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Problems

286 problems

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

286 results

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TitleSolutionAcceptDifficultyTopics
805. Split Array With Same AverageVideo
Solution27.5%Hard
Array, Bit Manipulation +3· 6 companies
810. Chalkboard XOR GameVideo
Solution67.3%Hard
Array, Bit Manipulation +3· 3 companies
832. Flipping an ImageVideo
Solution83.6%Easy
Array, Bit Manipulation +3· 6 companies
847. Shortest Path Visiting All NodesVideo
Solution66.5%Hard
Bit Manipulation, Bitmask +3· 4 companies
861. Score After Flipping MatrixVideo
Solution80.3%Medium
Array, Bit Manipulation +2· 3 companies
864. Shortest Path to Get All KeysVideo
Solution55.0%Hard
Array, Bit Manipulation +2· 7 companies
868. Binary GapVideo
Solution74.2%Easy
Bit Manipulation· 6 companies
898. Bitwise ORs of SubarraysVideo
Solution56.8%Medium
Array, Bit Manipulation +1· 7 companies
943. Find the Shortest SuperstringVideo
Solution45.8%Hard
Array, Bit Manipulation +3· 2 companies
957. Prison Cells After N DaysVideo
Solution39.0%Medium
Array, Bit Manipulation +2· 1 company
980. Unique Paths IIIVideo
Solution82.8%Hard
Array, Backtracking +2· 7 companies
982. Triples with Bitwise AND Equal To ZeroVideo
Solution60.7%Hard
Array, Bit Manipulation +1· 2 companies
995. Minimum Number of K Consecutive Bit FlipsVideo
Solution62.7%Hard
Array, Bit Manipulation +3· 2 companies
996. Number of Squareful ArraysVideo
Solution51.9%Hard
Array, Backtracking +5· 2 companies
1009. Complement of Base 10 IntegerVideo
Solution63.3%Easy
Bit Manipulation· 5 companies
1018. Binary Prefix Divisible By 5Video
Solution53.5%Easy
Array, Bit Manipulation· 3 companies
1066. Campus Bikes IIVideoPremium
Solution55.9%Medium
Array, Backtracking +3· 1 company
1125. Smallest Sufficient TeamVideo
Solution55.5%Hard
Array, Bit Manipulation +2· 1 company
1177. Can Make Palindrome from SubstringVideo
Solution42.0%Medium
Array, Bit Manipulation +3· 1 company
1178. Number of Valid Words for Each PuzzleVideo
Solution47.8%Hard
Array, Bit Manipulation +3· 1 company
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
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
1284. Minimum Number of Flips to Convert Binary Matrix to Zero MatrixVideo
Solution72.9%Hard
Array, Bit Manipulation +3· 1 company
1310. XOR Queries of a SubarrayVideo
Solution78.1%Medium
Array, Bit Manipulation +1· 3 companies
1318. Minimum Flips to Make a OR b Equal to cVideo
Solution71.9%Medium
Bit Manipulation· 2 companies
1342. Number of Steps to Reduce a Number to ZeroVideo
Solution86.0%Easy
Bit Manipulation, Math· 6 companies
1349. Maximum Students Taking ExamVideo
Solution54.8%Hard
Array, Bit Manipulation +3· 3 companies
1356. Sort Integers by The Number of 1 BitsVideo
Solution82.3%Easy
Array, Bit Manipulation +2· 4 companies
1371. Find the Longest Substring Containing Vowels in Even CountsVideo
Solution75.7%Medium
Bit Manipulation, Hash Table +2· 6 companies
1386. Cinema Seat AllocationVideo
Solution56.8%Medium
Array, Bit Manipulation +2· 5 companies
1404. Number of Steps to Reduce a Number in Binary Representation to OneVideo
Solution63.8%Medium
Bit Manipulation, String· 7 companies
1434. Number of Ways to Wear Different Hats to Each OtherVideo
Solution47.0%Hard
Array, Bit Manipulation +2· 3 companies
1442. Count Triplets That Can Form Two Arrays of Equal XORVideo
Solution84.9%Medium
Array, Bit Manipulation +3· 2 companies
1457. Pseudo-Palindromic Paths in a Binary TreeVideo
Solution68.3%Medium
Binary Tree, Bit Manipulation +3· 2 companies
1461. Check If a String Contains All Binary Codes of Size KVideo
Solution61.5%Medium
Bit Manipulation, Hash Function +3· 5 companies
1486. XOR Operation in an ArrayVideo
Solution87.5%Easy
Bit Manipulation, Math· 2 companies
1494. Parallel Courses IIVideo
Solution31.3%Hard
Bit Manipulation, Bitmask +2· 3 companies
1506. Find Root of N-Ary TreeVideoPremium
Solution78.4%Medium
Bit Manipulation, Depth-First Search +2· 3 companies
1521. Find a Value of a Mysterious Function Closest to TargetVideo
Solution48.3%Hard
Array, Binary Search +2· 1 company
1525. Number of Good Ways to Split a StringVideo
Solution68.2%Medium
Bit Manipulation, Dynamic Programming +2· 2 companies
1542. Find Longest Awesome SubstringVideo
Solution47.4%Hard
Bit Manipulation, Hash Table +1· 1 company
1558. Minimum Numbers of Function Calls to Make Target ArrayVideo
Solution62.9%Medium
Array, Bit Manipulation +1· 1 company
1595. Minimum Cost to Connect Two Groups of PointsVideo
Solution50.9%Hard
Array, Bit Manipulation +3· 1 company
1601. Maximum Number of Achievable Transfer RequestsVideo
Solution64.5%Hard
Array, Backtracking +2· 1 company
1611. Minimum One Bit Operations to Make Integers ZeroVideo
Solution78.5%Hard
Bit Manipulation, Dynamic Programming +1· 5 companies
1617. Count Subtrees With Max Distance Between CitiesVideo
Solution67.4%Hard
Bit Manipulation, Bitmask +3
1655. Distribute Repeating IntegersVideo
Solution41.1%Hard
Array, Backtracking +3· 1 company
1659. Maximize Grid HappinessVideo
Solution41.6%Hard
Bit Manipulation, Bitmask +2· 1 company
Showing 51–100 of 286