Build with AI tools and verify normal, boundary, and failure cases. Choose practice or a timed exam.
Level 3
Advanced · Structure and efficiency
Build with AI and verify your work. Practice real-world, algorithm and AI systems problems, then take a timed challenge.
AI Native record
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- Practice
Dependency execution order
Produce a valid execution order and detect cycles.
AlgorithmsLevel 390 min - Practice
Lowest-cost routes
Find minimum reachable costs in a directed graph.
AlgorithmsLevel 390 min - Practice
LRU cache simulator
Implement a capacity-limited cache that tracks recency.
BackendLevel 390 min - Practice
Sliding-window rate limiter
Limit requests within each user’s sliding time window.
ReliabilityLevel 390 min - Practice
Repair an expiring cache
Fix expiration boundaries, updates, and recency in an existing cache.
Bug repairLevel 390 min - Practice
Optimize AI context budgets
Maximize context priority under a token budget.
AI & RAGLevel 390 min - Practice
Rank vector retrieval results
Rank cosine similarity with zero vectors and stable ties.
AI & RAGLevel 390 min - Practice
Chunk overlapping RAG tokens
Preserve overlap and correctly stop at the final chunk.
AI & RAGLevel 375 min - Practice
Build a circuit breaker
Track consecutive failures and exact cooldown boundaries.
ReliabilityLevel 390 min - Practice
Compute rolling medians
Maintain sliding medians for odd and even windows.
AlgorithmsLevel 390 min