Problem set
Arrays questions
121 matching · 38 easy · 73 medium · 10 hard
- 01Two SumEasy
- 04Median of Two Sorted ArraysHard
- 11Container With Most WaterMedium
- 153SumMedium
- 163Sum ClosestMedium
- 184SumMedium
- 26Remove Duplicates from Sorted ArrayEasy
- 27Remove ElementEasy
- 31Next PermutationMedium
- 33Search in Rotated Sorted ArrayMedium
- 34Find First and Last Position of Element in Sorted ArrayMedium
- 35Search Insert PositionEasy
- 39Combination SumMedium
- 40Combination Sum IIMedium
- 41First Missing PositiveHard
- 42Trapping Rain WaterHard
- 45Jump Game IIMedium
- 46PermutationsMedium
- 47Permutations IIMedium
- 53Maximum SubarrayMedium
- 55Jump GameMedium
- 56Merge IntervalsMedium
- 57Insert IntervalMedium
- 66Plus OneEasy
- 73Set Matrix ZeroesMedium
- 75Sort ColorsMedium
- 78SubsetsMedium
- 80Remove Duplicates from Sorted Array IIMedium
- 81Search in Rotated Sorted Array IIMedium
- 84Largest Rectangle in HistogramHard
- 88Merge Sorted ArrayEasy
- 90Subsets IIMedium
- 118Pascal's TriangleEasy
- 119Pascal's Triangle IIEasy
- 120TriangleMedium
- 121Best Time to Buy and Sell StockEasy
- 122Best Time to Buy and Sell Stock IIMedium
- 123Best Time to Buy and Sell Stock IIIHard
- 128Longest Consecutive SequenceMedium
- 134Gas StationMedium
- 135CandyHard
- 136Single NumberEasy
- 137Single Number IIMedium
- 152Maximum Product SubarrayMedium
- 153Find Minimum in Rotated Sorted ArrayMedium
- 154Find Minimum in Rotated Sorted Array IIHard
- 160Find Peak ElementMedium
- 161Missing RangesEasy
- 162Maximum GapMedium
- 165Two Sum II - Input Array Is SortedMedium
- 167Majority ElementEasy
- 172Largest NumberMedium
- 174Best Time to Buy and Sell Stock IVHard
- 175Rotate ArrayMedium
- 178House RobberMedium
- 184Count PrimesMedium
- 189Minimum Size Subarray SumMedium
- 193House Robber IIMedium
- 195Kth Largest Element in an ArrayMedium
- 196Combination Sum IIIMedium
- 197Contains DuplicateEasy
- 199Contains Duplicate IIEasy
- 200Contains Duplicate IIIHard
- 208Summary RangesEasy
- 209Majority Element IIMedium
- 218Product of Array Except SelfMedium
- 219Sliding Window MaximumHard
- 223Shortest Word DistanceEasy
- 229Paint HouseMedium
- 2323Sum SmallerMedium
- 233Single Number IIIMedium
- 238Missing NumberEasy
- 243H-IndexMedium
- 244H-Index IIMedium
- 250Move ZeroesEasy
- 251Peeking IteratorMedium
- 254Find the Duplicate NumberMedium
- 262Longest Increasing SubsequenceMedium
- 267Best Time to Buy and Sell Stock with CooldownMedium
- 272Maximum Product of Word LengthsMedium
- 276Wiggle Sort IIMedium
- 282Increasing Triplet SubsequenceMedium
- 294Top K Frequent ElementsMedium
- 308Range AdditionMedium
- 316Insert Delete GetRandom O(1)Medium
- 320Shuffle an ArrayMedium
- 340Arithmetic SlicesMedium
- 341Third Maximum NumberEasy
- 358Find All Duplicates in an ArrayMedium
- 361Find All Numbers Disappeared in an ArrayEasy
- 368132 PatternMedium
- 380Max Consecutive OnesEasy
- 382Max Consecutive Ones IIMedium
- 421Shortest Unsorted Continuous SubarrayMedium
- 425Can Place FlowersEasy
- 431Design Circular QueueMedium
- 432Maximum Product of Three NumbersEasy
- 438Maximum Average Subarray IEasy
- 439Set MismatchEasy
- 449Non-decreasing ArrayMedium
- 472Subarray Product Less Than KMedium
- 476Maximum Length of Repeated SubarrayMedium
- 481Find Pivot IndexEasy
- 519Longest Mountain in ArrayMedium
- 522Maximize Distance to Closest PersonMedium
- 544Monotonic ArrayEasy
- 548Sort Array By ParityEasy
- 552Maximum Sum Circular SubarrayMedium
- 562Valid Mountain ArrayEasy
- 574Squares of a Sorted ArrayEasy
- 581Add to Array-Form of IntegerEasy
- 615Replace Elements with Greatest Element on Right SideEasy
- 623Kids With the Greatest Number of CandiesEasy
- 629Running Sum of 1d ArrayEasy
- 632Kth Missing Positive NumberEasy
- 639Richest Customer WealthEasy
- 644Buildings With an Ocean ViewMedium
- 650Merge Triplets to Form Target TripletMedium
- 652Concatenation of ArrayEasy
- 661Find the Difference of Two ArraysEasy
- 665Number of Zero-Filled SubarraysMedium