xai 的题目

• Twitter Insight Platform (CodeSignal Take-Home)
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• Distributed Matrix Multiplication — DP and FSDP
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• Resumable Iterator with Save / Restore State
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• Distributed Token-Bucket Rate Limiter
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• Flatten / Unflatten Nested Python Structure
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• Weighted LRU Cache
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• Twitter Spaces — Aggregate Active Hours
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• Checkers Game — Backend System Design
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• Radix Cache
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• Transactional Key-Value Store
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• Maximum Distinct Integers After ±k Offset
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• K-th Element on a Streaming Time Window
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• Durable KV Cache
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• GPU Node Group Test — Identify Bad Nodes
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• Mock-LLM Inference Engine — Dynamic Batching
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• Multithreaded BankAccount Race-Condition Bug Hunt
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• In-Memory Database — Levels 1–4 (TTL + Backup/Restore)
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• Multithreaded Integer Sort
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• Notification System — Push to Followers on New Post
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• Design a RAG System
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• Rate Limiter — Inbound + Outbound
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• Most Challenging Project + Why xAI
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• Agentic Workflow for 1-Hour Movie Generation
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• Process vs Thread (Verbal CS Fundamentals)
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• Code Review: Find Issues in an Input Field Implementation
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• Distributed Matrix Multiplication with Data Parallel and FSDP Simulation
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• Design a Restorable (Checkpointable) Iterator
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• Token Limiter
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• Minimum Time to Produce a Goal Dataset in a Data Pipeline (Parallel Tasks)
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• Unflatten: Refill a Nested Template Structure with Values from a Flat List
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• Flatten a Nested Python Structure (lists/dicts/tuples) into a List of Integers
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• Calculate Active Hours for Twitter Spaces
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• Research and Machine Learning Coding
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• 4-hour Take Home Project Task
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• kth element
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• Handwrite parallelized sort
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• Rate Limiter Design
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• KV Store Design
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• Multithread Sorting
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• In-Memory Database Implementation
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• Determine large rice bags
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• Twitter Insight Platform with Rate Limiting and Dockerization
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• Find the Most Common N-grams
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