LeetCode The Hard Way

Juspay

19 problems

ProblemDifficultyFrequency Topics
1993. Operations on TreeMedium100%
ArrayHash TableTreeDepth-First SearchBreadth-First SearchDesign
2359. Find Closest Node to Given Two NodesMedium84.4%
Depth-First SearchGraph Theory
3409. Longest Subsequence With Decreasing Adjacent DifferenceMedium81%
ArrayDynamic Programming
2360. Longest Cycle in a GraphHard76.9%
Depth-First SearchBreadth-First SearchGraph TheoryTopological SortKosaraju's AlgorithmTarjan's SCC Algorithm
2374. Node With Highest Edge ScoreMedium74.6%
Hash TableGraph Theory
3842. Toggle Light BulbsEasy74.6%
ArrayHash TableSortingSimulation
Sliding Window MaximumHard68.7%
ArrayQueueSliding WindowHeap (Priority Queue)Monotonic QueueRange Minimum/Maximum Query
2009. Minimum Number of Operations to Make Array ContinuousHard68.7%
ArrayHash TableBinary SearchSliding Window
1857. Largest Color Value in a Directed GraphHard60.5%
Hash TableStringDynamic ProgrammingGraph TheoryTopological SortMemoizationCountingDirected Acyclic Graph
2087. Minimum Cost Homecoming of a Robot in a GridMedium60.5%
ArrayGreedy
3515. Shortest Path in a Weighted TreeHard54.7%
ArrayTreeDepth-First SearchBinary Indexed TreeSegment Tree
73. Set Matrix ZeroesMedium46.5%
ArrayHash TableMatrix
1717. Maximum Score From Removing SubstringsMedium46.5%
StringStackGreedy
134. Gas StationMedium46.5%
ArrayGreedy
Asteroid CollisionMedium46.5%
ArrayStackSimulation
56. Merge IntervalsMedium46.5%
ArraySortingQuicksort
152. Maximum Product SubarrayMedium46.5%
ArrayDynamic Programming
11. Container With Most WaterMedium46.5%
ArrayTwo PointersGreedy
200. Number of IslandsMedium46.5%
ArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix
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