Amazon Online Assessment 2025
Amazon OA Questions
| Name | Time | Online Judge | Experience Level | Platform | Difficulty |
|---|---|---|---|---|---|
| Get DNA Sequence2025/07 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Pairs of Candidates / Get Number of Teams2025/07 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Process Queries on Cart2025/07 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Distribute Parcels/ Minimize Maximum Parcels2025/07 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Color Palette / Count Teams / Form (Hackathon) Teams 2025/07 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Get Operations2025/07 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Get Minimum Boxes2025/07 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Get Minimum Total Distance2025/07 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Max Information2025/07 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Min Cost To Add New Roads2025/07 | Online Judge | Experienced/New Grad | N/A | Hard | |
| Smallest Lexical Palindrome/ Compute Encoded Product Name2025/07 | Online Judge | Experienced/New Grad | N/A | Easy | |
| Get Max Area2025/07 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Maximum Greyness2025/07 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Cutoff Ranks | Online Judge | New Grad/Intern | SHL | Easy | |
| Utilization Checks / Autoscale Policy | Online Judge | Experienced | HackerRank | Easy | |
| Packaging Automation | Online Judge | N/A | HackerRank | Medium | |
| E-Mart Product Ranking | Online Judge | Experienced/New Grad | N/A | Medium | |
| Min Appends to Make Subsequence | Online Judge | Experienced/New Grad | N/A | Medium | |
| Maximum Deviation Among All Substrings | Online Judge | Experienced/New Grad | N/A | Medium | |
| Find Critical Servers | Online Judge | New Grad/Experienced | SHL/HackerRank | Hard | |
| Star Sum | Online Judge | Experienced/New Grad | N/A | Medium | |
| Minimum Total Wattage | Online Judge | Experienced/New Grad | N/A | Easy | |
| Nearest Cities | Online Judge | New Grad | SHL | Medium | |
| Number of Swaps | Online Judge | Medium | |||
| Turnstile | *** ** * | Online Judge | Experienced | SHL/HackerRank | Medium |
| Maximum Precipitation | Online Judge | Experienced/New Grad | N/A | Medium | |
| Best Stock Combos | Online Judge | Experienced/New Grad | N/A | Medium | |
| Split String | Online Judge | Experienced/New Grad | N/A | Medium | |
| Stock Fluctuation | Online Judge | Experienced/New Grad | N/A | Medium | |
| Find Pairs | Online Judge | Experienced/New Grad | N/A | Medium | |
| Decoding String | Online Judge | Experienced/New Grad | N/A | Medium | |
| Fill the Truck | *** ** * | Online Judge | New Grad | SHL | Easy |
| Suitable Warehouse Locations2025/07 | Experienced/New Grad | N/A | Medium | ||
| Check Similar Passwords2025/07 | Experienced/New Grad | N/A | Medium | ||
| Max Reward Points2025/07 | Experienced/New Grad | N/A | Medium | ||
| Make Power Nondecreasing2025/07 | Experienced/New Grad | N/A | Medium | ||
| Fortune Telling2025/07 | Experienced/New Grad | N/A | Medium | ||
| Get Max Racers2025/07 | Experienced/New Grad | N/A | Medium | ||
| Count Distinct Passwords2025/07 | Experienced/New Grad | N/A | Medium | ||
| Get Minimum Number of Moves2025/07 | Experienced/New Grad | N/A | Medium | ||
| Maximize Negative PnL Months2025/07 | Experienced/New Grad/Intern | N/A | Medium | ||
| Find Minimum Load Index2025/07 | Experienced/New Grad | N/A | Medium | ||
| Execute Processes II2025/07 | Experienced/New Grad | N/A | Medium | ||
| Execute Processes2025/07 | Experienced/New Grad | N/A | Medium | ||
| Reduce Giftsnew | Experienced/New Grad | N/A | Medium | ||
| Items in Containers (#Closed Intervals) | Experienced | SHL/HackerRank | Medium | ||
| Separate Pages | Online Judge | Experienced/New Grad | N/A | Medium | |
| Slice Array | Online Judge | Experienced/New Grad | N/A | Medium | |
| Split Array III | Online Judge | Experienced/New Grad | N/A | Medium | |
| Minimum Number Of Swaps | Online Judge | Experienced/New Grad | N/A | Easy | |
| Merge Adjacent Numbers | Online Judge | Experienced/New Grad | N/A | Easy | |
| Channels Maximum Quality | Online Judge | Experienced/New Grad | N/A | Medium | |
| Minimum Net Price Change | Online Judge | Experienced/New Grad | N/A | Easy | |
| Min Swaps to Partition | Online Judge | Experienced/New Grad | N/A | Medium | |
| Subtree: Maximum Average Node/ Highest Tenure | *** ** * | Online Judge | New Grad | SHL | Easy |
| Secret Fruit List | *** ** * | Online Judge | N/A | N/A | Easy |
| Find Related Products | ** * | Online Judge | N/A | N/A | Medium |
| Zombie Infection | *** ** * | Online Judge | Experienced | SHL/HackerRank | Medium |
| Top N Buzzwords | *** ** * | Online Judge | Experienced | SHL | Easy |
| Load Balancer | ** * 2019 | Online Judge | N/A | N/A | Medium |
| Optimize Memory Usage/ Amazon Prime Air Route | *** ** * | Online Judge | All | HackerRank | Medium |
| Find Substrings | *** ** * | Online Judge | N/A | N/A | Hard |
| Partition String | *** ** * | Online Judge | Intern | SHL | Medium |
| Maximum of Minimum Values I | ** * 2019 | Online Judge | Intern | N/A | Easy |
| Maximum of Minimum Values II | ** * 2019 | Online Judge | Intern | N/A | Medium |
| Connect Ropes (/Merge Files) | 2019 | Online Judge | N/A | N/A | Easy |
| Min Cost to Repair Edges (Minimum Spanning Tree II) | ** * 2019 | Online Judge | N/A | N/A | Hard |
| Data Center Critical Connections (Minimum Spanning Tree III) | ** * | Online Judge | Intern | SHL | Hard |
| Longest String Made Up Of Only Vowels | 2019 | Online Judge | N/A | N/A | Medium |
| Hackathon Teams | Online Judge | Experienced/New Grad | N/A | Medium | |
| Shopping Cart Selection | Online Judge | Experienced/New Grad | N/A | Medium | |
| Transaction Logs | ** * | Online Judge | Experienced | HackerRank | Easy |
| Five-Star Sellers | ** * | Online Judge | Experienced | HackerRank | Medium |
| Count LRU Cache Misses | *** ** * | Online Judge | New Grad/Intern | SHL | Medium |
| Debt Records | ** * | Online Judge | New Grad | SHL | Easy |
| Max Points from Gem Gathering 2025/07 | N/A | Experienced/New Grad | N/A | Medium | |
| Optimal Screening Schedule 2025/07 | N/A | Experienced/New Grad | N/A | Medium | |
| Relocate Retailers 2025/07 | N/A | Experienced/New Grad | N/A | Medium | |
| Minimal Box Arrangement 2025/07 | N/A | Experienced/New Grad | N/A | Medium | |
| Priorities after Execution 2025/07 | N/A | Experienced/New Grad | N/A | Medium | |
| Reverse for Smaller Strings2025/07 | N/A | Experienced/New Grad | N/A | Medium | |
| Max Book Copies 2025/07 | N/A | Experienced/New Grad | N/A | Medium | |
| Regulate Temperature2025/07 | N/A | Experienced/New Grad | N/A | Medium | |
| Find Max Money2025/07 | N/A | Experienced/New Grad | N/A | Medium | |
| Calculate Final Prices2025/07 | N/A | Experienced/New Grad | N/A | Medium | |
| Sum of Max of Subarrays2025/07 | N/A | Experienced/New Grad | N/A | Medium | |
| Optimal Task Scheduling2025/07 | N/A | Experienced/New Grad | N/A | Medium | |
| Dynamic Removals2025/07 | N/A | Experienced/New Grad | N/A | Medium | |
| Maximize Sum of Array Multiplication2025/07 | N/A | Experienced/New Grad | N/A | Medium | |
| Max Information Gain2025/07 | N/A | Experienced/New Grad | N/A | Medium | |
| Warehouse Distributionnew | N/A | Experienced/New Grad | N/A | Medium | |
| First Unique Characternew | N/A | Experienced/New Grad | N/A | Medium | |
| Count Faultsnew | N/A | Experienced/New Grad | N/A | Medium | |
| Encrypted Passwordnew | N/A | Experienced/New Grad | N/A | Medium | |
| Overlapping Timesnew | N/A | Experienced/New Grad | N/A | Medium | |
| Number of Unique Stringsnew | N/A | Experienced/New Grad | N/A | Medium | |
| Minimum Pages Per Daynew | N/A | Experienced/New Grad | N/A | Medium | |
| Maximum Subjects Passednew | N/A | Experienced/New Grad | N/A | Medium | |
| Get Distinct Pairsnew | N/A | Experienced/New Grad | N/A | Medium | |
| Maximum Times Word Removednew | N/A | Experienced/New Grad | N/A | Medium | |
| Maximize Solar Powered Bulbsnew | N/A | Experienced/New Grad | N/A | Medium | |
| Match Stringsnew | N/A | Experienced/New Grad | N/A | Medium | |
| Smallest Palindromenew | N/A | Experienced/New Grad | N/A | Medium | |
| Get Mean Rank Countnew | N/A | Experienced/New Grad | N/A | Medium | |
| Count Spikesnew | N/A | Experienced/New Grad | N/A | Medium | |
| Review Scorenew | N/A | Experienced/New Grad | N/A | Medium | |
| Get Minimum Costnew | N/A | Experienced/New Grad | N/A | Medium | |
| Minimum Inefficiencynew | N/A | Experienced/New Grad | N/A | Medium | |
| Get Average Standingnew | Experienced/New Grad | N/A | Medium | ||
| Erase Pairsnew | N/A | Experienced/New Grad | N/A | Medium | |
| Fruit Crushnew | N/A | Experienced/New Grad | N/A | Medium | |
| Get Success Valuenew | N/A | Experienced/New Grad | N/A | Medium | |
| Score Differencenew | N/A | Experienced/New Grad | N/A | Medium | |
| Location After Transfersnew | N/A | Experienced/New Grad | N/A | Medium | |
| Max Score in Balanced Stringnew | N/A | Experienced/New Grad | N/A | Medium | |
| Get Min Distancenew | N/A | INTERN | N/A | Medium | |
| Get Trucks for Itemsnew | N/A | FULLTIME | N/A | Medium | |
| Max Score in Balanced Stringnew | N/A | Experienced/New Grad | N/A | Medium | |
| Count Maximum Profitable Groupsnew | N/A | Experienced/New Grad | N/A | Medium | |
| Get Min Cost Datanew | N/A | Experienced/New Grad | N/A | Medium | |
| Rice Bagsnew | N/A | Experienced/New Grad | N/A | Medium | |
| Maximum Final Valuenew | N/A | Experienced/New Grad | N/A | Medium | |
| Get Pairs Countnew | N/A | Experienced/New Grad | N/A | Medium | |
| Games Won By Group1new | N/A | Experienced/New Grad | N/A | Medium | |
| Get Discount Pairsnew | N/A | Experienced/New Grad | N/A | Medium | |
| Group Studentsnew | N/A | Experienced/New Grad | N/A | Medium | |
| Maxima Countnew | N/A | Experienced/New Grad | N/A | Medium | |
| Find Unique Valuesnew | N/A | Experienced/New Grad | N/A | Medium | |
| Remove Anagramnew | N/A | Experienced/New Grad | N/A | Medium | |
| Largest Set of Onionnew | N/A | Experienced/New Grad | N/A | Hard | |
| Longest Matchnew | N/A | Experienced/New Grad | N/A | Hard | |
| Dropped Requestsnew | N/A | Experienced/New Grad | N/A | Hard | |
| Find Requests in Queuenew | N/A | Experienced/New Grad | N/A | Hard | |
| Recurring Namesnew | N/A | Experienced/New Grad | N/A | Medium | |
| Maximum User Trafficnew | N/A | Experienced/New Grad | N/A | Medium | |
| Find Maximum Rushnew | N/A | Experienced/New Grad | N/A | Medium | |
| Reverse String with Minimum Shiftsnew | N/A | Intern | N/A | Medium | |
| Find Minimum Keypad Click Countnew | N/A | Experienced/New Grad/Intern | N/A | Medium | |
| Get Maximum Greynessnew | N/A | Intern | N/A | Medium | |
| Return Recordsnew | N/A | Intern | N/A | Medium | |
| Sort Product Codesnew | N/A | Intern | N/A | Medium | |
| Lucky Numbersnew | N/A | Experienced/New Grad/Intern | N/A | Medium | |
| Max Training Scorenew | N/A | Experienced/New Grad/Intern | N/A | Medium | |
| Minimum Operations to Make Arraynew | N/A | Experienced/New Grad/Intern | N/A | Medium | |
| Kth Minimum Vulnerabilitynew | N/A | Experienced/New Grad/Intern | N/A | Medium | |
| Get Max Aggregate Temperature Changenew | N/A | Experienced/New Grad/Intern | N/A | Medium | |
| Balanced Shipmentsnew | N/A | Experienced/New Grad/Intern | N/A | Medium | |
| Find Earliest Monthnew | N/A | Experienced/New Grad/Intern | N/A | Medium | |
| All Substrings with Knew | N/A | Experienced/New Grad/Intern | N/A | Medium | |
| Ways to Group Parcelsnew | N/A | Experienced/New Grad/Intern | N/A | Medium | |
| Reverse Binary Stringnew | N/A | Experienced/New Grad/Intern | N/A | Medium | |
| Minimize Sum of Absolute Differencesnew | N/A | Experienced/New Grad/Intern | N/A | Medium | |
| Minimum Delivery Tripsnew | N/A | Experienced/New Grad | N/A | Medium | |
| Rooted Distance | N/A | Experienced/New Grad | N/A | Medium | |
| Rate Limiter | N/A | Experienced/New Grad | N/A | Medium | |
| Min Swaps to Make Palindrome | N/A | Experienced/New Grad | N/A | Medium | |
| Pipeline Tasks | N/A | Experienced/New Grad | N/A | Medium | |
| Split Array III | N/A | Experienced/New Grad | N/A | Easy | |
| Longest Product Subarray | N/A | Experienced/New Grad | N/A | Easy | |
| Coupon Checkout | N/A | Experienced/New Grad | N/A | Medium | |
| Application Assignment | N/A | Experienced/New Grad | N/A | Medium | |
| Maximum Presentations | N/A | Experienced/New Grad | N/A | Medium | |
| Group Movies by Awards | N/A | Experienced/New Grad | N/A | Hard | |
| Rose Garden Fountain | N/A | Experienced/New Grad | N/A | Medium | |
| Investment Strategy | *** ** | N/A | Experienced/New Grad | N/A | Medium |
| Annual Sale | N/A | N/A | N/A | Medium | |
| Weather Forecast | N/A | N/A | N/A | Medium | |
| Bad Numbers | *** ** | N/A | N/A | N/A | Medium |
| Move the Obstacle | *** ** | N/A | N/A | N/A | Medium |
| Stock Price | N/A | N/A | N/A | Medium | |
| Form Hackathon Teams | N/A | N/A | N/A | Medium | |
| Find Lowest Discount | N/A | N/A | N/A | Medium | |
| Number of Binary Substrings | N/A | N/A | N/A | Medium | |
| LinkedList Pair Sum | N/A | New Grad/Intern | N/A | Easy | |
| Winning Sequence | *** ** * | N/A | Intern | SHL | Medium |
| Parking Roof | *** ** | N/A | Experienced/New Grad | N/A | Medium |
| Rose Garden | *** ** | N/A | Experienced/New Grad | N/A | Medium |
| Rover Control | ** * | N/A | Experienced | HackerRank | Easy |
| Multiprocessor System | ** * | N/A | Intern | SHL | Medium |
| Shopping Patterns | ** * | N/A | Experienced | SHL/HackerRank | Medium |
| Earliest Time To Complete Deliveries | ** * | N/A | Intern | SHL/HackerRank | Medium |
| Choose a Flask | ** * | N/A | Intern | SHL/HackerRank | Medium |
| Throttling Gateway | ** * | N/A | Intern | SHL/HackerRank | Medium |
| Slowest Key | ** * | N/A | Intern | SHL | Medium |
| Labeling System | ** * | N/A | Intern | SHL | Medium |
| Unique Device Names | ** * | N/A | Intern | SHL | Medium |
| Baseball Scorekeeping | ** * | N/A | N/A | N/A | Medium |
| Find the Highest Profit | *** ** * | N/A | New Grad | SHL | Medium |
| Squared Shortest Distance | ** * | N/A | New Grad/Intern | SHL/HackerRank | Easy |
| Find the Max Available Disk Space | *** ** * | N/A | New Grad | SHL | Medium |
| Split String Into Unique Primes | ** * | N/A | New Grad | SHL | Easy |
| Fetch Items To Display | *** ** * | N/A | New Grad | SHL | Medium |
| Count Teams | *** ** * | N/A | New Grad | SHL | Easy |
| Movies on Flight/Music Pairs (Two Sum) | ** * 2019 | N/A | All | All | Easy |
| Treasure Island I | * 2019 | N/A | Experienced | N/A | Easy |
| Treasure Island II | * 2019 | N/A | Experienced | N/A | Hard |
| K Nearest Post Offices | * 2019 | N/A | N/A | N/A | Medium |
| Roll Dice | * 2019 | N/A | N/A | N/A | Easy |
| Min Cost to Connect All Nodes (Minimum Spanning Tree I) | * 2019 | N/A | N/A | N/A | Hard |
| Cell State After N Days | * 2019 | N/A | N/A | N/A | Easy |
| Shopkeeper Sale | * 2019 | N/A | N/A | N/A | Medium |
| Favorite Genres | * 2019 | N/A | New Grad | N/A | Medium |
Get one-to-one training from Google Facebook engineers
Top-notch Professionals
Learn from Facebook and Google senior engineers interviewed 100+ candidates.
Most recent interview questions and system design topics gathered from aonecode alumnus.
One-to-one online classes. Get feedbacks from real interviewers.
Customized Private Class
Already a coding expert? - Advance straight to hard interview topics of your interest.
New to the ground? - Develop basic coding skills with your own designated mentor.
Days before interview? - Focus on most important problems in target company question bank.
