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Problems

877 problems

Has videoPremium onlyReset
Array2,237String877Hash Table797Math691Dynamic Programming673Sorting508Greedy485Binary Search357Depth-First Search338Database308Bit Manipulation286Matrix279Tree264Breadth-First Search257Prefix Sum252All topics

877 results

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TitleSolutionAcceptDifficultyTopics
1202. Smallest String With SwapsVideo
Solution61.0%Medium
Array, Breadth-First Search +5· 8 companies
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
1216. Valid Palindrome IIIVideoPremium
Solution49.2%Hard
Dynamic Programming, String· 3 companies
1221. Split a String in Balanced StringsVideo
Solution87.3%Easy
Counting, Greedy +1· 4 companies
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
1239. Maximum Length of a Concatenated String with Unique CharactersVideo
Solution54.7%Medium
Array, Backtracking +2· 6 companies
1247. Minimum Swaps to Make Strings EqualVideo
Solution65.3%Medium
Greedy, Math +1· 4 companies
1249. Minimum Remove to Make Valid ParenthesesVideo
Solution71.3%Medium
Stack, String· 11 companies
1255. Maximum Score Words Formed by LettersVideo
Solution81.9%Hard
Array, Backtracking +4· 3 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
1268. Search Suggestions SystemVideo
Solution65.1%Medium
Array, Binary Search +4· 19 companies
1271. HexspeakVideoPremium
Solution57.5%Easy
Math, String· 1 company
1278. Palindrome Partitioning IIIVideo
Solution62.2%Hard
Dynamic Programming, String
1286. Iterator for CombinationVideo
Solution72.7%Medium
Backtracking, Design +2· 1 company
1297. Maximum Number of Occurrences of a SubstringVideo
Solution54.9%Medium
Hash Table, Sliding Window +1· 7 companies
1307. Verbal Arithmetic PuzzleVideo
Solution33.5%Hard
Array, Backtracking +2· 3 companies
1309. Decrypt String from Alphabet to Integer MappingVideo
Solution80.6%Easy
String· 4 companies
1312. Minimum Insertion Steps to Make a String PalindromeVideo
Solution74.3%Hard
Dynamic Programming, String· 7 companies
1316. Distinct Echo SubstringsVideo
Solution53.7%Hard
Hash Function, Rolling Hash +2· 1 company
1320. Minimum Distance to Type a Word Using Two FingersVideo
Solution72.2%Hard
Dynamic Programming, String· 2 companies
1324. Print Words VerticallyVideo
Solution68.1%Medium
Array, Simulation +1· 2 companies
1328. Break a PalindromeVideo
Solution51.6%Medium
Greedy, String· 6 companies
1332. Remove Palindromic SubsequencesVideo
Solution77.1%Easy
String, Two Pointers· 1 company
1347. Minimum Number of Steps to Make Two Strings AnagramVideo
Solution82.6%Medium
Counting, Hash Table +1· 10 companies
1358. Number of Substrings Containing All Three CharactersVideo
Solution74.4%Medium
Hash Table, Sliding Window +1· 6 companies
1360. Number of Days Between Two DatesVideo
Solution53.7%Easy
Math, String· 4 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
1371. Find the Longest Substring Containing Vowels in Even CountsVideo
Solution75.7%Medium
Bit Manipulation, Hash Table +2· 6 companies
1374. Generate a String With Characters That Have Odd CountsVideo
Solution78.7%Easy
String· 1 company
1392. Longest Happy PrefixVideo
Solution54.1%Hard
Hash Function, Rolling Hash +2· 6 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
1400. Construct K Palindrome StringsVideo
Solution68.6%Medium
Counting, Greedy +2· 6 companies
1404. Number of Steps to Reduce a Number in Binary Representation to OneVideo
Solution63.8%Medium
Bit Manipulation, String· 7 companies
1405. Longest Happy StringVideo
Solution65.5%Medium
Greedy, Heap (Priority Queue) +1· 8 companies
1408. String Matching in an ArrayVideo
Solution69.8%Easy
Array, String +1· 5 companies
1410. HTML Entity ParserVideo
Solution50.0%Medium
Hash Table, String· 3 companies
1415. The k-th Lexicographical String of All Happy Strings of Length nVideo
Solution87.1%Medium
Backtracking, String· 5 companies
1416. Restore The ArrayVideo
Solution47.2%Hard
Dynamic Programming, String· 2 companies
1417. Reformat The StringVideo
Solution52.3%Easy
String· 1 company
1418. Display Table of Food Orders in a RestaurantVideo
Solution76.5%Medium
Array, Hash Table +3· 2 companies
1419. Minimum Number of Frogs CroakingVideo
Solution51.2%Medium
Counting, String· 2 companies
1422. Maximum Score After Splitting a StringVideo
Solution65.1%Easy
Prefix Sum, String· 3 companies
1427. Perform String ShiftsVideoPremium
Solution56.0%Easy
Array, Math +1· 1 company
Showing 301–350 of 877