Coding Topic

Stack OA Questions

Practice 85+ Stack coding questions from real online assessments. Filter by company, solve in the OAHelper editor, and prepare for company-wise OAs.

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QuestionCompanyDifficulty
Largest Good Binary String Through Adjacent SwapsukgHardRelay Towers on the RidgeblackrockMediumNested Transactions Key-Value StoretescoMediumHeaviest Root-to-Leaf LeavesgoogleMediumCity Travel History With Past and Future JumpskickdrumMediumFlatten a Nested ListentntMediumInfer the Concrete Return Type of a Generic Function SignaturecmartHardWatchtower Sightlines on the RidgegoogleMediumSmallest and Largest Number After Removing K DigitspixelcomputeMediumEvaluate a Signed Integer Arithmetic ExpressionmicrosoftHardSmallest String Off the Sorting BeltzomatoMediumLexicographically Smallest Encoded StringripplingMediumLongest Balanced Subsequence in a RangeuidaiMediumMinimum Length After Deleting SubstringsvisaMediumCoprime ArrayzinniaMediumBalanced Bracket String ArrayvisaEasyMinimum Swaps to Balance a String of ParenthesesvisaMediumLongest Balanced Binary SubarrayibmMediumSmallest Number After Removing K Digitszs associatesMediumSmallest Encrypted StringmicrosoftMediumAsteroid Belt SurvivorsmicrosoftMediumCalculate Total RegionmicrosoftMediumReduce String By Cancelling AB And CD Pairsamerican expressMediumMaximum String With Distinct Charactersbit mesra-campus test-2027MediumExpression Contains Redundant BracketssigmoidEasyMinimum Removals to Balance ParenthesesmetaMediumVisible TowersblackrockMediumTrapping Rain WatersamsungHardCancelling Lettersjane streetMediumFinal Discounted Pricerippling_2augMediumPreorder of the Parent-Dominant Tree from Its InorderflipkartMediumResultant StringhsbcMediumText Editor PrototypeexpediaMediumRepair the Damaged Bracket SequenceadobeMediumSimplified Text EditorvisaMediumLargest Square in a CityscapevisaHardPeak Load Over Every WindowschrodingerMediumCounting Alternating SubgridsdeshawHardBeam Pipe AnnihilationdeshawMediumMaglev Pod Convoy MergesquinceHardSum of Subarray Maximum Times LengthschrodingerMediumValid Password Constructionde-shawMediumLaser Propagationsprinklr-27julyEasyLaser Relay Across the TowerssprinklrMediumSuper StacklinkedinMediumLighthouse Flag BroadcastgoogleHardLexicographic Removal DuelamazonHardEncrypting StringsexpediaMediumTask 2 - Balanced Bracket-like String ScoringwiproMediumFinding Sequences of Identical ValuesepamEasy
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