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Problems

2,133 problems

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

Medium · 2,133 results

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TitleSolutionAcceptDifficultyTopics
1167. Minimum Cost to Connect SticksVideoPremium
Solution71.8%Medium
Array, Greedy +1· 5 companies
1169. Invalid TransactionsVideo
Solution32.7%Medium
Array, Hash Table +2· 7 companies
1170. Compare Strings by Frequency of the Smallest CharacterVideo
Solution63.3%Medium
Array, Binary Search +3· 1 company
1171. Remove Zero Sum Consecutive Nodes from Linked ListVideo
Solution53.3%Medium
Hash Table, Linked List· 6 companies
1174. Immediate Food Delivery IIVideo
Solution57.3%Medium
Database· 8 companies
1177. Can Make Palindrome from SubstringVideo
Solution42.0%Medium
Array, Bit Manipulation +3· 1 company
1181. Before and After PuzzleVideoPremium
Solution51.8%Medium
Array, Hash Table +2· 1 company
1182. Shortest Distance to Target ColorVideoPremium
Solution56.5%Medium
Array, Binary Search +1· 1 company
1186. Maximum Subarray Sum with One DeletionVideo
Solution50.0%Medium
Array, Dynamic Programming· 4 companies
1188. Design Bounded Blocking QueueVideoPremium
Solution72.6%Medium
Concurrency· 3 companies
1190. Reverse Substrings Between Each Pair of ParenthesesVideo
Solution75.2%Medium
Stack, String· 7 companies
1191. K-Concatenation Maximum SumVideo
Solution26.5%Medium
Array, Dynamic Programming· 1 company
1193. Monthly Transactions IVideo
Solution60.1%Medium
Database· 7 companies
1195. Fizz Buzz MultithreadedVideo
Solution73.2%Medium
Concurrency· 4 companies
1197. Minimum Knight MovesVideoPremium
Solution41.8%Medium
Breadth-First Search· 13 companies
1198. Find Smallest Common Element in All RowsVideoPremium
Solution76.5%Medium
Array, Binary Search +3· 2 companies
1201. Ugly Number IIIVideo
Solution31.9%Medium
Binary Search, Combinatorics +2· 3 companies
1202. Smallest String With SwapsVideo
Solution61.0%Medium
Array, Breadth-First Search +5· 8 companies
1204. Last Person to Fit in the BusVideo
Solution70.2%Medium
Database· 6 companies
1205. Monthly Transactions IIVideoPremium
Solution41.8%Medium
Database· 1 company
1208. Get Equal Substrings Within BudgetVideo
Solution60.2%Medium
Binary Search, Prefix Sum +2· 4 companies
1209. Remove All Adjacent Duplicates in String IIVideo
Solution61.7%Medium
Stack, String· 18 companies
1212. Team Scores in Football TournamentVideoPremium
Solution55.6%Medium
Database· 1 company
1214. Two Sum BSTsVideoPremium
Solution68.2%Medium
Binary Search, Binary Search Tree +5· 1 company
1215. Stepping NumbersVideoPremium
Solution48.2%Medium
Backtracking, Breadth-First Search +1· 1 company
1218. Longest Arithmetic Subsequence of Given DifferenceVideo
Solution54.5%Medium
Array, Dynamic Programming +1· 2 companies
1219. Path with Maximum GoldVideo
Solution68.6%Medium
Array, Backtracking +1· 5 companies
1222. Queens That Can Attack the KingVideo
Solution72.6%Medium
Array, Matrix +1· 2 companies
1226. The Dining PhilosophersVideo
Solution54.5%Medium
Concurrency· 3 companies
1227. Airplane Seat Assignment ProbabilityVideo
Solution67.3%Medium
Brainteaser, Dynamic Programming +2· 2 companies
1229. Meeting SchedulerVideoPremium
Solution55.3%Medium
Array, Sorting +1· 11 companies
1230. Toss Strange CoinsVideoPremium
Solution58.1%Medium
Array, Dynamic Programming +2· 1 company
1233. Remove Sub-Folders from the FilesystemVideo
Solution78.6%Medium
Array, Depth-First Search +2· 8 companies
1234. Replace the Substring for Balanced StringVideo
Solution41.3%Medium
Sliding Window, String· 1 company
1236. Web CrawlerVideoPremium
Solution68.8%Medium
Breadth-First Search, Depth-First Search +2· 7 companies
1237. Find Positive Integer Solution for a Given EquationVideo
Solution70.3%Medium
Binary Search, Interactive +2· 2 companies
1238. Circular Permutation in Binary RepresentationVideo
Solution73.2%Medium
Backtracking, Bit Manipulation +1· 1 company
1239. Maximum Length of a Concatenated String with Unique CharactersVideo
Solution54.7%Medium
Array, Backtracking +2· 6 companies
1242. Web Crawler MultithreadedVideoPremium
–49.5%Medium
Breadth-First Search, Concurrency +1· 9 companies
1244. Design A LeaderboardVideoPremium
Solution67.9%Medium
Design, Hash Table +1· 9 companies
1245. Tree DiameterVideoPremium
Solution61.1%Medium
Breadth-First Search, Depth-First Search +3· 7 companies
1247. Minimum Swaps to Make Strings EqualVideo
Solution65.3%Medium
Greedy, Math +1· 4 companies
1248. Count Number of Nice SubarraysVideo
Solution75.5%Medium
Array, Hash Table +3· 9 companies
1249. Minimum Remove to Make Valid ParenthesesVideo
Solution71.3%Medium
Stack, String· 11 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
1256. Encode NumberVideoPremium
Solution70.0%Medium
Bit Manipulation, Math +1· 1 company
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
1261. Find Elements in a Contaminated Binary TreeVideo
Solution84.1%Medium
Binary Tree, Breadth-First Search +4· 2 companies
Showing 651–700 of 2,133