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Problems

473 problems

Has videoPremium onlyReset
Array1,212Hash Table473String437Math331Greedy330Dynamic Programming327Sorting302Depth-First Search208Binary Search189Breadth-First Search166Matrix163Tree158Prefix Sum155Two Pointers150Database137All topics

Medium · 473 results

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TitleSolutionAcceptDifficultyTopics
874. Walking Robot SimulationVideo
Solution64.5%Medium
Array, Hash Table +1· 7 companies
889. Construct Binary Tree from Preorder and Postorder TraversalVideo
Solution78.0%Medium
Array, Binary Tree +3· 6 companies
890. Find and Replace PatternVideo
Solution76.8%Medium
Array, Hash Table +1· 2 companies
893. Groups of Special-Equivalent StringsVideo
Solution73.5%Medium
Array, Hash Table +2· 1 company
904. Fruit Into BasketsVideo
Solution52.5%Medium
Array, Hash Table +1· 11 companies
911. Online ElectionVideo
Solution52.8%Medium
Array, Binary Search +2· 3 companies
916. Word SubsetsVideo
Solution55.9%Medium
Array, Hash Table +1· 6 companies
923. 3Sum With MultiplicityVideo
Solution46.2%Medium
Array, Counting +3· 4 companies
930. Binary Subarrays With SumVideo
Solution69.7%Medium
Array, Hash Table +2· 7 companies
939. Minimum Area RectangleVideo
Solution55.4%Medium
Array, Geometry +3· 8 companies
947. Most Stones Removed with Same Row or ColumnVideo
Solution63.4%Medium
Depth-First Search, Graph +2· 10 companies
954. Array of Doubled PairsVideo
Solution39.7%Medium
Array, Greedy +2· 1 company
957. Prison Cells After N DaysVideo
Solution39.0%Medium
Array, Bit Manipulation +2· 1 company
959. Regions Cut By SlashesVideo
Solution77.8%Medium
Array, Breadth-First Search +4· 6 companies
966. Vowel SpellcheckerVideo
Solution61.4%Medium
Array, Hash Table +1· 7 companies
970. Powerful IntegersVideo
Solution44.5%Medium
Enumeration, Hash Table +1
974. Subarray Sums Divisible by KVideo
Solution56.7%Medium
Array, Hash Table +1· 11 companies
981. Time Based Key-Value StoreVideo
Solution49.8%Medium
Binary Search, Design +2· 34 companies
1010. Pairs of Songs With Total Durations Divisible by 60Video
Solution53.6%Medium
Array, Counting +1· 7 companies
1015. Smallest Integer Divisible by KVideo
Solution54.4%Medium
Hash Table, Math· 6 companies
1027. Longest Arithmetic SubsequenceVideo
Solution49.9%Medium
Array, Binary Search +2· 6 companies
1048. Longest String ChainVideo
Solution63.5%Medium
Array, Dynamic Programming +4· 16 companies
1054. Distant BarcodesVideo
Solution49.3%Medium
Array, Counting +4· 2 companies
1072. Flip Columns For Maximum Number of Equal RowsVideo
Solution78.5%Medium
Array, Hash Table +1· 4 companies
1079. Letter Tile PossibilitiesVideo
Solution83.5%Medium
Backtracking, Counting +2· 5 companies
1090. Largest Values From LabelsVideo
Solution64.7%Medium
Array, Counting +3· 1 company
1100. Find K-Length Substrings With No Repeated CharactersVideoPremium
Solution76.5%Medium
Hash Table, Sliding Window +1· 1 company
1110. Delete Nodes And Return ForestVideo
Solution72.4%Medium
Array, Binary Tree +3· 4 companies
1123. Lowest Common Ancestor of Deepest LeavesVideo
Solution79.5%Medium
Binary Tree, Breadth-First Search +3· 4 companies
1124. Longest Well-Performing IntervalVideo
Solution38.5%Medium
Array, Hash Table +3· 2 companies
1138. Alphabet Board PathVideo
Solution52.1%Medium
Hash Table, String· 1 company
1146. Snapshot ArrayVideo
Solution36.8%Medium
Array, Binary Search +2· 20 companies
1152. Analyze User Website Visit PatternVideoPremium
Solution44.3%Medium
Array, Hash Table +1· 5 companies
1156. Swap For Longest Repeated Character SubstringVideo
Solution44.9%Medium
Hash Table, Sliding Window +1· 2 companies
1166. Design File SystemVideoPremium
Solution65.1%Medium
Design, Hash Table +2· 12 companies
1169. Invalid TransactionsVideo
Solution32.7%Medium
Array, Hash Table +2· 7 companies
1170. Compare Strings by Frequency of the Smallest CharacterVideo
Solution63.3%Medium
Array, Binary Search +3· 1 company
1171. Remove Zero Sum Consecutive Nodes from Linked ListVideo
Solution53.3%Medium
Hash Table, Linked List· 6 companies
1177. Can Make Palindrome from SubstringVideo
Solution42.0%Medium
Array, Bit Manipulation +3· 1 company
1181. Before and After PuzzleVideoPremium
Solution51.8%Medium
Array, Hash Table +2· 1 company
1198. Find Smallest Common Element in All RowsVideoPremium
Solution76.5%Medium
Array, Binary Search +3· 2 companies
1202. Smallest String With SwapsVideo
Solution61.0%Medium
Array, Breadth-First Search +5· 8 companies
1218. Longest Arithmetic Subsequence of Given DifferenceVideo
Solution54.5%Medium
Array, Dynamic Programming +1· 2 companies
1244. Design A LeaderboardVideoPremium
Solution67.9%Medium
Design, Hash Table +1· 9 companies
1248. Count Number of Nice SubarraysVideo
Solution75.5%Medium
Array, Hash Table +3· 9 companies
1257. Smallest Common RegionVideoPremium
Solution68.6%Medium
Array, Breadth-First Search +4· 1 company
1258. Synonymous SentencesVideoPremium
Solution57.2%Medium
Array, Backtracking +3· 3 companies
1261. Find Elements in a Contaminated Binary TreeVideo
Solution84.1%Medium
Binary Tree, Breadth-First Search +4· 2 companies
1282. Group the People Given the Group Size They Belong ToVideo
Solution87.4%Medium
Array, Greedy +1· 5 companies
1296. Divide Array in Sets of K Consecutive NumbersVideo
Solution59.2%Medium
Array, Greedy +2· 2 companies
Showing 101–150 of 473