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Problems

508 problems

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

508 results

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TitleSolutionAcceptDifficultyTopics
15. 3SumVideo
Solution40.1%Medium
Array, Sorting +1· 57 companies
16. 3Sum ClosestVideo
Solution47.4%Medium
Array, Sorting +1· 11 companies
18. 4SumVideo
Solution42.0%Medium
Array, Sorting +1· 20 companies
49. Group AnagramsVideo
Solution73.0%Medium
Array, Hash Table +2· 87 companies
56. Merge IntervalsVideo
Solution52.6%Medium
Array, Sorting· 112 companies
75. Sort ColorsVideo
Solution69.9%Medium
Array, Sorting +1· 37 companies
88. Merge Sorted ArrayVideo
Solution55.7%Easy
Array, Sorting +1· 37 companies
147. Insertion Sort ListVideo
Solution60.5%Medium
Linked List, Sorting· 5 companies
148. Sort ListVideo
Solution65.2%Medium
Divide and Conquer, Linked List +3· 9 companies
164. Maximum GapVideo
Solution53.4%Medium
Array, Bucket Sort +2· 7 companies
169. Majority ElementVideo
Solution66.2%Easy
Array, Counting +3· 22 companies
179. Largest NumberVideo
Solution43.9%Medium
Array, Greedy +2· 23 companies
215. Kth Largest Element in an ArrayVideo
Solution69.4%Medium
Array, Divide and Conquer +3· 41 companies
217. Contains DuplicateVideo
Solution64.8%Easy
Array, Hash Table +1· 20 companies
220. Contains Duplicate IIIVideo
Solution25.2%Hard
Array, Bucket Sort +3· 8 companies
229. Majority Element IIVideo
Solution56.5%Medium
Array, Counting +2· 9 companies
242. Valid AnagramVideo
Solution68.5%Easy
Hash Table, Sorting +1· 40 companies
252. Meeting RoomsVideoPremium
Solution59.4%Easy
Array, Sorting· 10 companies
253. Meeting Rooms IIVideoPremium
Solution52.6%Medium
Array, Greedy +4· 42 companies
259. 3Sum SmallerVideoPremium
Solution51.4%Medium
Array, Binary Search +2· 7 companies
268. Missing NumberVideo
Solution72.4%Easy
Array, Binary Search +4· 19 companies
274. H-IndexVideo
Solution41.8%Medium
Array, Counting Sort +1· 8 companies
280. Wiggle SortVideoPremium
Solution68.5%Medium
Array, Greedy +1· 4 companies
295. Find Median from Data StreamVideo
Solution54.9%Hard
Data Stream, Design +3· 40 companies
296. Best Meeting PointVideoPremium
Solution61.1%Hard
Array, Math +2· 9 companies
314. Binary Tree Vertical Order TraversalVideoPremium
Solution57.8%Medium
Binary Tree, Breadth-First Search +4· 9 companies
324. Wiggle Sort IIVideo
Solution38.4%Medium
Array, Divide and Conquer +3· 4 companies
347. Top K Frequent ElementsVideo
Solution67.3%Medium
Array, Bucket Sort +6· 53 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
354. Russian Doll EnvelopesVideo
Solution37.8%Hard
Array, Binary Search +2· 13 companies
358. Rearrange String k Distance ApartVideoPremium
Solution39.9%Hard
Counting, Greedy +4· 4 companies
360. Sort Transformed ArrayVideoPremium
Solution58.0%Medium
Array, Math +2· 3 companies
368. Largest Divisible SubsetVideo
Solution50.1%Medium
Array, Dynamic Programming +2· 6 companies
378. Kth Smallest Element in a Sorted MatrixVideo
Solution65.1%Medium
Array, Binary Search +3· 10 companies
389. Find the DifferenceVideo
Solution60.8%Easy
Bit Manipulation, Hash Table +2· 6 companies
406. Queue Reconstruction by HeightVideo
Solution74.6%Medium
Array, Binary Indexed Tree +2· 5 companies
414. Third Maximum NumberVideo
Solution40.3%Easy
Array, Sorting· 9 companies
435. Non-overlapping IntervalsVideo
Solution57.5%Medium
Array, Dynamic Programming +2· 18 companies
436. Find Right IntervalVideo
Solution56.7%Medium
Array, Binary Search +1· 4 companies
451. Sort Characters By FrequencyVideo
Solution75.8%Medium
Bucket Sort, Counting +4· 16 companies
452. Minimum Number of Arrows to Burst BalloonsVideo
Solution61.9%Medium
Array, Greedy +1· 8 companies
455. Assign CookiesVideo
Solution55.4%Easy
Array, Greedy +2· 9 companies
462. Minimum Moves to Equal Array Elements IIVideo
Solution62.2%Medium
Array, Math +1· 5 companies
475. HeatersVideo
Solution42.3%Medium
Array, Binary Search +2· 12 companies
502. IPOVideo
Solution53.6%Hard
Array, Greedy +2· 9 companies
506. Relative RanksVideo
Solution75.1%Easy
Array, Heap (Priority Queue) +1· 4 companies
522. Longest Uncommon Subsequence IIVideo
Solution45.8%Medium
Array, Hash Table +3· 1 company
524. Longest Word in Dictionary through DeletingVideo
Solution53.2%Medium
Array, Sorting +2· 2 companies
527. Word AbbreviationVideoPremium
Solution62.7%Hard
Array, Greedy +3· 4 companies
Showing 1–50 of 508