Company OAs DSA Sheet All Problems Placement Data Interview Experiences Premium

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 Practicing Go 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 75+ hard Matrix coding questions from real online assessments. Filter by company, solve in the OAHelper editor, and prepare for company-wise OAs.

All Matrix easy medium

Maximizing Salesforce OpportunitiessalesforceHard Graph Paths IalgouniversityHard Throwing DicealgouniversityHard Graph Paths IIalgo universityHard Sweet Synergyalgo university

Hard

House Cleaningbny mellonHard

Find Longest ImageamazonHard

Path ProblemamazonHard

Airport LimousinegameskraftHard

Word Search in a GridciscoHard

Sweet SynergyalgouniversityHard

Beautiful stringsinfosysHard

Dungeon GameharnessHard

Matrix Challengefuture firstHard

Coin CollectionagodaHard

The Maximum AreacrayondataHard

Dungeon GamequinceHard

Dora's Preferred Routegoldman sachsHard

Rainwater Harvesting in Recharge PitflipkartHard

Rhombic CipherdevrevHard

CodewritingdevrevHard

FriendszomatoHard

Predicting the S&P 500 IndexmckinseyHard

Table ShrinkerrubrikHard

A lot to MergemedianetHard

Help Your Master 2medianetHard

Rainwater HarvestingmedianetHard

Maximal Rectangleplutus researchHard

Painting the wallrubrikHard

The Castle CourtyardnxtwaveHard

Enhance Consistency in a Sequence of DecisionsnxtwaveHard

Funny Jumping GameinfosysHard

Minimum Cost Grid PathinfosysHard

Count Grid Coloring PatternsnaviHard

Maximum Coins in a Grid Pathpublicis sapientHard

Minimize Maximum Distance to HububerHard

Maximum RidersuberHard

Optimal Path in a GridzomatoHard

Minimum Strength to reach DestinationairtelHard

Minimum Total AwkwardnessmyntraHard

Minimum Number of Clicks to Make All Cells ZeromeeshoHard

Help Your Master 2medianet 12sepHard

Word Search in a 2D GridciscoHard

Maximum RidersuberHard

RoboMax Pathgoldman sachs 19augHard

RoboMax Patrol Robotgoldman sachsHard

Minimum and Maximum Moves to Fill First ColumntrilogyHard

Airport Limousinetata digitalHard

Minimize Grid InconvenienceamazonHard

A lot to MergemedianetHard

salesforce OA questions algouniversity OA questions algouniversity OA questions algo university OA questions algo university OA questions bny mellon OA questions amazon OA questions amazon OA questions

Hard Matrix OA Questions | OAHelper