LeetCode The Hard Way

Bloomberg

1239 problems

ProblemDifficultyFrequency Topics
895. Maximum Frequency StackHard13.5%
Hash TableStackDesignOrdered Set
3318. Find X-Sum of All K-Long Subarrays IEasy13.5%
ArrayHash TableSliding WindowHeap (Priority Queue)
Longest Substring with At Least K Repeating CharactersMedium13.5%
Hash TableStringDivide and ConquerSliding Window
1657. Determine if Two Strings Are CloseMedium13.5%
Hash TableStringSortingCounting
Number of Distinct IslandsMedium13.5%
ArrayHash TableDepth-First SearchBreadth-First SearchUnion-FindSortingMatrixHash Function
The Skyline ProblemHard13.5%
ArrayDivide and ConquerBinary Indexed TreeSegment TreeSweep LineSortingHeap (Priority Queue)Ordered Set
Reshape Data: MeltEasy13.5%
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1765. Map of Highest PeakMedium13.5%
ArrayBreadth-First SearchMatrix
808. Soup ServingsMedium13.5%
MathDynamic ProgrammingProbability and Statistics
1975. Maximum Matrix SumMedium13.5%
ArrayGreedyMatrix
911. Online ElectionMedium13.5%
ArrayHash TableBinary SearchDesign
Wiggle Sort IIMedium13.5%
ArrayDivide and ConquerGreedySortingQuickselect
1339. Maximum Product of Splitted Binary TreeMedium13.5%
TreeDepth-First SearchBinary Tree
865. Smallest Subtree with all the Deepest NodesMedium13.5%
Hash TableTreeDepth-First SearchBreadth-First SearchBinary TreeBinary LiftingLowest Common AncestorDP on Trees
3043. Find the Length of the Longest Common PrefixMedium13.5%
ArrayHash TableStringTrie
2975. Maximum Square Area by Removing Fences From a FieldMedium13.5%
ArrayHash TableEnumeration
3731. Find Missing ElementsEasy13.5%
ArrayHash TableSorting
3047. Find the Largest Area of Square Inside Two RectanglesMedium13.5%
ArrayMathGeometry
961. N-Repeated Element in Size 2N ArrayEasy13.5%
ArrayHash TablePigeonhole Principle
2516. Take K of Each Character From Left and RightMedium13.5%
Hash TableStringSliding Window
Exclusive Time of FunctionsMedium13.5%
ArrayStack
1281. Subtract the Product and Sum of Digits of an IntegerEasy13.5%
Math
Rectangle AreaMedium13.5%
MathGeometry
House Robber IIIMedium13.5%
Dynamic ProgrammingTreeDepth-First SearchBinary TreeDP on Trees
1160. Find Words That Can Be Formed by CharactersEasy13.5%
ArrayHash TableStringCounting
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