376 questions collected
Amazon has 376 published OA questions on OAHelper. Most reported topics: Array, Greedy, Sorting, Hash Table, String.
Prefix Medians of an Unsorted Array
mediumMaximum Consecutive Bags Sum
hardMinimum Conflicts in a Branch Merge
hardMirrored Scroll of Palindoria
mediumMinimum Maximum Parcel Load
easyEven Out the Box Piles
easySentence Improvement MCQ
mediumTournament Power Boosters
mediumQuantum Physics Course Memory Points
easyBinary Command Autocomplete
mediumSmallest Base Segment for Data Restoration
mediumSmallest Base Segment for Data Restoration
mediumRoute 53 Active Account Unexpired Domain Report
mediumTotal Votes for Female Ambassador Candidates Under 50
easyECS Task Termination Load
mediumServer Power Scaling
mediumMovieDB (Spring Boot): Custom Lists - Add & Remove Movies
mediumEldoria Maze Energy Check
easyWord Quest Clue Matching
easySort the Tagged Linked List
easyAlternating Festival Lights
mediumMaximum Performance Score
hardSerial Numbers with Multiplicative Digit Sums
hardAPI Request Throttling
mediumLexicographic Removal Duel
hardMinimum Operations to Process Packages
mediumCounting Good Scaled Arrays
mediumSerial Numbers with Digit Sum Condition S(k·n)=k·S(n)
hardKingdom of Numis - Coin Coverage Subsets
hardE-commerce Return Routing Engine
mediumOptimal Inventory
mediumCache Optimization Power
hardKing Leo's Magical Fruits
mediumLexicographically Largest Subsequence
mediumCount Magical Sequences
mediumTeam Issue Tracker
mediumReturn Routing Engine
mediumSmart Processor Efficiency
mediumPromo Code Validator
mediumAmazon Drone Delivery Network - Minimum Travel Time
mediumEfficient Tasks
hardExecuting Processes
mediumMinimum Operations
mediumgetMinUnshippedParcels
mediumCampus Placement Selection
easyMinimum Toll Fee
mediumRider on a Grid
mediumGood Sequences
hardIdentify Products with Price Fluctuations
easySecret XOR Key Recovery
hardLongest Contiguous Subarray with Unique Bit Counts
easyMonthly Financial Transaction Alert System
mediumResource Locking in an m-Ary Tree
mediumEmployee Sales Performance Analysis
mediumHighest Departmental Salary
mediumMystical Maze
mediumAlternating Pattern with Segment Reversals
hardSorted Tagged Linked List
easyCode Question 2
mediumClear the Package Queue
mediumInventory Allocation Priority Algorithm
mediumCount Distinct Colorings
mediumDomino Coloring in Warehouse Automation
mediumColouring a Domino Tiling
mediumWarehouse Automation Domino Coloring
mediumMinimum Product Redistribution Cost
mediumMovieDB(MERN): Actor Follow & Notification System
hardAmazon Cloud Fleet - Smallest Total Boost for Non-decreasing Capacity
mediumCategory Browse Engine
mediumMinimum Redistribution Cost
hardReturn Routing
mediumAllocate Limited Inventory Items
easyReturn Routing Engine
mediumMovieDB Watchlist
mediumQuestion 1
mediumCode Question 2
mediumMaximize Perfect Slots
hardWarehouse Robotics System
mediumAWS Scalable Systems
mediumWarehouse Robotics System Stability
mediumMaximize Delivery Route Efficiency Rating
hardFlash Sale Revenue Maximization
mediumMovieDB(MERN): Actor Follow & Notification System
mediumArray Generator Service
mediumAmazon Drone Delivery Network
mediumStudent Backlogs
easyAmazon Marketplace Seller Performance: June 2022
easyAmazon SQL Assessment Questions
mediumSpoiled Shipments
mediumCode Question 2
hardMaximum Efficiency Rating
mediumCode Question 2
mediumMaximum performanceScore
hardCode Question 2
mediumCode Question 1
mediumCode Question 2
hardServer Redirection Bug
hardCode Question 1
mediumMaximum and Minimum Median
mediumCode Question 2
mediumCode Question 1
mediumMaximum Performance Score
easyCode Question 1
mediumFind Smallest Key
mediumTotal Response Time
mediumAssuredly Compromised Accounts
mediumTotal Response Time with Throttling Mechanism
mediumCode Question 2
hardComputer Science MCQ Set: Algorithms, Data Structures, and Systems
mediumLinux Administration and Programming Logic MCQ Set
mediumSoftware Engineering and Networking MCQ Assessment
easyCustomer Purchase Data
easySQL and Database Management Systems MCQ Set
mediumfindBreachedEmployees
mediumCode Question 2
hardCode Question 1: Maximum and Minimum Medians
easyCode Question 1
easyCode Question 2
hardMinimum Number of Security Groups
mediumFixing a Request Redirection Bug
mediumMaximize Equal Parts in String Prefixes
mediumBalanced Security Groups
mediumCode Question 1
mediumCode Question 2
mediumServer Redirection Bug
hardAmazon Order Delays
mediumAmazon Souvenir Shop
mediumScaling Server Powers
mediumAmazon Warehouse Robotics System
mediumCalculate Max Distance
mediumCode Question 2: OptiResource Kit
mediumTask Termination Sweep
easyFind Longest Image
hardCode Question 1
mediumMinimize Total Expense with OptiBatch Kit
mediumSort Bug Report Frequencies
easyClean String
easyConsonant Vowel Merge
easyCount Wrapped Items
easyCompetitor Comparative Score
hardLexicographically Maximum Final Sequence
mediumCode Question 2
hardCoding Problem
mediumQuestion 2
easyMinimum Meeting Rooms
mediumDNA Sequencing
hardPath Problem
hardCode Question 2
hardMaximum and Minimum Median of Subsequences
easyCode Question 1
mediumOptimize Reserved Concurrency
mediumFind Breached Employees
mediumTotal Response Time
mediumOptimize Reserved Concurrency
mediumRestore Warehouse Stock Levels
hardMaximum Protected Population
mediumAPI Request Throttling
mediumOptimize Data Packet Segmentation
mediumMaximum and Minimum Median of Subsequences
mediumData Streaming Service Stability
mediumMinimum Changes for Equal Subarray Sums
mediumOptimize Reserved Concurrency
hardOptimal Data Encryption
easyHTTP Request Redirection
hardRelocate Security Units for Maximum Protection
mediumOptimize Data Packet Segmentation
mediumOptimize Reserved Concurrency
mediumValid Server Identifiers
mediumCode Question 1
mediumLongest Arithmetic Subarray With One Change
hardSmart Cities Security Units
mediumLexicographically Maximal Transformation
mediumMaximize Median with Operations
mediumFrequent Updates and Computations
mediumMaximize Revenue from Flash Sale
hardOptimize Reserved Concurrency
mediumProductive Team of Four Workers
hardMinimum Project Completion Time
mediumStock Market Prediction
mediumMinimize Maximum Project Time
hardMaximize Total Revenue
mediumSort Products with k-Distance Swaps
mediumMaximum System Memory Capacity
easyMaximum Subscription Cost
mediumMinimum Security Groups
mediumInfection Sequences
hardMaximum Distinct Elements
mediumTime Complexity of Sort Function
easyQuestion 14
easyQuestion 14
easyQuestion 1
mediumMinimum Operations to Sort Products
mediumCode Question 1
easyMaximum Affinity
mediumMaximum Subscription Cost
mediumSubsequence Medians
mediumMaximize Server Health
mediumLexicographically Maximum Final Sequence
mediumDetermine Stability Risk
mediumRobo Race
mediumSafe Devices
easyFind Maximum Performance Score
hardMaximum Performance Score
hardMaximum Performance Score
mediumWebsite Usage Analysis
mediumUnpurchased Categories
mediumCode Question 2
mediumMinimum Delivery Time
mediumFulfillment Center Order Processing
mediumSubsequence Medians
easyMedians
easySmart Cities Security Units Relocation
mediumLexicographically Maximum Array Result
mediumMaximum and Minimum Median of Subsequences
easyMinimize Order Processing Time
mediumMove Units
mediumMinimum Modifications for Stable Network Node
mediumTotal Distinct Differences
hardPacking Efficiency
hardMinimum Shipments
easyAggregate Packing Efficiency
hardSystem Stabilization Time
easyTotal Packing Efficiency
hardCalculate Optimal Bandwidth
hardDetermine Max DataFlow
hardMinimum Shipments
mediumOptimal Bandwidth
hardGet Max Health
mediumMinimum Adjustments for Optimal Binary Stream
mediumFind Number of Retailers
mediumMaximum Total DataFlow
hardMinimum Package Processing Operations
mediumTotal Packing Efficiency
mediumCode Question 1
mediumCollect The Coins
hardModified Knapsack Problem
easyCode Question 1
easyQuery Process Activity
hardLexicographically Smallest Sequence
hardCode Question 2
mediumMaximum System Memory Capacity
mediumFind Minimum Sum
mediumMinimize Cleaning Cost
mediumdetermineMaxDataFlow
hardMaximum Data Flow
hardMinimum Operations to Process Packages
easyLexicographical String Game
mediumMinimum Operations to Dispatch Items
easyTotal Packing Efficiency
hardNumber of Retailers Covering a Point
mediumDistinct Stock Profit Pairs
easyCode Question 1
easyCode Question 2
hardMedians
mediumMinimum Classes for Skill Grouping
easyFirst Unique Character in a String
easyGroup Students
easyMaximum Final Element
mediumMerge Overlapping Times
mediumFirst Unique Character
easyMinimum Storage Capacity
mediumMinimum Swaps to Satisfy File Affinities
hardMaximum Storage Efficiency
mediumMedians of Subsequences
easyMaximum Storage Efficiency
mediumDetermine Minimum Storage
mediumMaximum Performance with Limited Expense
mediumCode Question 1
mediumMaximize Hardware Performance
mediumDetermine Minimum Facilities
mediumMaximize Storage Efficiency
mediumCode Question 1
mediumMinimum Removals to Stay within Budget
hardMinimum Unique Processing Facilities
mediumRetrieve Missing Data
mediumMinimum Drone Delivery Time
mediumMinimum Errors in Binary String
mediumLexicographically Smallest Sequence
mediumRetrieve Missing Data
easyMinimum Delivery Time
hardSubsequence Medians
easyRetrieve Data
hardMaximize Storage Efficiency
mediumCode Question 2
mediumCalculate Max Distance
mediumDrone Delivery Minimum Time
mediumOptimize Inventory Shipments
mediumProcess Performance Queries
hardMinimum Cost to Convert Products
mediumGet Subarray Median
hardRetrieve Data
mediumMaximize Product Operations
easyMissing Digits Reconstruction
mediumPermutation Sorter
mediumLongest Regex Match Substring
mediumMinimize Cleaning Cost
mediumLongest Wildcard Match
easyMinimize Cleaning Cost
mediumMaximum Isolation
mediumSubarray Median Count
hardRecover the Lost Record
mediumRetrieve Data
mediumMedians
easycountLowerValueItems
mediumMissing Digits in Configuration
hardMaximize Dispatch Credits
hardMinimum Additions for Range Coverage
hardCake Factory
mediumKill the Enemy
easyNotepad Editor
mediumAlien invasion
mediumStacking Money
mediumCovid - 20
mediumCode Question 2
mediumMathematics and Machine Learning Fundamentals
mediumStar Removal
mediumWI-FI Router Installation
mediumMinimize Grid Inconvenience
hardCode Question 1
hardMaximum Lucky Number
mediumCalculate Minimum Cost
mediumCalculate Pending Orders
mediumFruit Crush
mediumWord Conjugates
mediumMinimize Cleaning Cost
easyProcessor Power Matching
mediumWord Conjugates
mediumMaximize Unique Remainders in Hash Array
easyLongest Substring Matching Regex Pattern
mediummissingDigits
hardMinimum Even-Length Subsegments
mediumMedian of Subarray Uniqueness
hardSecurity Code Transformation
mediumMaximize Optional Tasks
easyMaximum Pages Before Suspension
mediumVulnerability Factor
hardProcess Synchronization
mediumMaximum Valid Pairs
easyMaximum Reward Points
easyCalculate Repetitiveness Feature
mediumCode Question 1
easyUse Minimum Tokens
mediumMaximum System Memory Capacity
easyCode Question 1
mediumFind Longest Regex
hardMinimum Operations to Adjust Prices
mediumSlot Machine 2.0
easyWell-Organized Course Structures
mediumWell-Organized Course Structures
mediumWell-Organized Course Structures
medium```html Course Structure Analysis body { f...
mediumSimilar Substrings in Reviews
mediumMaximum Sum Compression Utility
mediumMinimum Health Required to Win the Game
easyCodeCrafters
mediumLongest Self-Sufficient Proper Substring
mediumMaximize System Throughput
easyPascal Triangle Encryption
mediumDatabase Query Optimization
mediumDigit Collapse Cipher
mediumAmazon Eco-Friendly Product Ratings
mediumSports Analytics
easyTiling Cost
easyMinimum XOR Operations to Zero
hardData Dependency Sum
mediumMean Rank Subarray Count
mediumSales Pattern Analysis
mediumAmazon Subsequence Prices
mediumEffiBin Kit Optimization
mediumAmazon Financial Optimization Tool
mediumAWS Array Outlier Detection
mediumAmazon Real Estate Analytics - Building Height Variance Problem
mediumMinimum Delivery Grid Path
mediumBalanced Bracket Splits
mediumGCD Array Transformation Sum
mediumMinimum Network Lag Optimization
easy