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985 problems

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

Hard · 985 results

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TitleSolutionAcceptDifficultyTopics
3149. Find the Minimum Cost Array PermutationVideo
Solution26.1%Hard
Array, Bit Manipulation +2· 1 company
3154. Find Number of Ways to Reach the K-th StairVideo
Solution38.2%Hard
Bit Manipulation, Combinatorics +3· 1 company
3156. Employee Task Duration and Concurrent TasksPremium
Solution39.9%Hard
Database
3161. Block Placement QueriesVideo
Solution41.0%Hard
Array, Binary Indexed Tree +2· 10 companies
3165. Maximum Sum of Subsequence With Non-adjacent ElementsVideo
Solution15.7%Hard
Array, Divide and Conquer +2· 2 companies
3171. Find Subarray With Bitwise OR Closest to KVideo
Solution31.5%Hard
Array, Binary Search +2· 1 company
3177. Find the Maximum Length of a Good Subsequence IIVideo
Solution25.2%Hard
Array, Dynamic Programming +1· 1 company
3181. Maximum Total Reward Using Operations IIVideo
Solution21.9%Hard
Array, Bit Manipulation +1· 1 company
3187. Peaks in ArrayVideo
Solution28.5%Hard
Array, Binary Indexed Tree +1· 1 company
3188. Find Top Scoring Students IIVideoPremium
Solution40.1%Hard
Database
3193. Count the Number of InversionsVideo
Solution31.9%Hard
Array, Dynamic Programming· 5 companies
3197. Find the Minimum Area to Cover All Ones IIVideo
Solution63.5%Hard
Array, Enumeration +1· 4 companies
3203. Find Minimum Diameter After Merging Two TreesVideo
Solution57.1%Hard
Breadth-First Search, Depth-First Search +2· 4 companies
3209. Number of Subarrays With AND Value of KVideo
Solution35.7%Hard
Array, Binary Search +2· 1 company
3213. Construct String with Minimum CostVideo
Solution19.0%Hard
Array, Dynamic Programming +2· 1 company
3214. Year on Year Growth RateVideoPremium
Solution51.7%Hard
Database· 1 company
3219. Minimum Cost for Cutting Cake IIVideo
Solution54.2%Hard
Array, Greedy +1· 1 company
3225. Maximum Score From Grid OperationsVideo
Solution63.5%Hard
Array, Dynamic Programming +2· 3 companies
3229. Minimum Operations to Make Array Equal to TargetVideo
Solution42.0%Hard
Array, Dynamic Programming +3· 3 companies
3231. Minimum Number of Increasing Subsequence to Be RemovedVideoPremium
Solution47.9%Hard
Array, Binary Search
3235. Check if the Rectangle Corner Is ReachableVideo
Solution24.4%Hard
Array, Breadth-First Search +4· 2 companies
3236. CEO Subordinate HierarchyVideoPremium
Solution70.5%Hard
Database
3241. Time Taken to Mark All NodesVideo
Solution29.5%Hard
Depth-First Search, Dynamic Programming +2
3244. Shortest Distance After Road Addition Queries IIVideo
Solution26.5%Hard
Array, Graph +2
3245. Alternating Groups IIIVideo
Solution18.9%Hard
Array, Binary Indexed Tree
3250. Find the Count of Monotonic Pairs IVideo
Solution47.6%Hard
Array, Combinatorics +3· 2 companies
3251. Find the Count of Monotonic Pairs IIVideo
Solution24.7%Hard
Array, Combinatorics +3· 1 company
3256. Maximum Value Sum by Placing Three Rooks IVideo
Solution17.0%Hard
Array, Dynamic Programming +2
3257. Maximum Value Sum by Placing Three Rooks IIVideo
Solution26.1%Hard
Array, Dynamic Programming +2
3260. Find the Largest Palindrome Divisible by KVideo
Solution17.0%Hard
Dynamic Programming, Greedy +3· 2 companies
3261. Count Substrings That Satisfy K-Constraint IIVideo
Solution24.1%Hard
Array, Binary Search +3
3266. Final Array State After K Multiplication Operations IIVideo
Solution13.7%Hard
Array, Heap (Priority Queue) +1· 3 companies
3267. Count Almost Equal Pairs IIVideo
Solution27.7%Hard
Array, Counting +3
3268. Find Overlapping Shifts IIVideoPremium
Solution56.5%Hard
Database
3269. Constructing Two Increasing ArraysPremium
Solution61.8%Hard
Array, Dynamic Programming
3272. Find the Count of Good IntegersVideo
Solution69.5%Hard
Combinatorics, Enumeration +2· 2 companies
3273. Minimum Amount of Damage Dealt to BobVideo
Solution39.6%Hard
Array, Greedy +1· 1 company
3276. Select Cells in Grid With Maximum ScoreVideo
Solution15.7%Hard
Array, Bit Manipulation +3
3277. Maximum XOR Score Subarray QueriesVideo
Solution43.4%Hard
Array, Dynamic Programming· 1 company
3279. Maximum Total Area Occupied by PistonsVideoPremium
Solution41.3%Hard
Array, Counting +4
3283. Maximum Number of Moves to Kill All PawnsVideo
Solution33.7%Hard
Array, Bit Manipulation +4· 1 company
3287. Find the Maximum Sequence Value of ArrayVideo
Solution21.9%Hard
Array, Bit Manipulation +1· 1 company
3288. Length of the Longest Increasing PathVideo
Solution19.9%Hard
Array, Binary Search +1
3292. Minimum Number of Valid Strings to Form Target IIVideo
Solution21.1%Hard
Array, Binary Search +6
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
3303. Find the Occurrence of First Almost Equal SubstringVideo
Solution16.0%Hard
String, String Matching· 1 company
3307. Find the K-th Character in String Game IIVideo
Solution48.5%Hard
Bit Manipulation, Math +1· 3 companies
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
Showing 701–750 of 985