LeetCode The Hard Way

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2324 problems

ProblemDifficultyFrequency Topics
2481. Minimum Cuts to Divide a CircleEasy8.2%
MathGeometry
Tenth LineEasy8.2%
Shell
2573. Find the String with LCPHard8.2%
ArrayStringDynamic ProgrammingGreedyUnion-FindMatrix
848. Shifting LettersMedium8.2%
ArrayStringPrefix Sum
3272. Find the Count of Good IntegersHard8.2%
Hash TableMathCombinatoricsEnumeration
2179. Count Good Triplets in an ArrayHard8.2%
ArrayBinary SearchDivide and ConquerBinary Indexed TreeSegment TreeMerge SortOrdered Set
Patients With a ConditionEasy8.2%
Database
3523. Make Array Non-decreasingMedium8.2%
ArrayStackGreedyMonotonic Stack
2145. Count the Hidden SequencesMedium8.2%
ArrayPrefix Sum
797. All Paths From Source to TargetMedium8.2%
BacktrackingDepth-First SearchBreadth-First SearchGraph TheoryDirected Acyclic Graph
The Latest Login in 2020Easy8.2%
Database
984. String Without AAA or BBBMedium8.2%
StringGreedy
3373. Maximize the Number of Target Nodes After Connecting Trees IIHard8.2%
TreeDepth-First SearchBreadth-First Search
1563. Stone Game VHard8.2%
ArrayMathDynamic ProgrammingGame Theory
1061. Lexicographically Smallest Equivalent StringMedium8.2%
StringUnion-Find
3442. Maximum Difference Between Even and Odd Frequency IEasy8.2%
Hash TableStringCounting
3423. Maximum Difference Between Adjacent Elements in a Circular ArrayEasy8.2%
Array
1432. Max Difference You Can Get From Changing an IntegerMedium8.2%
MathGreedy
3585. Find Weighted Median Node in TreeHard8.2%
ArrayBinary SearchDynamic ProgrammingBit ManipulationTreeDepth-First Search
996. Number of Squareful ArraysHard8.2%
ArrayHash TableMathDynamic ProgrammingBacktrackingBit ManipulationBitmask
1755. Closest Subsequence SumHard8.2%
ArrayTwo PointersDynamic ProgrammingBit ManipulationMeet in the MiddleSortingBitmask
Validate IP AddressMedium8.2%
String
3307. Find the K-th Character in String Game IIHard8.2%
MathBit ManipulationRecursion
1865. Finding Pairs With a Certain SumMedium8.2%
ArrayHash TableDesign
3630. Partition Array for Maximum XOR and ANDHard8.2%
ArrayMathGreedyBit ManipulationEnumeration
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