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Problems

578 problems

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Array578Dynamic Programming332String191Math187Binary Search136Hash Table134Sorting106Greedy104Bit Manipulation103Graph96Depth-First Search91Heap (Priority Queue)78Prefix Sum77Matrix75Breadth-First Search71All topics

Hard · 578 results

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TitleSolutionAcceptDifficultyTopics
943. Find the Shortest SuperstringVideo
Solution45.8%Hard
Array, Bit Manipulation +3· 2 companies
952. Largest Component Size by Common FactorVideo
Solution43.8%Hard
Array, Hash Table +3· 2 companies
956. Tallest BillboardVideo
Solution52.0%Hard
Array, Dynamic Programming· 6 companies
960. Delete Columns to Make Sorted IIIVideo
Solution72.7%Hard
Array, Dynamic Programming +1· 2 companies
975. Odd Even JumpVideo
Solution41.7%Hard
Array, Dynamic Programming +3· 3 companies
980. Unique Paths IIIVideo
Solution82.8%Hard
Array, Backtracking +2· 7 companies
982. Triples with Bitwise AND Equal To ZeroVideo
Solution60.7%Hard
Array, Bit Manipulation +1· 2 companies
992. Subarrays with K Different IntegersVideo
Solution69.0%Hard
Array, Counting +2· 18 companies
995. Minimum Number of K Consecutive Bit FlipsVideo
Solution62.7%Hard
Array, Bit Manipulation +3· 2 companies
996. Number of Squareful ArraysVideo
Solution51.9%Hard
Array, Backtracking +5· 2 companies
1000. Minimum Cost to Merge StonesVideo
Solution47.0%Hard
Array, Dynamic Programming +1· 4 companies
1001. Grid IlluminationVideo
Solution39.7%Hard
Array, Hash Table· 1 company
1032. Stream of CharactersVideo
Solution52.8%Hard
Array, Data Stream +3· 4 companies
1036. Escape a Large MazeVideo
Solution37.0%Hard
Array, Breadth-First Search +2· 4 companies
1063. Number of Valid SubarraysVideoPremium
Solution79.9%Hard
Array, Monotonic Stack +1· 1 company
1074. Number of Submatrices That Sum to TargetVideo
Solution74.4%Hard
Array, Hash Table +2· 4 companies
1095. Find in Mountain ArrayVideo
Solution41.9%Hard
Array, Binary Search +1· 6 companies
1121. Divide Array Into Increasing SequencesVideoPremium
Solution65.4%Hard
Array, Counting· 1 company
1125. Smallest Sufficient TeamVideo
Solution55.5%Hard
Array, Bit Manipulation +2· 1 company
1157. Online Majority Element In SubarrayVideo
Solution40.9%Hard
Array, Binary Indexed Tree +3· 1 company
1178. Number of Valid Words for Each PuzzleVideo
Solution47.8%Hard
Array, Bit Manipulation +3· 1 company
1187. Make Array Strictly IncreasingVideo
Solution58.0%Hard
Array, Binary Search +2
1199. Minimum Time to Build BlocksVideoPremium
Solution49.2%Hard
Array, Greedy +2· 1 company
1210. Minimum Moves to Reach Target with RotationsVideo
Solution52.7%Hard
Array, Breadth-First Search +1· 1 company
1223. Dice Roll SimulationVideo
Solution51.4%Hard
Array, Dynamic Programming· 2 companies
1224. Maximum Equal FrequencyVideo
Solution38.8%Hard
Array, Hash Table· 1 company
1231. Divide ChocolateVideoPremium
Solution60.5%Hard
Array, Binary Search· 1 company
1235. Maximum Profit in Job SchedulingVideo
Solution54.8%Hard
Array, Binary Search +2· 22 companies
1246. Palindrome RemovalVideoPremium
Solution46.4%Hard
Array, Dynamic Programming· 1 company
1250. Check If It Is a Good ArrayVideo
Solution65.6%Hard
Array, Math +1· 5 companies
1255. Maximum Score Words Formed by LettersVideo
Solution81.9%Hard
Array, Backtracking +4· 3 companies
1263. Minimum Moves to Move a Box to Their Target LocationVideo
Solution49.7%Hard
Array, Breadth-First Search +2· 1 company
1274. Number of Ships in a RectangleVideoPremium
Solution68.7%Hard
Array, Divide and Conquer +1· 2 companies
1284. Minimum Number of Flips to Convert Binary Matrix to Zero MatrixVideo
Solution72.9%Hard
Array, Bit Manipulation +3· 1 company
1289. Minimum Falling Path Sum IIVideo
Solution63.2%Hard
Array, Dynamic Programming +1· 3 companies
1293. Shortest Path in a Grid with Obstacles EliminationVideo
Solution46.8%Hard
Array, Breadth-First Search +1· 14 companies
1298. Maximum Candies You Can Get from BoxesVideo
Solution67.2%Hard
Array, Breadth-First Search +1· 4 companies
1301. Number of Paths with Max ScoreVideo
Solution63.4%Hard
Array, Dynamic Programming +1· 4 companies
1307. Verbal Arithmetic PuzzleVideo
Solution33.5%Hard
Array, Backtracking +2· 3 companies
1326. Minimum Number of Taps to Open to Water a GardenVideo
Solution50.7%Hard
Array, Dynamic Programming +1· 13 companies
1330. Reverse Subarray To Maximize Array ValueVideo
Solution44.7%Hard
Array, Greedy +1
1335. Minimum Difficulty of a Job ScheduleVideo
Solution59.6%Hard
Array, Dynamic Programming· 7 companies
1340. Jump Game VVideo
Solution75.7%Hard
Array, Dynamic Programming +1· 2 companies
1345. Jump Game IVVideo
Solution50.9%Hard
Array, Breadth-First Search +1· 4 companies
1349. Maximum Students Taking ExamVideo
Solution54.8%Hard
Array, Bit Manipulation +3· 3 companies
1354. Construct Target Array With Multiple SumsVideo
Solution36.8%Hard
Array, Heap (Priority Queue)· 1 company
1363. Largest Multiple of ThreeVideo
Solution33.2%Hard
Array, Dynamic Programming +1· 1 company
1368. Minimum Cost to Make at Least One Valid Path in a GridVideo
Solution70.9%Hard
Array, Breadth-First Search +4· 8 companies
1383. Maximum Performance of a TeamVideo
Solution48.2%Hard
Array, Greedy +2· 7 companies
1388. Pizza With 3n SlicesVideo
Solution54.4%Hard
Array, Dynamic Programming +2· 1 company
Showing 101–150 of 578