Top 50 data parsing Interview Questions

Flatten nested JSON into path-value pairs using iterative depth-first traversal with O(n) time and controlled stack space.

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Fill missing regularly spaced time-series points using linear interpolation between known observations.

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Parse semicolon-separated IBM Instana alert labels into a dictionary using straightforward string splitting.

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Parse quoted key-value fields from incoming messages while handling duplicates, separators, and malformed input.

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Parse chronological asset events and produce a deduplicated, sorted package manifest using hash maps and sets.

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Parse a JSON string and recursively validate its types, required fields, ranges, and patterns against a supplied schema.

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