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Coding Topic

Stack OA Questions

Practice 74+ Stack coding questions from real online assessments. Filter by company, solve in the OAHelper editor, and prepare for company-wise OAs.

easy Stack medium Stack hard Stack

QuestionCompanyDifficulty

Valid Password Constructionde-shawMedium Laser Propagationsprinklr-27julyEasy Laser Relay Across the TowerssprinklrMedium

Super Stack

Medium

Lighthouse Flag BroadcastgoogleHard

Lexicographic Removal DuelamazonHard

Encrypting StringsexpediaMedium

Task 2 - Balanced Bracket-like String ScoringwiproMedium

Finding Sequences of Identical ValuesepamEasy

Largest Rectangle in HistogramnikeHard

CalculatorcanonicalMedium

Cache Optimization PoweramazonHard

Lexicographically Largest SubsequenceamazonMedium

Dual Expression EvaluatorukgMedium

largestMagicaladobeMedium

Question 60adobeMedium

Browser historybarclaysMedium

Code Question 1amazonMedium

Narrow Road Vehicle Collision SimulationappleMedium

Shopkeeper Sale - Final Price of ItemsmicrosoftMedium

Vehicle Collision SimulationappleMedium

Stack Batch Removalimc tradingMedium

Final Discounted PricegocometEasy

Compress Big WordsaristaMedium

Second next greater elementuidaiHard

Final PriceagodaEasy

Valid BracketsibmEasy

Strong ElementsimpetusMedium

Valid BracketsibmEasy

Matrix Challengefuture firstHard

Question 1ibmMedium

Evaluating Circuit ExpressionszscalerHard

String ValidationtavantMedium

The Maximum AreacrayondataHard

Searching ChallengehugoEasy

Rubrik Data Durability Window AnalysisrubrikHard

Largest Rectangular MuraldevrevHard

Decode StringzomatoMedium

Special KeyboardzomatoMedium

Valid Parenthesesrahi platform technologiesEasy

Buildings with an Ocean ViewvisaEasy

Largest Rectangle in HistogramvisaHard

Maximal Rectangleplutus researchHard

Lexicographically Smallest String from OperationsamdocsMedium

Array Burst problemgoldman sachsMedium

Chocolate stacknetradyneEasy

Final PricemicrosoftEasy

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