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Problems

203 problems

Has videoPremium onlyReset
CountingArray2,237String877Hash Table797Math691Dynamic Programming673Sorting508Greedy485Binary Search357Depth-First Search338Database308Bit Manipulation286Matrix279Tree264Breadth-First Search257Prefix Sum252All topics

203 results

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TitleSolutionAcceptDifficultyTopics
169. Majority ElementVideo
Solution66.2%Easy
Array, Counting +3· 22 companies
229. Majority Element IIVideo
Solution56.5%Medium
Array, Counting +2· 9 companies
299. Bulls and CowsVideo
Solution52.9%Medium
Counting, Hash Table +1· 7 companies
347. Top K Frequent ElementsVideo
Solution67.3%Medium
Array, Bucket Sort +6· 53 companies
358. Rearrange String k Distance ApartVideoPremium
Solution39.9%Hard
Counting, Greedy +4· 4 companies
383. Ransom NoteVideo
Solution66.3%Easy
Counting, Hash Table +1· 14 companies
387. First Unique Character in a StringVideo
Solution66.4%Easy
Counting, Hash Table +2· 25 companies
451. Sort Characters By FrequencyVideo
Solution75.8%Medium
Bucket Sort, Counting +4· 16 companies
594. Longest Harmonious SubsequenceVideo
Solution65.1%Easy
Array, Counting +3· 7 companies
621. Task SchedulerVideo
Solution64.0%Medium
Array, Counting +4· 24 companies
692. Top K Frequent WordsVideo
Solution60.6%Medium
Bucket Sort, Counting +5· 23 companies
767. Reorganize StringVideo
Solution57.5%Medium
Counting, Greedy +4· 20 companies
811. Subdomain Visit CountVideo
Solution77.2%Medium
Array, Counting +2· 4 companies
819. Most Common WordVideo
Solution45.0%Easy
Array, Counting +2· 5 companies
869. Reordered Power of 2Video
Solution66.0%Medium
Counting, Enumeration +3· 5 companies
884. Uncommon Words from Two SentencesVideo
Solution75.8%Easy
Counting, Hash Table +1· 2 companies
900. RLE IteratorVideo
Solution59.6%Medium
Array, Counting +2· 2 companies
914. X of a Kind in a Deck of CardsVideo
Solution30.4%Easy
Array, Counting +3· 2 companies
923. 3Sum With MultiplicityVideo
Solution46.2%Medium
Array, Counting +3· 4 companies
945. Minimum Increment to Make Array UniqueVideo
Solution60.7%Medium
Array, Counting +2· 7 companies
992. Subarrays with K Different IntegersVideo
Solution69.0%Hard
Array, Counting +2· 18 companies
1010. Pairs of Songs With Total Durations Divisible by 60Video
Solution53.6%Medium
Array, Counting +1· 7 companies
1054. Distant BarcodesVideo
Solution49.3%Medium
Array, Counting +4· 2 companies
1079. Letter Tile PossibilitiesVideo
Solution83.5%Medium
Backtracking, Counting +2· 5 companies
1090. Largest Values From LabelsVideo
Solution64.7%Medium
Array, Counting +3· 1 company
1121. Divide Array Into Increasing SequencesVideoPremium
Solution65.4%Hard
Array, Counting· 1 company
1128. Number of Equivalent Domino PairsVideo
Solution60.7%Easy
Array, Counting +1· 3 companies
1160. Find Words That Can Be Formed by CharactersVideo
Solution71.5%Easy
Array, Counting +2· 7 companies
1189. Maximum Number of BalloonsVideo
Solution64.1%Easy
Counting, Hash Table +1· 6 companies
1198. Find Smallest Common Element in All RowsVideoPremium
Solution76.5%Medium
Array, Binary Search +3· 2 companies
1213. Intersection of Three Sorted ArraysVideoPremium
Solution80.2%Easy
Array, Binary Search +2· 2 companies
1221. Split a String in Balanced StringsVideo
Solution87.3%Easy
Counting, Greedy +1· 4 companies
1267. Count Servers that CommunicateVideo
Solution73.5%Medium
Array, Breadth-First Search +4· 6 companies
1347. Minimum Number of Steps to Make Two Strings AnagramVideo
Solution82.6%Medium
Counting, Hash Table +1· 10 companies
1356. Sort Integers by The Number of 1 BitsVideo
Solution82.3%Easy
Array, Bit Manipulation +2· 4 companies
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
1370. Increasing Decreasing StringVideo
Solution77.3%Easy
Counting, Hash Table +1· 3 companies
1394. Find Lucky Integer in an ArrayVideo
Solution75.5%Easy
Array, Counting +1· 6 companies
1400. Construct K Palindrome StringsVideo
Solution68.6%Medium
Counting, Greedy +2· 6 companies
1419. Minimum Number of Frogs CroakingVideo
Solution51.2%Medium
Counting, String· 2 companies
1481. Least Number of Unique Integers after K RemovalsVideo
Solution63.8%Medium
Array, Counting +3· 7 companies
1497. Check If Array Pairs Are Divisible by kVideo
Solution46.2%Medium
Array, Counting +1· 8 companies
1512. Number of Good PairsVideo
Solution89.9%Easy
Array, Counting +2· 10 companies
1519. Number of Nodes in the Sub-Tree With the Same LabelVideo
Solution55.5%Medium
Breadth-First Search, Counting +3· 2 companies
1603. Design Parking SystemVideo
Solution87.2%Easy
Counting, Design +1· 6 companies
1612. Check If Two Expression Trees are EquivalentVideoPremium
Solution71.8%Medium
Binary Tree, Counting +3· 1 company
1657. Determine if Two Strings Are CloseVideo
Solution54.2%Medium
Counting, Hash Table +2· 7 companies
1684. Count the Number of Consistent StringsVideo
Solution88.1%Easy
Array, Bit Manipulation +3· 3 companies
1704. Determine if String Halves Are AlikeVideo
Solution78.6%Easy
Counting, String· 1 company
Showing 1–50 of 203