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Graphs and treesLevel 3Open topic
Count the people behind merged user accountsEasyWrite codeMeta styleWrite codeMeta styleEasy15 minRange sum in BSTEasyWrite codeMeta styleWrite codeMeta styleEasy15 minLowest common ancestor BSTEasyWrite codeAmazon styleWrite codeAmazon styleEasy20 minPrefix count queriesEasyWrite codeAmazon styleWrite codeAmazon styleEasy20 minAlert incident clusteringEasyWrite codeServiceNow styleWrite codeServiceNow styleEasy20 minService failure blast radiusEasyWrite codeWrite codeEasy16 minMuseum wing sizesEasyWrite codeWrite codeEasy15 minSpreadsheet circular referenceEasyWrite codeMicrosoft styleWrite codeMicrosoft styleEasy17 minTransit shortest routeEasyWrite codeUber styleWrite codeUber styleEasy16 minMonorepo tree heightEasyWrite codeWrite codeEasy16 minBST lookup pathEasyWrite codeWrite codeEasy17 minTrie prefix match lengthEasyWrite codeGoogle styleWrite codeGoogle styleEasy14 min
Conflict seating tablesEasyWrite codeWrite codeEasy16 minRadio mesh hopsEasyWrite codeWrite codeEasy15 minKitchen prep orderEasyWrite codeWrite codeEasy18 minCategory leaf countsEasyWrite codeWrite codeEasy15 minService name shorthandEasyWrite codeWrite codeEasy15 minRelease train wavesEasyWrite codeWrite codeEasy16 minCritical hub corridorEasyWrite codeWrite codeEasy18 minFind unreachable pagesEasyWrite codeWrite codeEasy15 minVerify daisy chain rigEasyWrite codeWrite codeEasy16 minBin code prefix lengthEasyWrite codeWrite codeEasy16 minCache network distanceEasyWrite codeWrite codeEasy17 minShortest path unweighted graphMediumWrite codeWrite codeMedium25 minRelay activation timeMediumWrite codeAmazon styleWrite codeAmazon styleMedium30 minLargest connected regionMediumWrite codeAmazon styleWrite codeAmazon styleMedium25 minLexicographically smallest task orderMediumWrite codeGoogle styleWrite codeGoogle styleMedium30 minShortest path weighted graphMediumWrite codeGoogle styleWrite codeGoogle styleMedium35 minMinimum spanning treeMediumWrite codeWrite codeMedium35 minLargest connected componentMediumWrite codeWrite codeMedium25 minRedundant edge in treeMediumWrite codeWrite codeMedium25 minClone graph with canonical idsMediumWrite codeMeta styleWrite codeMeta styleMedium30 minMinimum cable replug operationsMediumWrite codeWrite codeMedium30 minBottom view of binary treeMediumWrite codeAmazon styleWrite codeAmazon styleMedium25 minKth smallest element in BSTMediumWrite codeMeta styleWrite codeMeta styleMedium20 minCount inversions in tree traversalMediumWrite codeWrite codeMedium20 minClosest value in BSTMediumWrite codeMeta styleWrite codeMeta styleMedium20 minReplace words with shortest rootMediumWrite codeGoogle styleWrite codeGoogle styleMedium25 minMutable range sum queriesMediumWrite codeWrite codeMedium30 minRange update point queryMediumWrite codeWrite codeMedium30 minZigzag level order traversalMediumWrite codeAmazon styleWrite codeAmazon styleMedium20 minReconstruct tree postorderMediumWrite codeMicrosoft styleWrite codeMicrosoft styleMedium30 minDistance between two nodesMediumWrite codeMeta styleWrite codeMeta styleMedium25 minHeight balanced binary treeMediumWrite codeWrite codeMedium20 minMinimum BST heightMediumWrite codeWrite codeMedium20 minBinary tree right side viewMediumWrite codeWrite codeMedium25 minLSM run mergingMediumWrite codeMeta styleWrite codeMeta styleMedium30 minLSM compaction with tombstonesMediumWrite codeMeta styleWrite codeMeta styleMedium25 minRotting orangesMediumWrite codeAmazon styleWrite codeAmazon styleMedium30 minAll paths DAGMediumWrite codeWrite codeMedium18 min