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Coding Challenges
5,893 curated questions across every arena — browse by topic, then jump into a live 3-minute battle to put them to the test.
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8 challenges matching your filters
Clear topic filter- Multiple ChoiceBeginner
SRP: finding the second reason to change
architecturesolidsrp - Multiple ChoiceBeginner
LSP and equals/hashCode contract
architecturesolidlsp - Multiple ChoiceBeginner
Stable Dependencies Principle
coupling-metricsdependency-graphsolid - Multiple ChoiceBeginner
ISP and fat interfaces
ispsolidinterfaces - Code AnalysisBeginner
SRP: god class
architecturesolidsrp - Code AnalysisBeginner
LSP: equals/hashCode mismatch
architecturesolidlsp - Code AnalysisBeginner
ISP in a module interface
architecturesolidisp - Code AnalysisBeginner
Dependency inversion missing in service
architecturesoliddip
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