uber 的题目

• OA: Jump Game with Prime-3 Steps
  类型：qbank
• Phone Screen / Onsite: Meeting Room Scheduler
  类型：qbank
• Phone Screen: Find Robot Position from Blocker Distances
  类型：qbank
• Onsite OOD: Multi-Level Parking Lot
  类型：qbank
• Phone Screen: Longest Subarray with Bounded Diff
  类型：qbank
• Phone Screen: First Customer Who Visited Only Once
  类型：qbank
• Phone Screen: Rate Limiter (Coding + Trade-offs)
  类型：qbank
• OA: Splash Zone / Balls Connection
  类型：qbank
• OA: Maximize Pipeline Throughput
  类型：qbank
• Phone Screen: Minimize a Convex Function
  类型：qbank
• Onsite OOD / Coding: Uber Eats Cart & Pricing Engine
  类型：qbank
• Phone Screen: Word Search on Straight 8-Direction Lines
  类型：qbank
• MLE Onsite: ML Coding from Scratch (Regression / Markov / Facility)
  类型：qbank
• Phone Screen: Number of Islands (Plain and Streaming)
  类型：qbank
• Phone Screen: Service Dependency Topological Order
  类型：qbank
• Onsite Coding: Minesweeper (LC 529)
  类型：qbank
• OOD Counter Class
  类型：qbank
• Word Search
  类型：qbank
• Spatial Quadtree: Insert and Range Query
  类型：qbank
• Compare Two Structs / Classes for Equality
  类型：qbank
• Serialize / Deserialize Binary Tree with N-ary Follow-up
  类型：qbank
• Rotate Image In Place
  类型：qbank
• Word Break
  类型：qbank
• Sliding Window Maximum
  类型：qbank
• Median of Two Sorted Arrays
  类型：qbank
• Versioned Social Network with Snapshots
  类型：qbank
• OOD: Random Bingo Card Generator
  类型：qbank
• Leftmost Column with At Least a One
  类型：qbank
• Maximum Number of Points from Grid Queries
  类型：qbank
• Last-Click Attribution Tracker
  类型：qbank
• Fill Dashes with Nearest Letter
  类型：qbank
• Earliest Time to Connect All Riders
  类型：qbank
• Seat Assignment / Exam Room
  类型：qbank
• Merge Step Functions of (timestamp, value) Pairs
  类型：qbank
• Rotting Oranges
  类型：qbank
• Exclusive Time of Functions
  类型：qbank
• Number of Ways to Wear Different Hats to Each Other
  类型：qbank
• Minimum Knight Moves
  类型：qbank
• Toy Order Completion Analysis
  类型：qbank
• Active Couriers Timeline
  类型：qbank
• Customer Revenue and Referral Tracking
  类型：qbank
• Count Paths That Can Form a Palindrome in a Tree
  类型：qbank
• Checking Existence of Edge Length Limited Paths
  类型：qbank
• Vertical Order Traversal of a Binary Tree
  类型：qbank
• Time Based Key-Value Store
  类型：qbank
• Shortest Word Distance
  类型：qbank
• Zero Array Transformation
  类型：qbank
• Lowest Common Ancestor of a Binary Tree
  类型：qbank
• Shortest Bridge
  类型：qbank
• Word Search II
  类型：qbank
• Evaluate Division
  类型：qbank
• N-ary Tree Level Order Traversal
  类型：qbank
• Cheapest Flights Within K Stops
  类型：qbank
• Design Hit Counter
  类型：qbank
• K Shuttle Pickup Locations
  类型：qbank
• Sqrt(x)
  类型：qbank
• Palindrome Ancestor Path Queries
  类型：qbank
• Binary Tree Longest Consecutive Sequence II
  类型：qbank
• Top K Frequent Elements
  类型：qbank
• My Calendar I
  类型：qbank
• Interval List Intersections
  类型：qbank
• Making a Large Island
  类型：qbank
• Number of Ways to Earn Points
  类型：qbank
• Isomorphic Strings
  类型：qbank
• OA: Round-Trip Mission Schedule
  类型：qbank
• Phone Screen: Bus Routes (LC 815)
  类型：qbank
• Phone Screen: Nested Add/Sub Expression Evaluator
  类型：qbank
• Number of Islands II (Dynamic Union-Find)
  类型：qbank
• Construct Quad Tree
  类型：qbank
• OA: Minimum Edge Reversals from Every Root
  类型：qbank
• Phone Screen: Tennis Rounds — Print Round Winners
  类型：qbank
• VO: AI-Assisted Coding / Debug Round (HackerRank IDE + AI)
  类型：qbank
• Kth Smallest Element in a BST
  类型：qbank
• OA: Final Prices with Special Discount (Sum + Unsold Indices)
  类型：qbank
• OA: Shortest Subarray with At Least K Distinct
  类型：qbank
• OA: Minimum Operations to Reduce N to 0 (±2^i)
  类型：qbank
• Phone Screen: Squares of a Sorted Array
  类型：qbank
• Letter Combinations of a Phone Number
  类型：qbank
• Best Time to Buy and Sell Stock
  类型：qbank
• Phone Screen: Alien Dictionary (LC 269)
  类型：qbank
• OA: Maximum Items by Budget with Prefix Sums
  类型：qbank
• OA: Stairs vs Elevator Energy Trade-off
  类型：qbank
• OA: Permutation Prefix Balanced (1..k Subarray Check)
  类型：qbank
• Onsite System Design: Driver Location Heatmap
  类型：qbank
• Onsite System Design: Top-K Popular Items (Restaurant / Search)
  类型：qbank
• MLE Onsite: ML System Design (Recommendation / Feed Ranking / ETA)
  类型：qbank
• Design a Stock Price Alert Notification System
  类型：qbank
• Onsite System Design: App User Behavior Data Platform
  类型：qbank
• Fraud Detection
  类型：qbank
• Onsite System Design: Daily Puzzle / Submission Scoring
  类型：qbank
• Design an Online Shopping Cart
  类型：qbank
• Design a Pickup Area Driver Queue
  类型：qbank
• Onsite System Design: Rider-Driver Matching
  类型：qbank
• Design Messenger
  类型：qbank
• Uber Eats Search
  类型：qbank
• Onsite BQ + Hiring Manager + Project Deep-Dive
  类型：qbank
• Bar Raiser: Architecture, Influence, and Values
  类型：qbank
• Staff (BPS) Round: Scope & Impact + Architecture
  类型：qbank
• Scientist Onsite: Experiment Design (Switchback + CI Interpretation)
  类型：qbank
• Design an In-Memory File System with Recursive Wildcards
  类型：online_judge
• Meeting Rooms II
  类型：online_judge
• Text Justification
  类型：online_judge
• Meeting Scheduler: Minimum Number of Rooms
  类型：online_judge
• Minesweeper Board Update
  类型：online_judge
• Implement a YAML Parser
  类型：online_judge
• Minimum Number of Refueling Stops
  类型：online_judge
• Longest Stable Subarray
  类型：online_judge
• K-th Employee Receiving Data
  类型：online_judge
• Last Truck to Leave a Lane
  类型：online_judge
• Minimum Delivery Cost Between Cities
  类型：online_judge
• Sort Clothing Sizes
  类型：online_judge
• Concurrent File Downloader with Request Coalescing
  类型：online_judge
• Word Search
  类型：online_judge
• First Unique Number
  类型：online_judge
• Thread-safe Token Bucket Rate Limiter
  类型：online_judge
• Implement a Quadtree for Geospatial Point Storage and Range Query
  类型：online_judge
• Group Anagrams
  类型：online_judge
• Compare Two Structs or Classes for Equality
  类型：online_judge
• The Earliest Moment When Everyone Become Friends
  类型：online_judge
• Robot Bounded In Circle
  类型：online_judge
• Serialize and Deserialize Binary Tree, then Extend to N-ary Tree
  类型：online_judge
• First Unique User in a Stream
  类型：online_judge
• Snapshot Social Network Follow System
  类型：online_judge
• Design Calendar Booking System
  类型：online_judge
• Basic Calculator II
  类型：online_judge
• Number of Islands II
  类型：online_judge
• Bus Routes
  类型：online_judge
• Minimum Triggers to Absorb All Balls
  类型：online_judge
• Maximize Pipeline Throughput With Budgeted Scaling
  类型：online_judge
• Leftmost Column with at Least a One
  类型：online_judge
• Total Cost to Convert All Substrings into Palindromes
  类型：online_judge
• Prime-Step Jump Game (Reachability with Prime-Length Jumps)
  类型：online_judge
• Maximize Pipeline Throughput Under Budget
  类型：online_judge
• Replace dashes with nearest letter (tie-break by lexicographical order)
  类型：online_judge
• Earliest Timestamp When All Users Become Connected (Ride Sharing Logs)
  类型：online_judge
• React Parking Lot System
  类型：online_judge
• LeetCode 380
  类型：online_judge
• Tournament Results by Player Ranks
  类型：online_judge
• LLD: Build Splitwise (Write Running Code in 60 Minutes)
  类型：online_judge
• Math + Logic Heavy DSA Problem (Onsite Coding)
  类型：online_judge
• Heap-based DSA Question (Business Phone Screen)
  类型：online_judge
• OA: Two LeetCode Medium–Hard DSA Problems
  类型：online_judge
• Implement / Build a QuadTree for a 2D grid with general values (not just 0/1)
  类型：online_judge
• Design a TinyURL service (encode/decode)
  类型：online_judge
• Assign seats to maximize distance to nearest occupied seat (online, no rearrangement)
  类型：online_judge
• Design an LRU Cache
  类型：online_judge
• Word Search in a Straight Line (8 Directions, No Turns)
  类型：online_judge
• Minesweeper Board Generation and Rendering
  类型：online_judge
• Word Search (Grid DFS Backtracking)
  类型：online_judge
• Implement CLIP-Style Symmetric Contrastive Loss (Image-Text)
  类型：online_judge
• Add/Sub Calculator with String Verification Follow-up
  类型：online_judge
• First Unique IP Hitting the Server (Streaming)
  类型：online_judge
• Online Clustering for a Number Stream
  类型：online_judge
• Next Greater Palindrome Number
  类型：online_judge
• Schedule Meeting / Meeting Scheduler (interval scheduling with updates and deletions)
  类型：online_judge
• Design an In-Memory Queue (Tradeoffs: Clearing, Background Cleanup, Stale Data)
  类型：online_judge
• Pipeline Throughput Maximization Under Budget (Binary Search)
  类型：online_judge
• Jump Game with Prime-Step Rule (DP)
  类型：online_judge
• Top-K Using a Priority Queue (Phone Screen)
  类型：online_judge
• Compute the CDF from a Normal Distribution PDF
  类型：online_judge
• Choose a Root to Minimize Edge Reversals (Make All Edges Point Outward)
  类型：online_judge
• Balanced Prefix Set in a Permutation
  类型：online_judge
• Zero Array After Ordered Range Decrements (Independent Per Index)
  类型：online_judge
• Word Search II
  类型：online_judge
• Construct a Quad Tree
  类型：online_judge
• Visitors Visited Exactly Once As Of a Timestamp (OOD / Time-indexed design)
  类型：online_judge
• ML Coding: Logistic Regression from Scratch
  类型：online_judge
• Two-Pointer Array/List Problem (from 1point3acres link)
  类型：online_judge
• Street (Line) with the Most Stations
  类型：online_judge
• Insert Interval / Merge Intervals with a New Interval
  类型：online_judge
• Number of Islands
  类型：online_judge
• Add Two Piecewise-Constant Time Series
  类型：online_judge
• Minimum Knight Moves on an n x n Board (Bounded Grid Variant)
  类型：online_judge
• Minimum Triggers to Absorb All Balls (Connected Components by Row/Column Within Distance)
  类型：online_judge
• Maximize Pipeline Throughput Under Budget
  类型：online_judge
• Pandas GroupBy Aggregation on Multiple DataFrames
  类型：online_judge
• Reachability with restricted backward moves and prime-step jumps (digit contains 3)
  类型：online_judge
• Connectivity Queries on Dynamic Components (Union-Find)
  类型：online_judge
• Reach End with Steps of 1 or Prime-Ending-in-3 Steps (DP)
  类型：online_judge
• Generate a Random Minesweeper Grid with N Mines
  类型：online_judge
• Nearest Exit in a 2D Grid (BFS)
  类型：online_judge
• Minimum Moves to Unlock a Lock Combination
  类型：online_judge
• Pandas Data Manipulation Task (UberEats Analytics)
  类型：online_judge
• Squares of a Sorted Array (with constraints discussion)
  类型：online_judge
• Unknown (Second Question from Provided 1point3acres Link)
  类型：online_judge
• Shaker (Cocktail Shaker) Variant on an n×n Board
  类型：online_judge
• Offline Union-Find for edge-length-limited connectivity queries
  类型：online_judge
• Customer Revenue and Referral Tracking: Get Lowest K by Total Revenue Threshold
  类型：online_judge
• Implement Multi-Head Self-Attention in PyTorch
  类型：online_judge
• Check Existence of a Path Where All Edge Weights Are ≥ k (Multiple Queries)
  类型：online_judge
• Shortest Jumps in a Circular Array (Exact Left/Right Jumps)
  类型：online_judge
• Earliest Time When All Riders Become Connected From Ride-Share Logs
  类型：online_judge
• Best Time to Buy and Sell Stock
  类型：online_judge
• Straight-Line Word Search in 8 Directions
  类型：online_judge
• Meeting Scheduler
  类型：online_judge
• Purchase Optimization
  类型：online_judge
• Chain-Reaction Attraction on a 2D Plane (Minimum Activations)
  类型：online_judge
• Number of Islands (Union-Find preferred)
  类型：online_judge
• Count groups of three non-overlapping intervals
  类型：online_judge
• Minimum Edge Reversals (Re-rooting DP)
  类型：online_judge
• Price Discount Using Next Less-or-equal Element
  类型：online_judge
• Minimum Edge Reversals So Every Node Is Reachable (Avoid Recursion Stack Overflow)
  类型：online_judge
• Unknown (Uber OA Question 1 from referenced post)
  类型：online_judge
• Count Concurrent Meeting Rooms Over Time
  类型：online_judge
• Design a Parking Lot with Vehicle-Type Constraints
  类型：online_judge
• Algorithm: Perform arithmetic computations over a bidirectional graph
  类型：online_judge
• Binary Tree: compute subtree sum, maximum path value, and nodes on the path
  类型：online_judge
• Binary Tree: Subtree Sum, Maximum Path Value, and Path Nodes
  类型：online_judge
• Virus Spread in a Grid (Rotting Oranges Variant)
  类型：online_judge
• Undisclosed coding question Q2
  类型：online_judge
• Undisclosed coding question Q1
  类型：online_judge
• Determine if k is balanced in permutation
  类型：online_judge
• Minimum Edge Reversal to Make All Edges Point Away from a Root
  类型：online_judge
• Find Discounted Prices
  类型：online_judge
• Maximizing Throughput with Scaling Costs
  类型：online_judge
• Discount Rule and Final Prices
  类型：online_judge
• Shortest Subarray with At Least K Different Integers
  类型：online_judge
• Minimum Operations to Make n Zero
  类型：online_judge
• Count Paths that Can Form Palindrome in a Tree
  类型：online_judge
• Jump Game on an Array
  类型：online_judge
• 反向挪领
  类型：online_judge
• 儿幺儿
  类型：online_judge
• Highlight Substrings in a Sentence
  类型：online_judge
• Print Directory with Indentation
  类型：online_judge
• Exclusive Time of Functions
  类型：online_judge
• Minimize Strictly Convex 2D Function
  类型：online_judge
• Detect Cycle in Directed Graph
  类型：online_judge
• Currency Conversion
  类型：online_judge
• OOD: Parking Lot System
  类型：online_judge
• Max Area of Island
  类型：online_judge
• Task Dependency Completion Time
  类型：online_judge
• Shuttle Pickup Location Optimization
  类型：online_judge
• Square of Sorted Array and K-th Largest
  类型：online_judge
• Number of Islands 1&2 Combined
  类型：online_judge
• Revenue Tracking System
  类型：online_judge
• Longest Odd Length Palindrome
  类型：online_judge
• Coding and Experimentation Challenge
  类型：online_judge
• Palindromic Paths in Undirected Graph
  类型：online_judge
• Maximum Path Sum with Prime Steps
  类型：online_judge
• Exploring Layers with Energy
  类型：online_judge
• Maximum Sum with Jump Game
  类型：online_judge
• String to Digit Conversion
  类型：online_judge
• Number of Ways to Make the Points
  类型：online_judge
• Validate Function Syntax
  类型：online_judge
• Number of Islands
  类型：online_judge
• Number of Islands in a Matrix
  类型：online_judge
• Kth Largest Element in a BST
  类型：online_judge
• Work Schedule Overlaps
  类型：online_judge
• Generate New Array Based on Adjacent Elements
  类型：online_judge
• Longest Common Prefix for Two Lists of Strings
  类型：online_judge
• Library Book Operations
  类型：online_judge
• Add Two Numbers as Strings
  类型：online_judge
• Tennis Tournament Winners
  类型：online_judge
• Track Customer Website Visits
  类型：online_judge
• Longest Diagonal Pattern
  类型：online_judge
• Maximum Square Area
  类型：online_judge
• Design a Parking Lot
  类型：online_judge
• Alien Dictionary Evaluation
  类型：online_judge
• Meeting Rooms Allocation with Delay
  类型：online_judge
• Find Combinations After Flip
  类型：online_judge
• Find Target with Rotation
  类型：online_judge
• Insert Interval and Merge Intervals
  类型：online_judge
• Maximize Score Sum
  类型：online_judge
• Course Schedule
  类型：online_judge
• Paint Line and Count Adjacent Same Colors
  类型：online_judge
• Rotate Matrix with Gravity Effect
  类型：online_judge
• Count Pairs with Flipped Sum Equal
  类型：online_judge
• Find Number of Joins in an Array
  类型：online_judge
• Find Index of Max Rate to Price Ratio
  类型：online_judge
• Currency Exchange Algorithm
  类型：online_judge
• Design Meeting Scheduler
  类型：online_judge
• Enhanced Word Search in Multiple Directions
  类型：online_judge
• Meeting Room Scheduler Design
  类型：online_judge
• Meeting Room Booking Counter
  类型：online_judge
• Lamp Control Points
  类型：online_judge
• Simulate Figure Fall
  类型：online_judge
• Binary Tree Boundary Traversal
  类型：online_judge
• Compare Sum of Even and Odd Indexed Elements
  类型：online_judge
• Implement Rate Limiter
  类型：online_judge
• Card Game between Two Players
  类型：online_judge
• Flip and Compare in Arrays
  类型：online_judge
• Gravity Fall Simulation in a Grid
  类型：online_judge
• Memory Allocation and Erasure on Block Units
  类型：online_judge
• Alien Dictionary: Derive Character Order from Sorted Words
  类型：online_judge
• Calculate Website User Conversion Rate from Events
  类型：online_judge
• Design MedianFinder with addNum, findMedian, and optional removeNum
  类型：online_judge
• Find kth Largest Element in BST Using O(1) Space
  类型：online_judge
• Highest-Paid Employee Name and Salary per Department
  类型：online_judge
• Find Available Meeting Room for Given Time Interval
  类型：online_judge
• Uber Phone Interview: Common Screening Questions Preparation
  类型：online_judge