TL;DR — Online Code Judge

Design an online code judge system like LeetCode or HackerRank that allows users to submit code solutions, executes them against test cases in a sandboxed environment, and returns results (pass/fail, runtime, memory usage) within seconds. The system must handle thousands of concurrent submissions during contest peaks. Key features: Submit code in 10+ programming languages. Execute against hidden test cases with time and memory limits.

MEDIUM45 min

Online Code Judge

sandboxed-executionqueuecontainerizationrate-limitingtest-cases

Key Points

Submit code in 10+ programming languages
Execute against hidden test cases with time and memory limits
Return verdict: Accepted, Wrong Answer, Time Limit Exceeded, Memory Limit Exceeded, Runtime Error, Compilation Error

Key Constraints

Daily submissions

Peak submissions/sec

~2,000

Supported languages

15+

Hints (0/3)

Canvas

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Online Code Judge

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Intermediate45 min read+100 XP

TL;DR — Online Code Judge

MEDIUM45 min

Online Code Judge

sandboxed-executionqueuecontainerizationrate-limitingtest-cases

Key Points

Submit code in 10+ programming languages
Execute against hidden test cases with time and memory limits
Return verdict: Accepted, Wrong Answer, Time Limit Exceeded, Memory Limit Exceeded, Runtime Error, Compilation Error

Key Constraints

Daily submissions

Peak submissions/sec

~2,000

Supported languages

15+

Hints (0/3)

Canvas

Build your design

Drag components from the palette to build your solution for "Online Code Judge"