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Problems

4,009 problems

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

With video · 4,009 results

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TitleSolutionAcceptDifficultyTopics
1351. Count Negative Numbers in a Sorted MatrixVideo
Solution79.6%Easy
Array, Binary Search +1· 6 companies
1352. Product of the Last K NumbersVideo
Solution62.9%Medium
Array, Data Stream +3· 11 companies
1353. Maximum Number of Events That Can Be AttendedVideo
Solution38.9%Medium
Array, Greedy +2· 16 companies
1354. Construct Target Array With Multiple SumsVideo
Solution36.8%Hard
Array, Heap (Priority Queue)· 1 company
1355. Activity ParticipantsVideoPremium
Solution72.3%Medium
Database· 1 company
1356. Sort Integers by The Number of 1 BitsVideo
Solution82.3%Easy
Array, Bit Manipulation +2· 4 companies
1357. Apply Discount Every n OrdersVideo
Solution66.1%Medium
Array, Design +1· 1 company
1358. Number of Substrings Containing All Three CharactersVideo
Solution74.4%Medium
Hash Table, Sliding Window +1· 6 companies
1359. Count All Valid Pickup and Delivery OptionsVideo
Solution64.9%Hard
Combinatorics, Dynamic Programming +1· 3 companies
1360. Number of Days Between Two DatesVideo
Solution53.7%Easy
Math, String· 4 companies
1361. Validate Binary Tree NodesVideo
Solution44.3%Medium
Binary Tree, Breadth-First Search +4· 3 companies
1362. Closest DivisorsVideo
Solution64.3%Medium
Math· 1 company
1363. Largest Multiple of ThreeVideo
Solution33.2%Hard
Array, Dynamic Programming +1· 1 company
1364. Number of Trusted Contacts of a CustomerVideoPremium
Solution74.9%Medium
Database· 1 company
1365. How Many Numbers Are Smaller Than the Current NumberVideo
Solution87.0%Easy
Array, Counting +2· 6 companies
1366. Rank Teams by VotesVideo
Solution60.1%Medium
Array, Counting +3· 7 companies
1367. Linked List in Binary TreeVideo
Solution52.1%Medium
Binary Tree, Depth-First Search +2· 5 companies
1368. Minimum Cost to Make at Least One Valid Path in a GridVideo
Solution70.9%Hard
Array, Breadth-First Search +4· 8 companies
1369. Get the Second Most Recent ActivityVideoPremium
Solution67.5%Hard
Database· 1 company
1370. Increasing Decreasing StringVideo
Solution77.3%Easy
Counting, Hash Table +1· 3 companies
1371. Find the Longest Substring Containing Vowels in Even CountsVideo
Solution75.7%Medium
Bit Manipulation, Hash Table +2· 6 companies
1372. Longest ZigZag Path in a Binary TreeVideo
Solution67.0%Medium
Binary Tree, Depth-First Search +2· 2 companies
1373. Maximum Sum BST in Binary TreeVideo
Solution48.9%Hard
Binary Search Tree, Binary Tree +3· 5 companies
1374. Generate a String With Characters That Have Odd CountsVideo
Solution78.7%Easy
String· 1 company
1375. Number of Times Binary String Is Prefix-AlignedVideo
Solution66.3%Medium
Array· 1 company
1376. Time Needed to Inform All EmployeesVideo
Solution60.6%Medium
Breadth-First Search, Depth-First Search +1· 5 companies
1377. Frog Position After T SecondsVideo
Solution38.8%Hard
Breadth-First Search, Depth-First Search +2· 2 companies
1378. Replace Employee ID With The Unique IdentifierVideo
Solution83.6%Easy
Database· 9 companies
1379. Find a Corresponding Node of a Binary Tree in a Clone of That TreeVideo
Solution85.9%Easy
Binary Tree, Breadth-First Search +2· 1 company
1380. Lucky Numbers in a MatrixVideo
Solution79.9%Easy
Array, Matrix· 3 companies
1381. Design a Stack With Increment OperationVideo
Solution79.9%Medium
Array, Design +1· 6 companies
1382. Balance a Binary Search TreeVideo
Solution86.3%Medium
Binary Search Tree, Binary Tree +4· 5 companies
1383. Maximum Performance of a TeamVideo
Solution48.2%Hard
Array, Greedy +2· 7 companies
1384. Total Sales Amount by YearVideoPremium
Solution61.0%Hard
Database
1385. Find the Distance Value Between Two ArraysVideo
Solution72.1%Easy
Array, Binary Search +2· 5 companies
1386. Cinema Seat AllocationVideo
Solution56.8%Medium
Array, Bit Manipulation +2· 5 companies
1387. Sort Integers by The Power ValueVideo
Solution71.6%Medium
Dynamic Programming, Memoization +1· 2 companies
1388. Pizza With 3n SlicesVideo
Solution54.4%Hard
Array, Dynamic Programming +2· 1 company
1389. Create Target Array in the Given OrderVideo
Solution86.6%Easy
Array, Simulation· 5 companies
1390. Four DivisorsVideo
Solution56.6%Medium
Array, Math· 6 companies
1391. Check if There is a Valid Path in a GridVideo
Solution64.5%Medium
Array, Breadth-First Search +3· 3 companies
1392. Longest Happy PrefixVideo
Solution54.1%Hard
Hash Function, Rolling Hash +2· 6 companies
1393. Capital Gain/LossVideo
Solution84.7%Medium
Database· 2 companies
1394. Find Lucky Integer in an ArrayVideo
Solution75.5%Easy
Array, Counting +1· 6 companies
1395. Count Number of TeamsVideo
Solution70.1%Medium
Array, Binary Indexed Tree +2· 4 companies
1396. Design Underground SystemVideo
Solution74.8%Medium
Design, Hash Table +1· 7 companies
1397. Find All Good StringsVideo
Solution46.4%Hard
Dynamic Programming, String +1· 2 companies
1398. Customers Who Bought Products A and B but Not CVideoPremium
Solution71.2%Medium
Database· 1 company
1399. Count Largest GroupVideo
Solution74.7%Easy
Hash Table, Math· 5 companies
1400. Construct K Palindrome StringsVideo
Solution68.6%Medium
Counting, Greedy +2· 6 companies
Showing 1,351–1,400 of 4,009