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1,212 problems

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Array1,212 Hash Table473 String437 Math331 Greedy330 Dynamic Programming327 Sorting302 Depth-First Search208 Binary Search189 Breadth-First Search166 Matrix163 Tree158 Prefix Sum155 Two Pointers150 Database137 All topics

Medium · 1,212 results

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TitleSolutionAcceptDifficultyTopics

1248. Count Number of Nice SubarraysVideo

Solution75.5%Medium

Array, Hash Table +3· 9 companies

1253. Reconstruct a 2-Row Binary MatrixVideo

Solution49.4%Medium

Array, Greedy +1· 1 company

1254. Number of Closed IslandsVideo

Solution67.7%Medium

Array, Breadth-First Search +3· 5 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

1262. Greatest Sum Divisible by ThreeVideo

Solution57.1%Medium

Array, Dynamic Programming +2· 7 companies

1267. Count Servers that CommunicateVideo

Solution73.5%Medium

Array, Breadth-First Search +4· 6 companies

1268. Search Suggestions SystemVideo

Solution65.1%Medium

Array, Binary Search +4· 19 companies

1272. Remove IntervalVideoPremium

Solution67.2%Medium

Array· 1 company

1273. Delete Tree NodesVideoPremium

Solution61.2%Medium

Array, Breadth-First Search +2· 1 company

1277. Count Square Submatrices with All OnesVideo

Solution80.7%Medium

Array, Dynamic Programming +1· 6 companies

1282. Group the People Given the Group Size They Belong ToVideo

Solution87.4%Medium

Array, Greedy +1· 5 companies

1283. Find the Smallest Divisor Given a ThresholdVideo

Solution66.8%Medium

Array, Binary Search· 12 companies

1288. Remove Covered IntervalsVideo

Solution60.1%Medium

Array, Sorting· 5 companies

1292. Maximum Side Length of a Square with Sum Less than or Equal to ThresholdVideo

Solution65.4%Medium

Array, Binary Search +2· 4 companies

1296. Divide Array in Sets of K Consecutive NumbersVideo

Solution59.2%Medium

Array, Greedy +2· 2 companies

1300. Sum of Mutated Array Closest to TargetVideo

Solution46.8%Medium

Array, Binary Search +1· 2 companies

1306. Jump Game IIIVideo

Solution70.1%Medium

Array, Breadth-First Search +1· 3 companies

1310. XOR Queries of a SubarrayVideo

Solution78.1%Medium

Array, Bit Manipulation +1· 3 companies

1311. Get Watched Videos by Your FriendsVideo

Solution54.2%Medium

Array, Breadth-First Search +3· 3 companies

1314. Matrix Block SumVideo

Solution77.0%Medium

Array, Matrix +1· 3 companies

1324. Print Words VerticallyVideo

Solution68.1%Medium

Array, Simulation +1· 2 companies

1329. Sort the Matrix DiagonallyVideo

Solution82.9%Medium

Array, Matrix +1· 4 companies

1333. Filter Restaurants by Vegan-Friendly, Price and DistanceVideo

Solution64.2%Medium

Array, Sorting· 1 company

1338. Reduce Array Size to The HalfVideo

Solution69.5%Medium

Array, Greedy +3· 1 company

1343. Number of Sub-arrays of Size K and Average Greater than or Equal to ThresholdVideo

Solution74.3%Medium

Array, Sliding Window· 5 companies

1352. Product of the Last K NumbersVideo

Solution62.9%Medium

Array, Data Stream +3· 11 companies

1353. Maximum Number of Events That Can Be AttendedVideo

Solution38.9%Medium

Array, Greedy +2· 16 companies

1357. Apply Discount Every n OrdersVideo

Solution66.1%Medium

Array, Design +1· 1 company

1366. Rank Teams by VotesVideo

Solution60.1%Medium

Array, Counting +3· 7 companies

1375. Number of Times Binary String Is Prefix-AlignedVideo

Solution66.3%Medium

Array· 1 company

1381. Design a Stack With Increment OperationVideo

Solution79.9%Medium

Array, Design +1· 6 companies

1386. Cinema Seat AllocationVideo

Solution56.8%Medium

Array, Bit Manipulation +2· 5 companies

1390. Four DivisorsVideo

Solution56.6%Medium

Array, Math· 6 companies

1391. Check if There is a Valid Path in a GridVideo

Solution64.5%Medium

Array, Breadth-First Search +3· 3 companies

1395. Count Number of TeamsVideo

Solution70.1%Medium

Array, Binary Indexed Tree +2· 4 companies

1409. Queries on a Permutation With KeyVideo

Solution84.9%Medium

Array, Binary Indexed Tree +1· 1 company

1418. Display Table of Food Orders in a RestaurantVideo

Solution76.5%Medium

Array, Hash Table +3· 2 companies

1423. Maximum Points You Can Obtain from CardsVideo

Solution58.1%Medium

Array, Prefix Sum +1· 11 companies

1424. Diagonal Traverse IIVideo

Solution58.3%Medium

Array, Heap (Priority Queue) +1· 5 companies

1428. Leftmost Column with at Least a OneVideoPremium

Solution55.3%Medium

Array, Binary Search +2· 3 companies

1429. First Unique NumberVideoPremium

Solution57.8%Medium

Array, Data Stream +3· 5 companies

1438. Longest Continuous Subarray With Absolute Diff Less Than or Equal to LimitVideo

Solution58.1%Medium

Array, Heap (Priority Queue) +4· 15 companies

1441. Build an Array With Stack OperationsVideo

Solution81.0%Medium

Array, Simulation +1· 4 companies

1442. Count Triplets That Can Form Two Arrays of Equal XORVideo

Solution84.9%Medium

Array, Bit Manipulation +3· 2 companies

1452. People Whose List of Favorite Companies Is Not a Subset of Another ListVideo

Solution60.6%Medium

Array, Hash Table +1· 2 companies

1465. Maximum Area of a Piece of Cake After Horizontal and Vertical CutsVideo

Solution41.1%Medium

Array, Greedy +1· 4 companies

1471. The k Strongest Values in an ArrayVideo

Solution62.6%Medium

Array, Sorting +1· 1 company

1472. Design Browser HistoryVideo

Solution78.3%Medium

Array, Data Stream +4· 13 companies

1476. Subrectangle QueriesVideo

Solution86.3%Medium

Array, Design +1· 3 companies

Showing 351–400 of 1,212