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Problems

134 problems

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

Hard · 134 results

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TitleSolutionAcceptDifficultyTopics
1938. Maximum Genetic Difference QueryVideo
Solution48.6%Hard
Array, Bit Manipulation +3· 1 company
1948. Delete Duplicate Folders in SystemVideo
Solution77.7%Hard
Array, Hash Function +3· 6 companies
2009. Minimum Number of Operations to Make Array ContinuousVideo
Solution52.0%Hard
Array, Binary Search +2· 5 companies
2025. Maximum Number of Ways to Partition an ArrayVideo
Solution36.2%Hard
Array, Counting +3· 2 companies
2122. Recover the Original ArrayVideo
Solution42.0%Hard
Array, Enumeration +3· 1 company
2227. Encrypt and Decrypt StringsVideo
Solution38.8%Hard
Array, Design +3· 3 companies
2251. Number of Flowers in Full BloomVideo
Solution57.8%Hard
Array, Binary Search +4· 7 companies
2254. Design Video Sharing PlatformVideoPremium
–64.1%Hard
Design, Hash Table +2· 1 company
2262. Total Appeal of A StringVideo
Solution56.4%Hard
Dynamic Programming, Hash Table +1· 2 companies
2301. Match Substring After ReplacementVideo
Solution43.3%Hard
Array, Hash Table +2· 1 company
2306. Naming a CompanyVideo
Solution46.4%Hard
Array, Bit Manipulation +3· 1 company
2350. Shortest Impossible Sequence of RollsVideo
Solution69.3%Hard
Array, Greedy +1· 2 companies
2354. Number of Excellent PairsVideo
Solution49.7%Hard
Array, Binary Search +2· 1 company
2402. Meeting Rooms IIIVideo
Solution51.6%Hard
Array, Hash Table +3· 12 companies
2421. Number of Good PathsVideo
Solution56.7%Hard
Array, Graph +4· 3 companies
2488. Count Subarrays With Median KVideo
Solution49.1%Hard
Array, Hash Table +1· 3 companies
2499. Minimum Total Cost to Make Arrays UnequalVideo
Solution41.3%Hard
Array, Counting +2· 1 company
2508. Add Edges to Make Degrees of All Nodes EvenVideo
Solution37.3%Hard
Graph, Hash Table· 1 company
2514. Count AnagramsVideo
Solution38.4%Hard
Combinatorics, Counting +3· 1 company
2524. Maximum Frequency Score of a SubarrayVideoPremium
Solution35.7%Hard
Array, Hash Table +3· 1 company
2547. Minimum Cost to Split an ArrayVideo
Solution45.4%Hard
Array, Counting +2· 1 company
2561. Rearranging FruitsVideo
Solution57.4%Hard
Array, Greedy +1· 9 companies
2581. Count Number of Possible Root NodesVideo
Solution49.3%Hard
Array, Depth-First Search +3
2584. Split the Array to Make Coprime ProductsVideo
Solution29.3%Hard
Array, Hash Table +2· 1 company
2713. Maximum Strictly Increasing Cells in a MatrixVideo
Solution31.3%Hard
Array, Binary Search +6
2732. Find a Good Subset of the MatrixVideo
Solution45.4%Hard
Array, Bit Manipulation +2
2763. Sum of Imbalance Numbers of All SubarraysVideo
Solution41.9%Hard
Array, Hash Table +1· 1 company
2781. Length of the Longest Valid SubstringVideo
Solution38.3%Hard
Array, Hash Table +2· 3 companies
2813. Maximum Elegance of a K-Length SubsequenceVideo
Solution29.1%Hard
Array, Greedy +4
2842. Count K-Subsequences of a String With Maximum BeautyVideo
Solution30.2%Hard
Combinatorics, Greedy +3· 1 company
2897. Apply Operations on Array to Maximize Sum of SquaresVideo
Solution73.9%Hard
Array, Bit Manipulation +2· 1 company
2902. Count of Sub-Multisets With Bounded SumVideo
Solution22.3%Hard
Array, Dynamic Programming +2
2935. Maximum Strong Pair XOR IIVideo
Solution32.9%Hard
Array, Bit Manipulation +3· 1 company
2949. Count Beautiful Substrings IIVideo
Solution27.5%Hard
Hash Table, Math +3· 1 company
2953. Count Complete SubstringsVideo
Solution31.3%Hard
Hash Table, Sliding Window +1· 1 company
2963. Count the Number of Good PartitionsVideo
Solution49.3%Hard
Array, Combinatorics +2· 1 company
2983. Palindrome Rearrangement QueriesVideo
Solution24.4%Hard
Hash Table, Prefix Sum +1
3013. Divide an Array Into Subarrays With Minimum Cost IIVideo
Solution54.7%Hard
Array, Hash Table +2· 4 companies
3104. Find Longest Self-Contained SubstringVideoPremium
Solution58.6%Hard
Binary Search, Hash Table +2· 1 company
3134. Find the Median of the Uniqueness ArrayVideo
Solution30.0%Hard
Array, Binary Search +2· 2 companies
3177. Find the Maximum Length of a Good Subsequence IIVideo
Solution25.2%Hard
Array, Dynamic Programming +1· 1 company
3267. Count Almost Equal Pairs IIVideo
Solution27.7%Hard
Array, Counting +3
3272. Find the Count of Good IntegersVideo
Solution69.5%Hard
Combinatorics, Enumeration +2· 2 companies
3279. Maximum Total Area Occupied by PistonsVideoPremium
Solution41.3%Hard
Array, Counting +4
3298. Count Substrings That Can Be Rearranged to Contain a String IIVideo
Solution55.2%Hard
Hash Table, Sliding Window +1
3299. Sum of Consecutive SubsequencesVideoPremium
Solution44.1%Hard
Array, Dynamic Programming +1
3311. Construct 2D Grid Matching Graph LayoutVideo
Solution29.3%Hard
Array, Graph +2
3312. Sorted GCD Pair QueriesVideo
Solution58.4%Hard
Array, Binary Search +6· 1 company
3321. Find X-Sum of All K-Long Subarrays IIVideo
Solution41.1%Hard
Array, Hash Table +2· 2 companies
3327. Check if DFS Strings Are PalindromesVideo
Solution20.9%Hard
Array, Depth-First Search +4· 1 company
Showing 51–100 of 134