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Problems

1,212 problems

Has videoPremium onlyReset
Array1,212Hash Table473String437Math331Greedy330Dynamic Programming327Sorting302Depth-First Search208Binary Search189Breadth-First Search166Matrix163Tree158Prefix Sum155Two Pointers150Database137All topics

Medium · 1,212 results

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TitleSolutionAcceptDifficultyTopics
204. Count PrimesVideo
Solution35.8%Medium
Array, Enumeration +2· 17 companies
209. Minimum Size Subarray SumVideo
Solution53.1%Medium
Array, Binary Search +2· 18 companies
213. House Robber IIVideo
Solution45.3%Medium
Array, Dynamic Programming· 19 companies
215. Kth Largest Element in an ArrayVideo
Solution69.4%Medium
Array, Divide and Conquer +3· 41 companies
216. Combination Sum IIIVideo
Solution73.6%Medium
Array, Backtracking· 4 companies
221. Maximal SquareVideo
Solution50.7%Medium
Array, Dynamic Programming +1· 28 companies
229. Majority Element IIVideo
Solution56.5%Medium
Array, Counting +2· 9 companies
238. Product of Array Except SelfVideo
Solution69.3%Medium
Array, Prefix Sum· 40 companies
240. Search a 2D Matrix IIVideo
Solution58.2%Medium
Array, Binary Search +2· 16 companies
244. Shortest Word Distance IIVideoPremium
Solution62.8%Medium
Array, Design +3· 4 companies
245. Shortest Word Distance IIIVideoPremium
Solution59.4%Medium
Array, String· 2 companies
247. Strobogrammatic Number IIVideoPremium
Solution53.5%Medium
Array, Recursion +1· 2 companies
249. Group Shifted StringsVideoPremium
Solution67.8%Medium
Array, Hash Table +1· 4 companies
251. Flatten 2D VectorVideoPremium
Solution50.5%Medium
Array, Design +2· 4 companies
253. Meeting Rooms IIVideoPremium
Solution52.6%Medium
Array, Greedy +4· 42 companies
255. Verify Preorder Sequence in Binary Search TreeVideoPremium
Solution51.7%Medium
Array, Binary Search Tree +5· 5 companies
256. Paint HouseVideoPremium
Solution64.3%Medium
Array, Dynamic Programming· 8 companies
259. 3Sum SmallerVideoPremium
Solution51.4%Medium
Array, Binary Search +2· 7 companies
260. Single Number IIIVideo
Solution70.2%Medium
Array, Bit Manipulation· 7 companies
271. Encode and Decode StringsVideoPremium
Solution51.9%Medium
Array, Design +1· 11 companies
274. H-IndexVideo
Solution41.8%Medium
Array, Counting Sort +1· 8 companies
275. H-Index IIVideo
Solution40.0%Medium
Array, Binary Search· 1 company
280. Wiggle SortVideoPremium
Solution68.5%Medium
Array, Greedy +1· 4 companies
281. Zigzag IteratorVideoPremium
Solution67.1%Medium
Array, Design +2· 5 companies
284. Peeking IteratorVideo
Solution61.9%Medium
Array, Design +1· 3 companies
286. Walls and GatesVideoPremium
Solution63.9%Medium
Array, Breadth-First Search +1· 11 companies
287. Find the Duplicate NumberVideo
Solution64.7%Medium
Array, Binary Search +2· 22 companies
288. Unique Word AbbreviationVideoPremium
Solution28.1%Medium
Array, Design +2· 1 company
289. Game of LifeVideo
Solution73.0%Medium
Array, Matrix +1· 15 companies
300. Longest Increasing SubsequenceVideo
Solution59.8%Medium
Array, Binary Search +1· 30 companies
304. Range Sum Query 2D - ImmutableVideo
Solution59.2%Medium
Array, Design +2· 10 companies
307. Range Sum Query - MutableVideo
Solution43.9%Medium
Array, Binary Indexed Tree +2· 4 companies
308. Range Sum Query 2D - MutableVideoPremium
Solution46.0%Medium
Array, Binary Indexed Tree +3· 3 companies
309. Best Time to Buy and Sell Stock with CooldownVideo
Solution62.4%Medium
Array, Dynamic Programming· 8 companies
311. Sparse Matrix MultiplicationVideoPremium
Solution69.3%Medium
Array, Hash Table +1· 9 companies
313. Super Ugly NumberVideo
Solution46.6%Medium
Array, Dynamic Programming +1· 5 companies
318. Maximum Product of Word LengthsVideo
Solution61.7%Medium
Array, Bit Manipulation +1· 2 companies
322. Coin ChangeVideo
Solution49.3%Medium
Array, Breadth-First Search +1· 40 companies
324. Wiggle Sort IIVideo
Solution38.4%Medium
Array, Divide and Conquer +3· 4 companies
325. Maximum Size Subarray Sum Equals kVideoPremium
Solution50.8%Medium
Array, Hash Table +1· 8 companies
334. Increasing Triplet SubsequenceVideo
Solution39.3%Medium
Array, Greedy· 7 companies
347. Top K Frequent ElementsVideo
Solution67.3%Medium
Array, Bucket Sort +6· 53 companies
348. Design Tic-Tac-ToeVideoPremium
Solution58.8%Medium
Array, Design +3· 13 companies
353. Design Snake GameVideoPremium
Solution40.0%Medium
Array, Design +3· 10 companies
356. Line ReflectionVideoPremium
Solution36.3%Medium
Array, Hash Table +1· 2 companies
360. Sort Transformed ArrayVideoPremium
Solution58.0%Medium
Array, Math +2· 3 companies
361. Bomb EnemyVideoPremium
Solution52.8%Medium
Array, Dynamic Programming +1· 2 companies
362. Design Hit CounterVideoPremium
Solution69.6%Medium
Array, Binary Search +3· 25 companies
368. Largest Divisible SubsetVideo
Solution50.1%Medium
Array, Dynamic Programming +2· 6 companies
370. Range AdditionVideoPremium
Solution73.0%Medium
Array, Prefix Sum· 2 companies
Showing 51–100 of 1,212