Amazon Online Assessment 2026
The 2026 Amazon Online Assessment (OA) has three parts:
- Coding (~90 min): two problems in any major language — the section that decides most offers.
- Workstyles Assessment (~15 min): questions that map your answers to Amazon's Leadership Principles.
- Work Simulation (~60 min): an interactive day-in-the-life SDE scenario. Full breakdown →
(Last updated: Sep 2026)
Amazon OA Questions
| Name | Time | Online Judge | Experience Level | Platform | Difficulty |
|---|---|---|---|---|---|
| How it Works:Process and Format 2026 | |||||
| Get DNA Sequence2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Pairs of Candidates / Get Number of Teams2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Distribute Parcels/ Minimize Maximum Parcels2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Maximum Coins in K Consecutive Lockers 2026/09 new | Online Judge | Experienced/New Grad | N/A | Hard | |
| Minimum Coverage Radius After Building One Fountain 2026/09 new | Online Judge | Experienced/New Grad | N/A | Hard | |
| Color Palette / Count Teams / Form (Hackathon) Teams2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Get Operations2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Get Minimum Boxes2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Get Minimum Total Distance2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Max Information2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Min Cost To Add New Roads2026/09 | Online Judge | Experienced/New Grad | N/A | Hard | |
| Smallest Lexical Palindrome/ Compute Encoded Product Name2026/09 | Online Judge | Experienced/New Grad | N/A | Easy | |
| Get Max Area2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Maximum Greyness2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Process Queries on Cart2026/09 | 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 Locations2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Min Subsegments2026/09 | Online Judge | Experienced/New Grad | N/A | Hard | |
| Check Similar Passwords2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Max Reward Points2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Checksum Logic2026/09 | Online Judge | Experienced/New Grad | N/A | Hard | |
| Make Power Nondecreasing2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Fortune Telling2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Get Max Racers2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Count Distinct Passwords2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Get Minimum Number of Moves2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Maximize Negative PnL Months2026/09 | Online Judge | Experienced/New Grad/Intern | N/A | Medium | |
| Find Minimum Load Index2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Execute Processes II2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Execute Processes2026/09 | Experienced/New Grad | N/A | Medium | ||
| Max RAM Capacity2026/09 | Online Judge | Experienced/New Grad | N/A | Medium | |
| Reduce Giftsnew | Online Judge | Experienced/New Grad | N/A | Medium | |
| Items in Containers (#Closed Intervals) | Online Judge | 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 |
| Delivery Zones 2026/09 | N/A | Experienced/New Grad | N/A | Medium | |
| Max Points from Gem Gathering 2026/09 | N/A | Experienced/New Grad | N/A | Medium | |
| Optimal Screening Schedule 2026/09 | N/A | Experienced/New Grad | N/A | Medium | |
| Relocate Retailers 2026/09 | N/A | Experienced/New Grad | N/A | Medium | |
| Minimal Box Arrangement 2026/09 | N/A | Experienced/New Grad | N/A | Medium | |
| Priorities after Execution 2026/09 | N/A | Experienced/New Grad | N/A | Medium | |
| Reverse for Smaller Strings2026/09 | N/A | Experienced/New Grad | N/A | Medium | |
| Max Book Copies 2026/09 | N/A | Experienced/New Grad | N/A | Medium | |
| Regulate Temperature2026/09 | N/A | Experienced/New Grad | N/A | Medium | |
| Alternating Assignment2026/09 | N/A | Experienced/New Grad | N/A | Medium | |
| Find Max Money2026/09 | N/A | Experienced/New Grad | N/A | Medium | |
| Calculate Final Prices2026/09 | N/A | Experienced/New Grad | N/A | Medium | |
| Sum of Max of Subarrays2026/09 | N/A | Experienced/New Grad | N/A | Medium | |
| Optimal Task Scheduling2026/09 | N/A | Experienced/New Grad | N/A | Medium | |
| Dynamic Removals2026/09 | N/A | Experienced/New Grad | N/A | Medium | |
| Maximize Sum of Array Multiplication2026/09 | N/A | Experienced/New Grad | N/A | Medium | |
| Max Information Gain2026/09 | 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 |
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