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Problems

797 problems

Has videoPremium onlyReset
Array2,237String877Hash Table797Math691Dynamic Programming673Sorting508Greedy485Binary Search357Depth-First Search338Database308Bit Manipulation286Matrix279Tree264Breadth-First Search257Prefix Sum252All topics

797 results

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TitleSolutionAcceptDifficultyTopics
1001. Grid IlluminationVideo
Solution39.7%Hard
Array, Hash Table· 1 company
1002. Find Common CharactersVideo
Solution74.6%Easy
Array, Hash Table +1· 6 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
1036. Escape a Large MazeVideo
Solution37.0%Hard
Array, Breadth-First Search +2· 4 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
1074. Number of Submatrices That Sum to TargetVideo
Solution74.4%Hard
Array, Hash Table +2· 4 companies
1079. Letter Tile PossibilitiesVideo
Solution83.5%Medium
Backtracking, Counting +2· 5 companies
1086. High FiveVideoPremium
Solution74.5%Easy
Array, Hash Table +2· 2 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
1122. Relative Sort ArrayVideo
Solution75.4%Easy
Array, Counting Sort +2· 6 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
1128. Number of Equivalent Domino PairsVideo
Solution60.7%Easy
Array, Counting +1· 3 companies
1133. Largest Unique NumberVideoPremium
Solution71.3%Easy
Array, Hash Table +1· 1 company
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
1153. String Transforms Into Another StringVideoPremium
Solution34.9%Hard
Hash Table, String· 1 company
1156. Swap For Longest Repeated Character SubstringVideo
Solution44.9%Medium
Hash Table, Sliding Window +1· 2 companies
1160. Find Words That Can Be Formed by CharactersVideo
Solution71.5%Easy
Array, Counting +2· 7 companies
1165. Single-Row KeyboardVideoPremium
Solution87.6%Easy
Hash Table, String· 1 company
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
1172. Dinner Plate StacksVideo
Solution34.2%Hard
Design, Hash Table +2· 2 companies
1177. Can Make Palindrome from SubstringVideo
Solution42.0%Medium
Array, Bit Manipulation +3· 1 company
1178. Number of Valid Words for Each PuzzleVideo
Solution47.8%Hard
Array, Bit Manipulation +3· 1 company
1181. Before and After PuzzleVideoPremium
Solution51.8%Medium
Array, Hash Table +2· 1 company
1189. Maximum Number of BalloonsVideo
Solution64.1%Easy
Counting, Hash Table +1· 6 companies
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
1207. Unique Number of OccurrencesVideo
Solution78.7%Easy
Array, Hash Table· 5 companies
1213. Intersection of Three Sorted ArraysVideoPremium
Solution80.2%Easy
Array, Binary Search +2· 2 companies
1218. Longest Arithmetic Subsequence of Given DifferenceVideo
Solution54.5%Medium
Array, Dynamic Programming +1· 2 companies
1224. Maximum Equal FrequencyVideo
Solution38.8%Hard
Array, Hash Table· 1 company
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
1275. Find Winner on a Tic Tac Toe GameVideo
Solution54.6%Easy
Array, Hash Table +2· 7 companies
1282. Group the People Given the Group Size They Belong ToVideo
Solution87.4%Medium
Array, Greedy +1· 5 companies
1284. Minimum Number of Flips to Convert Binary Matrix to Zero MatrixVideo
Solution72.9%Hard
Array, Bit Manipulation +3· 1 company
Showing 201–250 of 797