Top 50 clean code Interview Questions
The most frequently asked clean code questions across all roles and companies, ranked by real interview frequency. Updated daily.
Clean a list of records by trimming strings and removing null or empty fields while preserving record order.
Xccelerated
Act DigitalDebug and implement a function that returns the index of the first non-repeating character.
Dorman Products
ZendeskRecursively flatten nested JSON logs and group normalized records by a partition field for Delta ingestion.
DatabricksImplement a cancellable priority queue using a heap and hash map while preserving correct ordering.
The Boston Consulting GroupEscape HTML-sensitive characters in untrusted text to prevent markup injection using a single linear scan.
MicrosoftImplement a Python class that encapsulates list creation and appends mixed values through clear methods.
DeloitteBuild an extensible shape calculator using abstraction, inheritance, encapsulation, and polymorphism.
Bristol Myers SquibbRemove duplicate integers while preserving first-occurrence order using an optimized, modular linear-time approach.
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