Company OAsDSA SheetAll ProblemsPlacement DataInterview ExperiencesPremium
OAHelper

Built by students, for students — practice company-specific OAs, DSA sheets, and real interview experiences to land your dream role.

© 2026 OAHelper.in·Terms·Privacy·Refunds·Trust & Safety·Contact·
Ready to crack your next OA?

Practice company-specific questions trusted by thousands of students across India.

Start PracticingGo Premium
OA Practice·DSA·Placements

Disclaimer: OAHelper is an independent educational platform. We (oahelper.in) do not own the images or questions shown. Content is uploaded by users.

Topic Difficulty

Hard Matrix OA Questions

Practice 33+ hard Matrix coding questions from real online assessments. Filter by company, solve in the OAHelper editor, and prepare for company-wise OAs.

All Matrixeasymedium
Word PuzzleciscoHardGood SequencesamazonHardRice Cultivation AreaswiproHardMaximizing Salesforce OpportunitiessalesforceHardGraph Paths IalgouniversityHardThrowing DicealgouniversityHardGraph Paths IIalgo universityHardSweet Synergyalgo universityHardHouse Cleaningbny mellonHardFind Longest ImageamazonHardPath ProblemamazonHardAirport LimousinegameskraftHardWord Search in a GridciscoHardSweet SynergyalgouniversityHardBeautiful stringsinfosysHardDungeon GameharnessHardMatrix Challengefuture firstHardCoin CollectionagodaHardThe Maximum AreacrayondataHardDungeon GamequinceHardDora's Preferred Routegoldman sachsHardRainwater Harvesting in Recharge PitflipkartHardRhombic CipherdevrevHardCodewritingdevrevHardFriendszomatoHardPredicting the S&P 500 IndexmckinseyHardTable ShrinkerrubrikHardA lot to MergemedianetHardHelp Your Master 2medianetHardRainwater HarvestingmedianetHardMaximal Rectangleplutus researchHardPainting the wallrubrikHardThe Castle CourtyardnxtwaveHardEnhance Consistency in a Sequence of DecisionsnxtwaveHardFunny Jumping GameinfosysHardMinimum Cost Grid PathinfosysHardCount Grid Coloring PatternsnaviHardMaximum Coins in a Grid Pathpublicis sapientHardMinimize Maximum Distance to HububerHardMaximum RidersuberHardOptimal Path in a GridzomatoHardMinimum Strength to reach DestinationairtelHardMinimum Total AwkwardnessmyntraHardMinimum Number of Clicks to Make All Cells ZeromeeshoHardHelp Your Master 2medianet 12sepHardWord Search in a 2D GridciscoHardMaximum RidersuberHardRoboMax Pathgoldman sachs 19augHardRoboMax Patrol Robotgoldman sachsHardMinimum and Maximum Moves to Fill First ColumntrilogyHard
cisco OA questionsamazon OA questionswipro OA questionssalesforce OA questionsalgouniversity OA questionsalgouniversity OA questionsalgo university OA questionsalgo university OA questions