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Problems

4,005 problems

Has videoPremium onlyReset
Array2,209String870Hash Table786Math682Dynamic Programming666Sorting504Greedy480Binary Search352Depth-First Search335Database303Bit Manipulation283Matrix278Tree261Breadth-First Search255Two Pointers249All topics

With video · 4,005 results

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TitleSolutionAcceptDifficultyTopics
251. Flatten 2D VectorVideoPremium
Solution50.5%Medium
Array, Design +2· 4 companies
252. Meeting RoomsVideoPremium
Solution59.4%Easy
Array, Sorting· 10 companies
253. Meeting Rooms IIVideoPremium
Solution52.6%Medium
Array, Greedy +4· 42 companies
254. Factor CombinationsVideoPremium
Solution50.5%Medium
Backtracking· 2 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
257. Binary Tree PathsVideo
Solution69.5%Easy
Backtracking, Binary Tree +3· 8 companies
258. Add DigitsVideo
Solution69.3%Easy
Math, Number Theory +1· 10 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
261. Graph Valid TreeVideoPremium
Solution49.9%Medium
Breadth-First Search, Depth-First Search +2· 9 companies
262. Trips and UsersVideo
Solution39.4%Hard
Database· 5 companies
263. Ugly NumberVideo
Solution43.9%Easy
Math· 8 companies
264. Ugly Number IIVideo
Solution49.7%Medium
Dynamic Programming, Hash Table +2· 9 companies
265. Paint House IIVideoPremium
Solution57.0%Hard
Array, Dynamic Programming· 2 companies
266. Palindrome PermutationVideoPremium
Solution68.6%Easy
Bit Manipulation, Hash Table +1· 5 companies
267. Palindrome Permutation IIVideoPremium
Solution41.9%Medium
Backtracking, Hash Table +1
268. Missing NumberVideo
Solution72.4%Easy
Array, Binary Search +4· 19 companies
269. Alien DictionaryVideoPremium
Solution37.1%Hard
Array, Breadth-First Search +4· 18 companies
270. Closest Binary Search Tree ValueVideoPremium
Solution49.2%Easy
Binary Search, Binary Search Tree +3· 7 companies
271. Encode and Decode StringsVideoPremium
Solution51.9%Medium
Array, Design +1· 11 companies
272. Closest Binary Search Tree Value IIVideoPremium
Solution61.1%Hard
Binary Search Tree, Binary Tree +5· 3 companies
273. Integer to English WordsVideo
Solution34.9%Hard
Math, Recursion +1· 24 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
276. Paint FenceVideoPremium
Solution48.3%Medium
Dynamic Programming· 4 companies
277. Find the CelebrityVideoPremium
Solution48.9%Medium
Graph, Interactive +1· 12 companies
278. First Bad VersionVideo
Solution47.5%Easy
Binary Search, Interactive· 7 companies
279. Perfect SquaresVideo
Solution57.0%Medium
Breadth-First Search, Dynamic Programming +1· 12 companies
280. Wiggle SortVideoPremium
Solution68.5%Medium
Array, Greedy +1· 4 companies
281. Zigzag IteratorVideoPremium
Solution67.1%Medium
Array, Design +2· 5 companies
282. Expression Add OperatorsVideo
Solution43.5%Hard
Backtracking, Math +1· 7 companies
283. Move ZeroesVideo
Solution64.3%Easy
Array, Two Pointers· 46 companies
284. Peeking IteratorVideo
Solution61.9%Medium
Array, Design +1· 3 companies
285. Inorder Successor in BSTVideoPremium
Solution51.2%Medium
Binary Search Tree, Binary Tree +2· 6 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
290. Word PatternVideo
Solution44.5%Easy
Hash Table, String· 9 companies
291. Word Pattern IIVideoPremium
Solution49.1%Medium
Backtracking, Hash Table +1· 6 companies
292. Nim GameVideo
Solution60.6%Easy
Brainteaser, Game Theory +1· 6 companies
293. Flip GameVideoPremium
Solution64.8%Easy
String· 1 company
294. Flip Game IIVideoPremium
Solution52.2%Medium
Backtracking, Dynamic Programming +3· 2 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
297. Serialize and Deserialize Binary TreeVideo
Solution61.1%Hard
Binary Tree, Breadth-First Search +4· 23 companies
298. Binary Tree Longest Consecutive SequenceVideoPremium
Solution54.7%Medium
Binary Tree, Depth-First Search +1· 4 companies
299. Bulls and CowsVideo
Solution52.9%Medium
Counting, Hash Table +1· 7 companies
300. Longest Increasing SubsequenceVideo
Solution59.8%Medium
Array, Binary Search +1· 30 companies
Showing 251–300 of 4,005