscsv parsingGoogle
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2
SQL & Data Manipulation9 questions + 3 drills · ~169 min
3
Pipelines3 questions · ~46 min
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