OJ Validator

The oj-validator tool provides automated validation of programming solutions by comparing program outputs against predefined test cases across common languages. It is designed for students, instructors, and development teams seeking reproducible evaluation without local execution setup.
Conceptually, the tool executes user-submitted code in a sandbox, captures output, and compares it to expected results using configurable matching rules (exact or tolerant). It reports per-test results, diffs, and a summary pass rate, helping identify where solutions diverge and why.
Unique value lies in its combination of multi-language support, customizable checkers, and structured output suitable for integration with learning platforms and automated assessment pipelines. Core features include test plan import, per-test metrics, resource usage reporting, and optional custom checkers for domain-specific validation. Use cases include homework validation, coding interviews, classroom assessments, and CI-like validation for learner projects. The tool emphasizes deterministic feedback and traceability, enabling educators to audit evaluation behavior and students to iterate efficiently.