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447 problems

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Array447 String248 Hash Table189 Math173 Database113 Sorting100 Simulation93 Two Pointers70 Counting69 Bit Manipulation54 Greedy51 Matrix41 Tree40 Depth-First Search39 Binary Tree37 All topics

Easy · With video · 447 results

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TitleSolutionAcceptDifficultyTopics

1. Two SumVideo

Solution57.8%Easy

Array, Hash Table· 127 companies

26. Remove Duplicates from Sorted ArrayVideo

Solution63.7%Easy

Array, Two Pointers· 26 companies

27. Remove ElementVideo

Solution62.2%Easy

Array, Two Pointers· 10 companies

35. Search Insert PositionVideo

Solution52.1%Easy

Array, Binary Search· 12 companies

66. Plus OneVideo

Solution50.3%Easy

Array, Math· 13 companies

88. Merge Sorted ArrayVideo

Solution55.7%Easy

Array, Sorting +1· 37 companies

108. Convert Sorted Array to Binary Search TreeVideo

Solution75.9%Easy

Array, Binary Search Tree +3· 9 companies

118. Pascal's TriangleVideo

Solution79.4%Easy

Array, Dynamic Programming· 17 companies

119. Pascal's Triangle IIVideo

Solution67.8%Easy

Array, Dynamic Programming· 6 companies

121. Best Time to Buy and Sell StockVideo

Solution57.1%Easy

Array, Dynamic Programming· 92 companies

136. Single NumberVideo

Solution78.1%Easy

Array, Bit Manipulation· 15 companies

157. Read N Characters Given Read4VideoPremium

Solution42.5%Easy

Array, Interactive +1· 3 companies

163. Missing RangesVideoPremium

Solution35.5%Easy

Array· 2 companies

169. Majority ElementVideo

Solution66.2%Easy

Array, Counting +3· 22 companies

170. Two Sum III - Data structure designVideoPremium

Solution39.1%Easy

Array, Data Stream +3· 2 companies

217. Contains DuplicateVideo

Solution64.8%Easy

Array, Hash Table +1· 20 companies

219. Contains Duplicate IIVideo

Solution51.6%Easy

Array, Hash Table +1· 15 companies

228. Summary RangesVideo

Solution54.6%Easy

Array· 9 companies

243. Shortest Word DistanceVideoPremium

Solution66.3%Easy

Array, String· 8 companies

252. Meeting RoomsVideoPremium

Solution59.4%Easy

Array, Sorting· 10 companies

268. Missing NumberVideo

Solution72.4%Easy

Array, Binary Search +4· 19 companies

283. Move ZeroesVideo

Solution64.3%Easy

Array, Two Pointers· 46 companies

303. Range Sum Query - ImmutableVideo

Solution73.5%Easy

Array, Design +1· 8 companies

346. Moving Average from Data StreamVideoPremium

Solution80.2%Easy

Array, Data Stream +2· 11 companies

349. Intersection of Two ArraysVideo

Solution78.2%Easy

Array, Binary Search +3· 16 companies

350. Intersection of Two Arrays IIVideo

Solution60.4%Easy

Array, Binary Search +3· 9 companies

414. Third Maximum NumberVideo

Solution40.3%Easy

Array, Sorting· 9 companies

422. Valid Word SquareVideoPremium

Solution42.9%Easy

Array, Matrix· 1 company

448. Find All Numbers Disappeared in an ArrayVideo

Solution64.4%Easy

Array, Hash Table· 7 companies

455. Assign CookiesVideo

Solution55.4%Easy

Array, Greedy +2· 9 companies

463. Island PerimeterVideo

Solution74.3%Easy

Array, Breadth-First Search +2· 9 companies

485. Max Consecutive OnesVideo

Solution66.0%Easy

Array· 14 companies

495. Teemo AttackingVideo

Solution58.2%Easy

Array, Simulation· 5 companies

496. Next Greater Element IVideo

Solution76.5%Easy

Array, Hash Table +2· 17 companies

500. Keyboard RowVideo

Solution74.3%Easy

Array, Hash Table +1· 4 companies

506. Relative RanksVideo

Solution75.1%Easy

Array, Heap (Priority Queue) +1· 4 companies

561. Array PartitionVideo

Solution82.2%Easy

Array, Counting Sort +2· 5 companies

566. Reshape the MatrixVideo

Solution65.4%Easy

Array, Matrix +1· 5 companies

575. Distribute CandiesVideo

Solution71.5%Easy

Array, Hash Table· 3 companies

594. Longest Harmonious SubsequenceVideo

Solution65.1%Easy

Array, Counting +3· 7 companies

598. Range Addition IIVideo

Solution59.1%Easy

Array, Math· 3 companies

599. Minimum Index Sum of Two ListsVideo

Solution60.8%Easy

Array, Hash Table +1· 4 companies

604. Design Compressed String IteratorVideoPremium

Solution40.5%Easy

Array, Design +2· 1 company

605. Can Place FlowersVideo

Solution28.8%Easy

Array, Greedy· 16 companies

628. Maximum Product of Three NumbersVideo

Solution48.0%Easy

Array, Math +1· 15 companies

643. Maximum Average Subarray IVideo

Solution49.2%Easy

Array, Sliding Window· 12 companies

645. Set MismatchVideo

Solution43.4%Easy

Array, Bit Manipulation +2· 7 companies

661. Image SmootherVideo

Solution69.8%Easy

Array, Matrix· 6 companies

674. Longest Continuous Increasing SubsequenceVideo

Solution52.5%Easy

Array· 5 companies

682. Baseball GameVideo

Solution80.8%Easy

Array, Simulation +1· 6 companies

Showing 1–50 of 447