LeetCode The Hard Way

Microsoft

1371 problems

ProblemDifficultyFrequency Topics
Confirmation RateMedium27.7%
Database
1944. Number of Visible People in a QueueHard27.7%
ArrayStackMonotonic Stack
Friend Requests II: Who Has the Most FriendsMedium27.7%
Database
263. Ugly NumberEasy27.7%
Math
986. Interval List IntersectionsMedium27.7%
ArrayTwo PointersSweep Line
2560. House Robber IVMedium27.7%
ArrayBinary SearchDynamic ProgrammingGreedy
1456. Maximum Number of Vowels in a Substring of Given LengthMedium27.7%
StringSliding Window
898. Bitwise ORs of SubarraysMedium27.7%
ArrayDynamic ProgrammingBit Manipulation
3688. Bitwise OR of Even Numbers in an ArrayEasy27.7%
ArrayBit ManipulationSimulation
3648. Minimum Sensors to Cover GridMedium27.7%
Math
3728. Stable Subarrays With Equal Boundary and Interior SumMedium27.7%
ArrayHash TablePrefix Sum
1502. Can Make Arithmetic Progression From SequenceEasy27.7%
ArraySorting
Count and SayMedium25.4%
String
N-Queens IIHard25.4%
BacktrackingAlgorithm X
Text JustificationHard25.4%
ArrayStringSimulation
77. CombinationsMedium25.4%
Backtracking
Remove Duplicates from Sorted List IIMedium25.4%
Linked ListTwo Pointers
Partition ListMedium25.4%
Linked ListTwo Pointers
Minimum Depth of Binary TreeEasy25.4%
TreeDepth-First SearchBreadth-First SearchBinary Tree
214. Shortest PalindromeHard25.4%
StringRolling HashString MatchingHash FunctionManacherZ AlgorithmKnuth–Morris–Pratt Algorithm
Alien DictionaryHard25.4%
ArrayStringDepth-First SearchBreadth-First SearchGraph TheoryTopological SortDirected Acyclic Graph
Game of LifeMedium25.4%
ArrayMatrixSimulation
367. Valid Perfect SquareEasy25.4%
MathBinary Search
Largest Divisible SubsetMedium25.4%
ArrayMathDynamic ProgrammingSorting
Find K Pairs with Smallest SumsMedium25.4%
ArrayHeap (Priority Queue)
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