Coding problems
Algorithm problems with tests in Python, JavaScript, Java, Go and C++, checked on our server.
Identical TreesEasyMirror-Image TreeEasyTree Rows by DepthMediumSnake Through the Tree LevelsMediumTree HeightEasyTree Levels From the Bottom UpMediumNearest Leaf DepthEasyLeaf Path With a Given TotalEasyOne Letter at a TimeHardDrain the Landlocked PondsMediumThe Tree Seen From the RightMediumLand Regions on a MapMediumModule Build OrderMediumCourse Enrollment QueueMediumMirror the TreeEasyDo the Links Form a TreeMediumLetter Order From a DictionaryHardFewest Square TermsMediumSteps to the Nearest ExitMediumFrame Around an Ink BlotHardBest Roots for a TreeMediumTree Columns, Top DownMediumA House Close to Every BuildingHardFewest BillsMediumIsolated Groups in a NetworkMediumLongest Uphill WalkHardExact Volume With Two BucketsMediumRatio Chain QueriesMediumLeft-Hand Leaves TotalEasyRain Pools on a Relief MapHardRain Reaching Both SeasMediumGene Edit ChainMediumIsland Coastline LengthEasyClear the Marble RowHardCan the Ball Stop at the TargetMediumBall Into the HoleHardShortest Path of a Rolling BallMediumFirst Value on the Lowest RowMediumSpelling a Word on a Dial LockHardLargest Value on Each Tree LevelMediumOpen a Minefield CellMediumSteps to the Nearest ZeroMediumClusters of Linked ServersMediumStop a Process BranchMediumOverlay Two TreesEasyInsert a Tree LevelMediumMean of Each Tree LevelEasyPair Sum in a Search TreeEasyA Tree Drawn on a GridMediumWidest Tree LevelMedium
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