Questions
Status
Contextual bandit offer selectionHardDesignMeta styleDesignMeta styleHard45 minEnterprise RAG permissioning and retrievalHardDesignMicrosoft styleDesignMicrosoft styleHard50 minRow-level authorization in queriesHardDesignSnowflake styleDesignSnowflake styleHard50 minAuthorization policy safe rolloutHardDesignDesignHard45 minLLM retrieval-augmented QAHardDesignMicrosoft styleDesignMicrosoft styleHard55 minAuthorization serviceHardDesignGoogle styleDesignGoogle styleHard50 minReal-time fraud scoring at scaleHardDesignStripe styleDesignStripe styleHard45 minMultimodal content embeddingsHardDesignMeta styleDesignMeta styleHard45 minLLM output quality monitoringHardDesignOpenAI styleDesignOpenAI styleHard45 minRAG system with document permissionsHardDesignOpenAI styleDesignOpenAI styleHard45 minLLM inference serving with batchingHardDesignOpenAI styleDesignOpenAI styleHard45 minContent moderation at scaleHardDesignMeta styleDesignMeta styleHard45 minOnline learning for feed rankingHardDesignMeta styleDesignMeta styleHard40 minDesign the triage system, then price itHardSystem design with AI partsSystem design with AI partsHard45 minPrice case notes for flagged card paymentsHardSystem design with AI partsSystem design with AI partsHard55 min
Three-way partition by pivotEasyWrite codeWrite codeEasy15 minAdd two large numbers stored as digit listsEasyWrite codeMicrosoft styleWrite codeMicrosoft styleEasy10 minEvaluate a postfix expression from a calculatorEasyWrite codeBloomberg styleWrite codeBloomberg styleEasy12 minQuery string encodingEasyWrite codeStripe styleWrite codeStripe styleEasy15 minCheck whether a stack can produce a pop orderEasyWrite codeWrite codeEasy15 minPath prefix routingEasyWrite codeWrite codeEasy15 minCheck whether a phrase reads the same backwardsEasyWrite codeMeta styleWrite codeMeta styleEasy10 minApply a flash sale price cap to a cartEasyWrite codeWrite codeEasy10 minZero the stock counts of recalled pallet slotsEasyWrite codeWrite codeEasy10 minShow the best price still to comeEasyWrite codeWrite codeEasy10 minCarousel rotationEasyWrite codeWrite codeEasy12 minFind the first day a shop balance goes negativeEasyWrite codeWrite codeEasy10 minTrack the record high price on every dayEasyWrite codeWrite codeEasy10 minFind the smallest opening stock for a dayEasyWrite codeWrite codeEasy10 minCount the days a closing price went upEasyWrite codeWrite codeEasy10 minEven sum pairsEasyWrite codeWrite codeEasy12 minSplit into batchesEasyWrite codeWrite codeEasy10 minCount the boxes used when packing in orderEasyWrite codeWrite codeEasy10 minAlternate lane mergeEasyWrite codeWrite codeEasy11 minCheapest quotesEasyWrite codeWrite codeEasy10 minMerge two sorted code lists without repeatsEasyWrite codeWrite codeEasy10 minFind the units missing from a deliveryEasyWrite codeWrite codeEasy10 minFirst-time buyersEasyWrite codeWrite codeEasy11 minFirst unique scanEasyWrite codeWrite codeEasy12 minCodes with frequency kEasyWrite codeWrite codeEasy12 minPad or truncate rowEasyWrite codeWrite codeEasy11 minShift items through slotsEasyWrite codeWrite codeEasy10 minValidate scan prefixEasyWrite codeWrite codeEasy10 minFirst unique playEasyWrite codeWrite codeEasy10 minRightmost unique valueEasyWrite codeWrite codeEasy10 minEpisode played k timesEasyWrite codeWrite codeEasy11 minFirst repeat valueEasyWrite codeWrite codeEasy10 minClose duplicatesEasyWrite codeWrite codeEasy11 minRepeated tagsEasyWrite codeWrite codeEasy10 minGroup tags by first letterEasyWrite codeWrite codeEasy10 min