1Rotating the BoxMediumArrayTwo PointersMatrix
Solve → 2Block Placement QueriesHardArrayBinary SearchBinary Indexed Tree
Solve → 3Merge IntervalsMediumArraySorting
Solve → 4Simple Bank SystemMediumArrayHash TableDesign
Solve → 5Minimum Operations to Write the Letter Y on a GridMediumArrayHash TableMatrix
Solve → 6Block Placement QueriesHardArrayBinary SearchBinary Indexed Tree
Solve → 7Rotating the BoxMediumArrayTwo PointersMatrix
Solve → 8Simple Bank SystemMediumArrayHash TableDesign
Solve → 9Number of Black BlocksMediumArrayHash TableEnumeration
Solve → 10Candy CrushMediumArrayTwo PointersMatrix
Solve → 11Number of Subarrays That Match a Pattern IMediumArrayRolling HashString Matching
Solve → 12Count Prefix and Suffix Pairs IIHardArrayStringTrie
Solve → 13Largest Rectangle in HistogramHardArrayStackMonotonic Stack
Solve → 14Rotate ImageMediumArrayMathMatrix
Solve → 15Number of Adjacent Elements With the Same ColorMediumArray
Solve → 16Merge IntervalsMediumArraySorting
Solve → 17Spiral MatrixMediumArrayMatrixSimulation
Solve → 18Simple Bank SystemMediumArrayHash TableDesign
Solve → 19Spiral MatrixMediumArrayMatrixSimulation
Solve → 20Block Placement QueriesHardArrayBinary SearchBinary Indexed Tree
Solve → 21Minimum Operations to Write the Letter Y on a GridMediumArrayHash TableMatrix
Solve → 22Candy CrushMediumArrayTwo PointersMatrix
Solve → 23Number of Black BlocksMediumArrayHash TableEnumeration
Solve → 24Rotating the BoxMediumArrayTwo PointersMatrix
Solve → 25Count Prefix and Suffix Pairs IIHardArrayStringTrie
Solve → 26Longest Continuous Subarray With Absolute Diff Less Than or Equal to LimitMediumArrayQueueSliding Window
Solve → 27Text JustificationHardArrayStringSimulation
Solve → 28Number of Subarrays That Match a Pattern IMediumArrayRolling HashString Matching
Solve → 29Largest Rectangle in HistogramHardArrayStackMonotonic Stack
Solve → 30Best Time to Buy and Sell StockEasyArrayDynamic Programming
Solve → 31Rotate ImageMediumArrayMathMatrix
Solve → 32Number of Adjacent Elements With the Same ColorMediumArray
Solve → 33Merge IntervalsMediumArraySorting
Solve → 34Simple Bank SystemMediumArrayHash TableDesign
Solve → 35Text JustificationHardArrayStringSimulation
Solve → 36Block Placement QueriesHardArrayBinary SearchBinary Indexed Tree
Solve → 37Spiral MatrixMediumArrayMatrixSimulation
Solve → 38Rotate ImageMediumArrayMathMatrix
Solve → 39Remove BoxesHardArrayDynamic ProgrammingMemoization
Solve → 40Find the Length of the Longest Common PrefixMediumArrayHash TableString
Solve → 41Number of Flowers in Full BloomHardArrayHash TableBinary Search
Solve → 42Word SearchMediumArrayStringBacktracking
Solve → 43Longest Continuous Subarray With Absolute Diff Less Than or Equal to LimitMediumArrayQueueSliding Window
Solve → 44Coin ChangeMediumArrayDynamic ProgrammingBreadth-First Search
Solve → 45Minimum Operations to Write the Letter Y on a GridMediumArrayHash TableMatrix
Solve → 46Best Time to Buy and Sell StockEasyArrayDynamic Programming
Solve → 47Non-overlapping IntervalsMediumArrayDynamic ProgrammingGreedy
Solve → 48Count Alternating SubarraysMediumArrayMath
Solve → 49Number of IslandsMediumArrayDepth-First SearchBreadth-First Search
Solve → 50Candy CrushMediumArrayTwo PointersMatrix
Solve → 51Word Search IIHardArrayStringBacktracking
Solve → 52Largest Rectangle in HistogramHardArrayStackMonotonic Stack
Solve → 53K-diff Pairs in an ArrayMediumArrayHash TableTwo Pointers
Solve → 54Meeting Rooms IIMediumArrayTwo PointersGreedy
Solve → 55Rotate ArrayMediumArrayMathTwo Pointers
Solve → 56Find Servers That Handled Most Number of RequestsHardArrayGreedyHeap (Priority Queue)
Solve → 57Get Biggest Three Rhombus Sums in a GridMediumArrayMathSorting
Solve → 58Four DivisorsMediumArrayMath
Solve → 59Best Time to Buy and Sell Stock IIMediumArrayDynamic ProgrammingGreedy
Solve → 60Simple Bank SystemMediumArrayHash TableDesign
Solve → 61Spiral MatrixMediumArrayMatrixSimulation
Solve → 62Block Placement QueriesHardArrayBinary SearchBinary Indexed Tree
Solve → 63Text JustificationHardArrayStringSimulation
Solve → 64Minimum Operations to Write the Letter Y on a GridMediumArrayHash TableMatrix
Solve → 65Candy CrushMediumArrayTwo PointersMatrix
Solve → 66Count Alternating SubarraysMediumArrayMath
Solve → 67Rotate ImageMediumArrayMathMatrix
Solve → 68Four DivisorsMediumArrayMath
Solve → 69Longest Continuous Subarray With Absolute Diff Less Than or Equal to LimitMediumArrayQueueSliding Window
Solve → 70Rotating the BoxMediumArrayTwo PointersMatrix
Solve → 71Number of Black BlocksMediumArrayHash TableEnumeration
Solve → 72Best Time to Buy and Sell StockEasyArrayDynamic Programming
Solve → 73Number of Flowers in Full BloomHardArrayHash TableBinary Search
Solve → 74Find the Length of the Longest Common PrefixMediumArrayHash TableString
Solve → 75Count Prefix and Suffix Pairs IIHardArrayStringTrie
Solve → 76Remove BoxesHardArrayDynamic ProgrammingMemoization
Solve → 77Largest Rectangle in HistogramHardArrayStackMonotonic Stack
Solve → 78Coin ChangeMediumArrayDynamic ProgrammingBreadth-First Search
Solve → 79Word SearchMediumArrayStringBacktracking
Solve → 80Number of Subarrays That Match a Pattern IMediumArrayRolling HashString Matching
Solve → 81Merge IntervalsMediumArraySorting
Solve → 82Number of IslandsMediumArrayDepth-First SearchBreadth-First Search
Solve → 83Non-overlapping IntervalsMediumArrayDynamic ProgrammingGreedy
Solve → 84Word Search IIHardArrayStringBacktracking
Solve → 85Meeting Rooms IIMediumArrayTwo PointersGreedy
Solve → 86Rotate ArrayMediumArrayMathTwo Pointers
Solve → 87Minimum Absolute Difference Between Elements With ConstraintMediumArrayBinary SearchOrdered Set
Solve → 88K-diff Pairs in an ArrayMediumArrayHash TableTwo Pointers
Solve → 89Number of Adjacent Elements With the Same ColorMediumArray
Solve → 90Best Time to Buy and Sell Stock IIMediumArrayDynamic ProgrammingGreedy
Solve → 91Count Prefix and Suffix Pairs IEasyArrayStringTrie
Solve → 92Get Biggest Three Rhombus Sums in a GridMediumArrayMathSorting
Solve → 93Find Servers That Handled Most Number of RequestsHardArrayGreedyHeap (Priority Queue)
Solve →