Coding problems
Algorithm problems with tests in Python, JavaScript, Java, Go and C++, checked on our server.
Counting Search Tree ShapesMediumIs It a Search Tree?MediumTwo Mixed-Up NodesMediumBalanced Tree from a Sorted ListEasyTree From a Sorted ChainMediumK-th Smallest in a Search TreeMediumPreorder of a Search TreeMediumNearest Value in a Search TreeEasyK Keys Nearest to a TargetHardBiggest Search SubtreeMediumRemove a Key From a Search TreeMediumMost Frequent Values in a Search TreeEasyAdd Every Bigger KeyMediumPair Sum in a Search TreeEasyKeep Only a Range of a Search TreeMediumFind the Subtree by KeyEasyA New Leaf in a Search TreeMediumClosest Pair in a Search TreeEasySearch Tree Into a LineEasyBand Sum in a Search TreeEasySearch Tree From a Visit LogMediumRunning Totals in a Search TreeMediumPair Across Two Search TreesMediumMerge Two Search TreesMediumHeaviest Search SubtreeHardRebalance a Search TreeMediumOther Orders for the Same Search TreeHardSearch Tree Height From Insertion OrderMediumFloor and Ceiling in a Search TreeMedium