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Top 50 code analysis Interview Questions

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

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CodingStart here. 46 questions + 2 drills · ~697 min
Debugging ApproachEasy
Practice

Debug and implement a function that returns the index of the first non-repeating character.

Hash Tablescode analysisStackDorman ProductsZendesk
Fix Issues Across Security, Performance, ObservabilityHard
Practice
Recently asked

Identify and fix five bugs in a Python codebase, balancing security, performance, and observability under time pressure.

code analysisDevOpsalertsSpeechify
Refactor Using Design PatternsHard
Practice
Recently asked

Refactor a code repository by removing unused members and centralizing object creation with factory providers.

code analysisCodingFrameworksSpeechify
Debug SwiftUI State and Combine Memory IssuesHard
Practice
Recently asked

Repair a SwiftUI-style state model so updates happen on the main thread, navigation preserves state, and Combine coordinators do not leak.

code analysisasync processingFrameworksSpeechify
SSML Parsing and Unit TestsHard
Practice
Recently asked

Parse SSML markup and transform it into the expected spoken text output.

code analysisfunction implementationfunctionsSpeechify
Review Cryptography UsageMedium
Practice
Recently asked

Use a hash set to identify application cryptography configurations that are not approved.

code analysisCodingMathMicrosoft
Bug in Bubble SortMedium
Practice

Fix a Bubble Sort indexing bug, analyze its complexity, and replace it with Python's faster Timsort.

code analysisArraysAlgorithmsGoogle
Debug and Fix Provided CodeMedium
Practice

Identify bugs in a broken function, then correct it while preserving the intended behavior.

code analysisCodingclean codeJPMorganChase
SQL Coding Question CountMedium
Practice
Practice drill

Count 0 and 1 sensor readings by Bosch building using a CTE, LEFT JOIN, and conditional aggregation.

CodingpythonBosch Building Technologies
Writing SAS Code Under PressureMedium
Practice
Practice drill

Identify missing, unexpected, duplicate, and inconsistent derived records using PostgreSQL validation queries.

Codingdata accuracydata verificationCCytel Inc
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More topics4 questions · ~59 min
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Hands-on SQL practiceWrite and run real queries in the editor. 1 drill · ~10 min
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.