CodingLevel 3
Graphs and trees
Easynot started
Mediumnot started
Hardnot started
StatusFormatCompany style
Easy
Count the people behind merged user accountsWrite code · Meta styleMeta styleWrite codeMeta style15 minRange sum in BSTWrite code · Meta styleMeta styleWrite codeMeta style15 minLowest common ancestor BSTWrite code · Amazon styleAmazon styleWrite codeAmazon style20 minPrefix count queriesWrite code · Amazon styleAmazon styleWrite codeAmazon style20 minAlert incident clusteringWrite code · ServiceNow styleServiceNow styleWrite codeServiceNow style20 minService failure blast radiusWrite codeWrite code16 minMuseum wing sizesWrite codeWrite code15 minSpreadsheet circular referenceWrite code · Microsoft styleMicrosoft styleWrite codeMicrosoft style17 minTransit shortest routeWrite code · Uber styleUber styleWrite codeUber style16 minMonorepo tree heightWrite codeWrite code16 minBST lookup pathWrite codeWrite code17 minTrie prefix match lengthWrite code · Google styleGoogle styleWrite codeGoogle style14 minMedium
Shortest path unweighted graphWrite codeWrite code25 minRelay activation timeWrite code · Amazon styleAmazon styleWrite codeAmazon style30 minLargest connected regionWrite code · Amazon styleAmazon styleWrite codeAmazon style25 minLexicographically smallest task orderWrite code · Google styleGoogle styleWrite codeGoogle style30 minShortest path weighted graphWrite code · Google styleGoogle styleWrite codeGoogle style35 minMinimum spanning treeWrite codeWrite code35 minLargest connected componentWrite codeWrite code25 minRedundant edge in treeWrite codeWrite code25 minClone graph with canonical idsWrite code · Meta styleMeta styleWrite codeMeta style30 minMinimum cable replug operationsWrite codeWrite code30 minBottom view of binary treeWrite code · Amazon styleAmazon styleWrite codeAmazon style25 minKth smallest element in BSTWrite code · Meta styleMeta styleWrite codeMeta style20 minHard
Shortest path with wall removalWrite code · Google styleGoogle styleWrite codeGoogle style40 minShortest distances that flag negative cyclesWrite codeWrite code40 minWord search on boardWrite code · Microsoft styleMicrosoft styleWrite codeMicrosoft style40 minMerge accounts by emailWrite code · Meta styleMeta styleWrite codeMeta style40 minSplit people into two groupsWrite codeWrite code35 minMaximum path sum treeWrite code · Meta styleMeta styleWrite codeMeta style30 minVertical order traversalWrite code · Meta styleMeta styleWrite codeMeta style30 minBoundary traversal of binary treeWrite code · Amazon styleAmazon styleWrite codeAmazon style35 minWhere-clause predicate treeWrite code · Snowflake styleSnowflake styleWrite codeSnowflake style30 minMerkle tree diff between replicasWrite code · Amazon styleAmazon styleWrite codeAmazon style35 minParallel job DAG makespanWrite code · Databricks styleDatabricks styleWrite codeDatabricks style30 minParallel job DAG completion timesWrite code · Databricks styleDatabricks styleWrite codeDatabricks style30 min