openai 的题目

• Social Network / Follow Graph
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• Infection Spread / Cellular Automata
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• Distributed Machine Cluster Count and Topology
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• Monster Battle System
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• Memory Allocator
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• GPU Credits / GPU Credit 2
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• Classifier with Noisy Annotators
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• Toy Language / Type Inference
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• Data Labeling Task Scheduler
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• Transformer Bug Hunt
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• NumPy Puzzle: 1-NN Vectorization → Wx+b Network
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• Durable Key-Value Store Serialization
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• Autograd / Manual Backprop + Hillis-Steele Scan
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• Streaming Entropy (numerical stability + online accumulation)
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• Chat Bot System Refactoring
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• IP Address / CIDR Iterator (5-part)
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• Shard Rebalance / Overlapping Key Range
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• Math Reasoning: Stopping Time / Las Vegas Algorithm
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• Version Dependency
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• Cross-Entropy Loss Implementation
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• Maximum-Score Grid Path with Limited Jumps
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• ModalLock and FairModalLock
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• Implement a CD Command
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• OpenSheet: Spreadsheet with Cell Dependencies
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• Sharded Matmul and Backprop Debugging
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• Resumable Iterator with Multi-Dimensional Support
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• Code Reading — 400-line PyTorch Refactor
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• In-Memory Database with SQL Operations
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• Time-Based Key-Value Store with Production Testing
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• Design Chess.com (Online Chess Game)
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• Design Sora / Video Generation Pipeline
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• Payment / Coffee-Shop Ordering (read the prompt!)
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• Design a Cloud IDE
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• Real-Time AI Product Feature
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• Mining Novel Data from Large Unlabeled Corpus
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• ChatGPT Enterprise (RAG ML System Design)
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• GPT-3 Playground - Full-Stack Architecture
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• Design an AI Chatbot System
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• Multi-Tenant CI/CD Workflow System
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• Slack
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• RAG / Search ML Design (oral)
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• Design Google Calendar
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• Design a URL Shortener
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• Design a Crossword Puzzle Solver
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• Webhook Delivery System
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• Points of Interest (POI) System / Yelp
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• HM BQ — Why OpenAI / AI Safety / AGI
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• Recruiter / HR Screen (BQ)
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• Engineering Management Fundamentals & Team Operations
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• Technical Deep Dive (slide-based)
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• Implement a Work Queue with Leases, Retries, and a Dead-Letter Queue
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• Versioned User Follow Graph with Snapshots
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• Snapshot Set
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• Topological Sort of Task Dependencies
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• Implement a Durable Key-Value Store with File Segmentation
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• In-Memory KV Store with Log-Based Recovery
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• Implement a Memory Allocator with First-Fit and Best-Fit
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• Friend Circles / Number of Provinces
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• Count Machines in a Cluster Tree and Recover Tree Topology
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• Sharded Matrix Multiplication and Backpropagation
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• Implement a Simple Memory Allocator with First-Fit and Best-Fit
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• Implement Masked Cross Entropy Loss with Label Smoothing
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• Maximum Falling Path with Limited Vertical Jumps and Bonus Scoring
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• In-Memory Memory Allocator with malloc/free, First-Fit and Best-Fit
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• Message Event Aggregation in a 5-Minute Sliding Window
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• Build a ChatGPT Chat Interface in an Existing iOS Project
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• Find the Incorrect Data Labeler
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• Minimum Time to Infect a Network
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• Restore Valid IPv4 Addresses
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• Plant Infection by Neighbor Count
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• Infection Spread with Immune Units and Expiring Contagiousness
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• Streaming Entropy with Online and Block-wise Updates
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• Resumable Iterator for List and File
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• Minimum Time to Infect All Plants
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• Reproduce Double Descent in Linear Regression
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• Implement malloc and free with First-Fit Allocation and Discuss Best-Fit Optimization
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• Cell Simulation / Conway's Game of Life
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• Design a Memory Allocator with Coalescing
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• Coding: Design a Distributed Rate Limiter with Persistence (Clock Skew, Redis Fallback)
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• Debug A/B Test Python Code (Metric Computation and Statistical Testing)
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• Basic SQL Querying (Filtering, Aggregation, Join, Window Functions)
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• Draw Paths / Strokes on a Set of Points
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• Machine Topology Reasoning (Topology / Dependency Graph)
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• Social Network Query/Computation (Graph-Based Social Problem)
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• Infection Spread on a Network (Graph Propagation)
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• Plant Infection (multi-part)
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• Infectious Disease Simulation / Containment (unspecified)
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• Human Labeling and Training a Classifier (ML Coding)
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• Monster Fighting (Multi-part)
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• Infectious Disease Simulation (Multi-part)
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• Implement 1-Nearest Neighbor (1NN) Classifier with NumPy; Rewrite as Neural Network Weights
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• Implement Matrix Multiplication Forward and Backward (Autograd-Style) in PyTorch
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• Debug a MiniGPT Transformer and Implement KV Cache (PyTorch)
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• Debug a Buggy Distributed Job Scheduler (Concurrency, Deadlocks, Rate Limiting, and Testing)
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• Implement an Async Message Bus for sendAsyncMessage (Simulation)
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• Distributed Topology Reconstruction via Async Messages
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• Count Nodes in a Distributed Tree via Async Messages
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• Design and implement an extensible ChatApp with bots (multi-channel support)
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• IP address to CIDR blocks (iterative/range-based)
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• Android Jetpack Compose rating card with comment validation and submission state
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• Design a Read/Write-Optimized Data Structure (General Coding, Non-ML)
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• ML Coding Interview: Math + Coding + Research Brainstorm (Notebook-based)
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• Implement Multi-Head Attention (NumPy or PyTorch)
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• Implement a Simple Key-Value Store from Scratch
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• Persistent Key-Value Store
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• Implement an in-memory TTL cache (optionally LRU)
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• Design an in-memory rate limiter (token bucket / sliding window)
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• Implement an in-memory key-value store with time-travel (versioned snapshots)
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• Numerically Stable Entropy from Logits (Batch and Streaming)
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• Balanced Sequence Generation for (AI, Human, Task) Tags with Prefix Constraints
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• In-place Matrix Multiplication vs Autograd; Out-of-place Forward/Backward; Scan-based Implementation
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• Infection Spread Simulation (Unspecified Variant)
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• Implement Unix-like `cd` Command (with Symlink Follow-up)
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• Chatbot Channel: Multi-bot Message Router
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• 2D Grid Infection (BFS Spread)
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• Dataset Exploration: Detect Label Noise and Choose Metrics
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• Implement Softmax Cross-Entropy Loss and Backprop (NumPy)
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• Implement and Debug a Minimal Neural Network Training Loop (PyTorch)
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• Implement 1-Nearest-Neighbor (1NN) and a Simple Neural Network in NumPy, then Modify to Use L1 Distance (Follow-up)
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• ML Coding: Human Annotation Data Filtering (Detect Bad Annotations)
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• Find Duplicate Files + Follow-ups on Optimization and Distributed Systems
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• Plant Infection Simulation (Multi-part)
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• GPU Credits Grants: create_grant / subtract / get_balance with expiry and FIFO-by-expire deduction
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• Optimal Turn-Based Monster Battle Simulation with Ordering and Revival Decisions
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• Incremental Task Scheduling for Human Labelers and Models with Daily Streaming Constraints
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• Monster Battle (Coding)
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• Machine Count and Network Topology Message Delivery (implement receiveMessage)
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• Implement a ChatGPT-like Chat UI in React (Streaming + Loading + Message Flow)
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• IP Address Iterator (Forward / Backward / CIDR)
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• Type a Language (Implement and Pass Test Cases)
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• Data Labeling Task Scheduler Construction
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• KV Store with Serialization (Basic Operations)
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• Cellular Automata Infection Simulation
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• Jetpack Compose: Build a UI Similar to Google Translate Home Screen
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• Identify Low-Quality Annotators Under Label Noise and Evaluate Classifier Improvement
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• Time-Aware Social Network Follow Graph with Recommendations
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• Resolve Python Dependency Versions
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• Debug a Transformer Implementation and Modify It into a Classifier
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• Infectious Disease Spread (Infection Propagation)
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• Coding Question (same as referenced post / Hack2Hire link)
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• Coding: Credit/Bug-free Implementation
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• Refactor a Chatbot Codebase
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• iOS Take-Home: Implement a Sample Project (UIKit/SwiftUI)
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• Social Network Follow/Unfollow With Snapshots
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• Debug and Improve a GRPO RL Training Loop for Language Models (PyTorch)
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• GPU Credits II (Modified): Balance Query Returns None When Subtract Fails
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• Implement an In-Memory Key-Value Store with Write-Ahead Logging for Crash Recovery
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• Implement a Minimal SQL-Like Query Engine Over an In-Memory Database
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• Infectious Disease (multi-part coding question)
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• Compute the Distribution of LLM Decoding Stopping Time and Build a Strategy Against Adversaries
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• Implement a KV Store with Shutdown/Restore
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• Infection Spread Problem
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• KV Store Implementation
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• General Coding Interview
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• Problem Prompt and ChatGPT Integration
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• Toy language problem
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• Image Classification with Noise Analysis
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• Chatbot Development
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• Design a System for Remote Devbox
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• IP Address Iterator
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• Pokémon Battle Simulation
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• ML Coding with NP and NN Layers
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• ML Debugging with Transformer Model
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• GPU Credit Calculator
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• ML Coding
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• ML Debugging
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• Crossword Puzzle Solver Service Design
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• Map Serialization and De-serialization
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• Toy Language Interpreter
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• CICD and GPU Utilization
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• GPU Credit Management System
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• Implement Basic SQL Features
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• Monster Duel
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• GPU Credit Allocation
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• Design a simple database class with insert and query methods
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• Design KV Store with File Serialization
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• Valid Parentheses with Redundancy Check
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• Implement Inference with Probability Using NumPy
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• Implement Node and Function Classes with Type Inference
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• Transformer Model Debugging
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• Excel Sheet Operation
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• CD Directory Navigation
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• CRUD Backend API and Debugging
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• Design a Simple iOS Application
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• Insert Interval
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• Challenges and Strategies in Transitioning Non-Profit to For-Profit
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• Scalable Real-Time Messaging System Design for Slack
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• Spreadsheet Implementation with Cycle Detection and Caching
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• Resumable List Iterator with Save and Restore Functionality
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• In-Memory Database with Multi-Condition Query and Ordering
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• Designing Scalable Enterprise Chat System Like Slack
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• Resumable Iterator, Unit Tests, Time-Based KV Store, and Concurrency
  类型：online_judge
• AccountBalance Class with Time-Based Grants and Spending
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• Maximize Rice Units Taken Without Emptying Piles Using DP
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• Multiprocessing Debugging for Neural Network Propagation
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• Persistent Key-Value Store with Accurate Serialization/Deserialization
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• Resumable 2D Iterator with Pause and Resume Functionality
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• Diagnosing and Fixing Transformer Model Training Performance Drop
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• In-Memory Key-Value Database CRUD Implementation
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