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

Medium Hash Table OA Questions

Practice 341+ medium Hash Table coding questions from real online assessments. Filter by company, solve in the OAHelper editor, and prepare for company-wise OAs.

All Hash Table easy hard

Question 2: MovieDB WatchlistamazonMedium Question 1amazon sde1 1mayMedium Longest Contiguous HousesautodeskMedium Code Question 2amazonMedium Kid Photography

Medium Hash Table OA Questions | OAHelper

algouniversity

Medium

Largest Palindromic Numberpublicis sapientMedium

Subarray Sums Divisible by Kalgo universityMedium

Television Rating Point Calculationmorgan stanleyMedium

Modified KnapsackhackerearthMedium

Complementary PairsnebiusMedium

Shortest Substring Containing CharactersnebiusMedium

Smart SalenebiusMedium

Question 1jpmorgan chaseMedium

Question 1: Divisible TripletsvisaMedium

Question 2visaMedium

Question 1visaMedium

Code Question 2amazonMedium

Question 2ibmMedium

Question 1deshawMedium

Question 3: Count PalindromesvisaMedium

Waste of TimebnyMedium

Valid Memory Block Sizestower researchMedium

findBreachedEmployeesamazonMedium

File StructureintuitMedium

Minimum Number of Security GroupsamazonMedium

Draft Workflow Questionamazon 3marchMedium

Code Question 2amazonMedium

Calculate Max DistanceamazonMedium

Marathon Route CheckpointsdeloitteMedium

File StructureintuitMedium

SQL: Domain Name Registrar Renewal ScheduleintuitMedium

3. Count Nice Sub ArrayemergentMedium

Relay Team SelectionripplingMedium

Minimum Cost Pizza Orderdeutsche bankMedium

Directory Structure QueriesintuitMedium

Rearrange DriversuberMedium

Minimum Operations on Neural Network LayersvisaMedium

Do It Yourself Kitchen (DIY Kitchen)cepheidMedium

Find Breached EmployeesamazonMedium

Modified KnapsackhackerearthMedium

Optimize Data Packet SegmentationamazonMedium

Data Streaming Service StabilityamazonMedium

Minimum Changes for Equal Subarray SumsamazonMedium

Count Good EdgeadobeMedium

Coloring a Number LinevisaMedium

Memory AllocatorvisaMedium

Shuffle PlaylistpubmaticMedium

Java: Show BookingciscoMedium

Longest Balanced SubarraylokalMedium

Encryption ValiditylinkedinMedium

amazon OA questions amazon sde1 1may OA questions autodesk OA questions amazon OA questions algouniversity OA questions publicis sapient OA questions algo university OA questions morgan stanley OA questions