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.

Coding Topic

Tree OA Questions

Practice 222+ Tree coding questions from real online assessments. Filter by company, solve in the OAHelper editor, and prepare for company-wise OAs.

easy Tree medium Tree hard Tree

QuestionCompanyDifficulty

Salesforce Channel Optimizationsalesforce 23aprilMedium Marked TrailnatwestMedium Plant Root Food SearchhsbcMedium

Corporate Hierarchy

zorvyn

Medium

Corporate HierarchysalesforceMedium

Town Network Population CountingboeingHard

Ideal Pathbny codedivasHard

Radio WavesgocometMedium

Pythagorean Triplesat&tMedium

File StructureintuitMedium

Minimum Heightintuit 1marchHard

Amazon Order Delaysamazon 1marchEasy

Marathon Route CheckpointsdeloitteMedium

File StructureintuitMedium

Disk StorageuberHard

Prime AllocationintuitMedium

Salesforce Data CollectionsalesforceHard

Data CompressionjoveoMedium

Tree RelationjoveoMedium

Directory Structure QueriesintuitMedium

Uber Hierarchical Spatial IndexinguberMedium

Dynamic Surge ValueuberMedium

Data CompressionjoveoMedium

Maximize Scorecisco aiHard

Track Command PositionintuitMedium

Collect The CoinsciscoHard

Count Tree PathsgameskraftHard

Minimum SumadobeHard

Count Good EdgeadobeMedium

Product Dependency TreeintuitHard

Minimize Tree DiameterintuitHard

2. Count Good PathshandsonHard

Product Dependency TreeintuitHard

Minimum HeightintuitHard

Recursive Land DivisionswiggyMedium

Recursive Land DivisionswiggyMedium

Key Salesforce TeamssalesforceMedium

Village Route Population Sum QueryuidaiHard

Data CompressionjoveoMedium

Hydrate the nodesarcesiumMedium

Minimum ReversaloracleMedium

Recursive Land DivisionswiggyMedium

Maximum strengthskyforceHard

Minimum Distance with Special NodescurefitMedium

Number of NodesimpetusHard

Pythagorean TriplessomehtingMedium

Town Network Population CountingmoveinsyncHard

Track Command PositionbnyMedium

Minimize Tree Diameterbny 18novMedium

Neural Network Neuron Vigorservice now 16novHard

All topics All problems Company-wise OA questions salesforce 23april OA questions natwest OA questions hsbc OA questions zorvyn OA questions salesforce OA questions boeing OA questions

Tree OA Questions | OAHelper