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Decode ways with wildcardsHardWrite codeAmazon styleWrite codeAmazon styleHard32 minJSON parserHardWrite codeStripe styleWrite codeStripe styleHard40 minSessionize clickstreamHardWrite codeDatabricks styleWrite codeDatabricks styleHard35 minKth smallest dynamic setHardWrite codeWrite codeHard35 minChemical formula parserHardWrite codeWrite codeHard35 minLinear regression gradient stepHardWrite codeOpenAI styleWrite codeOpenAI styleHard30 minJWT token parsingHardWrite codeStripe styleWrite codeStripe styleHard28 minSafe columns to dropHardWrite codeDatabricks styleWrite codeDatabricks styleHard35 minDays of service at a cut-off dateHardData framesData framesHard12 minDistance from the team averageHardData framesData framesHard12 minMost recent order for each customerHardData framesData framesHard13 minPaid and total orders per customerHardData framesData framesHard12 minAverage score per student per subject, with gaps filledHardData framesData framesHard12 min
Fewest moves to reorder keyed childrenHardWrite codeWrite codeHard35 minResolve flexible widths in a flex rowHardWrite codeWrite codeHard45 minAccessible names from a simplified treeHardWrite codeWrite codeHard45 minEvent loop output orderHardWrite codeWrite codeHard40 minFewest forced layouts for a batch of DOM reads and writesHardWrite codeWrite codeHard40 min
Internet checksumHardWrite codeCisco styleWrite codeCisco styleHard25 minCapability token verificationHardWrite codeStripe styleWrite codeStripe styleHard30 minSession token fixation detectionHardWrite codeStripe styleWrite codeStripe styleHard30 minSanitize HTML with a tag allowlistHardWrite codeWrite codeHard45 minVerify an append-only log with a consistency proofHardWrite codeWrite codeHard45 min
Sort linked listHardWrite codeMicrosoft styleWrite codeMicrosoft styleHard35 minTiny query engineHardWrite codeSnowflake styleWrite codeSnowflake styleHard35 minSort-merge inner joinHardWrite codeSnowflake styleWrite codeSnowflake styleHard35 minSliding window medianHardWrite codeGoogle styleWrite codeGoogle styleHard35 minSmallest repunit baseHardWrite codeWrite codeHard35 minMinimize array maximumHardWrite codeWrite codeHard35 minSmallest range from k listsHardWrite codeGoogle styleWrite codeGoogle styleHard38 minCalendar max bookingsHardWrite codeGoogle styleWrite codeGoogle styleHard30 minMerge k schedulesHardWrite codeGoogle styleWrite codeGoogle styleHard30 minSkyline contourHardWrite codeGoogle styleWrite codeGoogle styleHard40 minRectangle union areaHardWrite codeGoogle styleWrite codeGoogle styleHard40 minSignificant inversionsHardWrite codeCitadel styleWrite codeCitadel styleHard30 minMedian of two arraysHardWrite codeGoogle styleWrite codeGoogle styleHard30 minCount inversionsHardWrite codeCitadel styleWrite codeCitadel styleHard28 minKth smallest distanceHardWrite codeGoogle styleWrite codeGoogle styleHard30 minKth smallest in matrixHardWrite codeGoogle styleWrite codeGoogle styleHard30 minLongest repeating substring lengthHardWrite codeGoogle styleWrite codeGoogle styleHard35 minSmallest suffixHardWrite codeWrite codeHard38 minCount smaller elements rightHardWrite codeGoogle styleWrite codeGoogle styleHard35 minMaximum gap linear timeHardWrite codeGoogle styleWrite codeGoogle styleHard30 minMake array non-decreasingHardWrite codeWrite codeHard40 minMinimum taps water gardenHardWrite codeWrite codeHard35 minMaximum team performanceHardWrite codeWrite codeHard35 minLongest repeating substringHardWrite codeGoogle styleWrite codeGoogle styleHard40 minK-th smallest distinct substringHardWrite codeWrite codeHard38 minFeature flag range trackerHardWrite codeWrite codeHard40 minSubarray sum in rangeHardWrite codeWrite codeHard45 min