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Problems

332 problems

Has videoPremium onlyReset
Array578Dynamic Programming332String191Math187Binary Search136Hash Table134Sorting106Greedy104Bit Manipulation103Graph96Depth-First Search91Heap (Priority Queue)78Prefix Sum77Matrix75Breadth-First Search71All topics

Hard · 332 results

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TitleSolutionAcceptDifficultyTopics
887. Super Egg DropVideo
Solution30.6%Hard
Binary Search, Dynamic Programming +1· 5 companies
902. Numbers At Most N Given Digit SetVideo
Solution45.9%Hard
Array, Binary Search +3· 4 companies
903. Valid Permutations for DI SequenceVideo
Solution56.9%Hard
Dynamic Programming, Prefix Sum +1
913. Cat and MouseVideo
Solution36.2%Hard
Dynamic Programming, Game Theory +4· 3 companies
920. Number of Music PlaylistsVideo
Solution60.3%Hard
Combinatorics, Dynamic Programming +1· 2 companies
940. Distinct Subsequences IIVideo
Solution56.7%Hard
Dynamic Programming, String· 2 companies
943. Find the Shortest SuperstringVideo
Solution45.8%Hard
Array, Bit Manipulation +3· 2 companies
956. Tallest BillboardVideo
Solution52.0%Hard
Array, Dynamic Programming· 6 companies
960. Delete Columns to Make Sorted IIIVideo
Solution72.7%Hard
Array, Dynamic Programming +1· 2 companies
964. Least Operators to Express NumberVideo
Solution48.3%Hard
Dynamic Programming, Math +1· 1 company
968. Binary Tree CamerasVideo
Solution48.3%Hard
Binary Tree, Depth-First Search +2· 14 companies
975. Odd Even JumpVideo
Solution41.7%Hard
Array, Dynamic Programming +3· 3 companies
996. Number of Squareful ArraysVideo
Solution51.9%Hard
Array, Backtracking +5· 2 companies
1000. Minimum Cost to Merge StonesVideo
Solution47.0%Hard
Array, Dynamic Programming +1· 4 companies
1012. Numbers With Repeated DigitsVideo
Solution48.9%Hard
Dynamic Programming, Math· 2 companies
1067. Digit Count in RangeVideoPremium
Solution46.4%Hard
Dynamic Programming, Math· 1 company
1092. Shortest Common Supersequence Video
Solution62.4%Hard
Dynamic Programming, String· 5 companies
1125. Smallest Sufficient TeamVideo
Solution55.5%Hard
Array, Bit Manipulation +2· 1 company
1147. Longest Chunked Palindrome DecompositionVideo
Solution58.6%Hard
Dynamic Programming, Greedy +4· 1 company
1187. Make Array Strictly IncreasingVideo
Solution58.0%Hard
Array, Binary Search +2
1216. Valid Palindrome IIIVideoPremium
Solution49.2%Hard
Dynamic Programming, String· 3 companies
1220. Count Vowels PermutationVideo
Solution61.7%Hard
Dynamic Programming· 1 company
1223. Dice Roll SimulationVideo
Solution51.4%Hard
Array, Dynamic Programming· 2 companies
1235. Maximum Profit in Job SchedulingVideo
Solution54.8%Hard
Array, Binary Search +2· 22 companies
1246. Palindrome RemovalVideoPremium
Solution46.4%Hard
Array, Dynamic Programming· 1 company
1255. Maximum Score Words Formed by LettersVideo
Solution81.9%Hard
Array, Backtracking +4· 3 companies
1259. Handshakes That Don't CrossVideoPremium
Solution61.1%Hard
Dynamic Programming, Math· 1 company
1269. Number of Ways to Stay in the Same Place After Some StepsVideo
Solution50.2%Hard
Dynamic Programming· 1 company
1278. Palindrome Partitioning IIIVideo
Solution62.2%Hard
Dynamic Programming, String
1289. Minimum Falling Path Sum IIVideo
Solution63.2%Hard
Array, Dynamic Programming +1· 3 companies
1301. Number of Paths with Max ScoreVideo
Solution63.4%Hard
Array, Dynamic Programming +1· 4 companies
1312. Minimum Insertion Steps to Make a String PalindromeVideo
Solution74.3%Hard
Dynamic Programming, String· 7 companies
1320. Minimum Distance to Type a Word Using Two FingersVideo
Solution72.2%Hard
Dynamic Programming, String· 2 companies
1326. Minimum Number of Taps to Open to Water a GardenVideo
Solution50.7%Hard
Array, Dynamic Programming +1· 13 companies
1335. Minimum Difficulty of a Job ScheduleVideo
Solution59.6%Hard
Array, Dynamic Programming· 7 companies
1340. Jump Game VVideo
Solution75.7%Hard
Array, Dynamic Programming +1· 2 companies
1349. Maximum Students Taking ExamVideo
Solution54.8%Hard
Array, Bit Manipulation +3· 3 companies
1359. Count All Valid Pickup and Delivery OptionsVideo
Solution64.9%Hard
Combinatorics, Dynamic Programming +1· 3 companies
1363. Largest Multiple of ThreeVideo
Solution33.2%Hard
Array, Dynamic Programming +1· 1 company
1373. Maximum Sum BST in Binary TreeVideo
Solution48.9%Hard
Binary Search Tree, Binary Tree +3· 5 companies
1388. Pizza With 3n SlicesVideo
Solution54.4%Hard
Array, Dynamic Programming +2· 1 company
1397. Find All Good StringsVideo
Solution46.4%Hard
Dynamic Programming, String +1· 2 companies
1402. Reducing DishesVideo
Solution76.8%Hard
Array, Dynamic Programming +2· 3 companies
1406. Stone Game IIIVideo
Solution68.0%Hard
Array, Dynamic Programming +2· 2 companies
1411. Number of Ways to Paint N × 3 GridVideo
Solution80.6%Hard
Dynamic Programming· 8 companies
1416. Restore The ArrayVideo
Solution47.2%Hard
Dynamic Programming, String· 2 companies
1420. Build Array Where You Can Find The Maximum Exactly K ComparisonsVideo
Solution65.3%Hard
Dynamic Programming, Prefix Sum· 2 companies
1425. Constrained Subsequence SumVideo
Solution56.5%Hard
Array, Dynamic Programming +4· 2 companies
1434. Number of Ways to Wear Different Hats to Each OtherVideo
Solution47.0%Hard
Array, Bit Manipulation +2· 3 companies
1444. Number of Ways of Cutting a PizzaVideo
Solution61.8%Hard
Array, Dynamic Programming +2· 1 company
Showing 51–100 of 332