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Problems

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
3455. Shortest Matching SubstringVideo
Solution24.5%Hard
Binary Search, String +2· 1 company
3459. Length of Longest V-Shaped Diagonal SegmentVideo
Solution56.3%Hard
Array, Dynamic Programming +2· 5 companies
3463. Check If Digits Are Equal in String After Operations IIVideo
–14.3%Hard
Combinatorics, Math +2· 2 companies
3464. Maximize the Distance Between Points on a SquareVideo
Solution51.3%Hard
Array, Binary Search +3· 2 companies
3470. Permutations IVVideo
–32.8%Hard
Array, Combinatorics +2
3474. Lexicographically Smallest Generated StringVideo
Solution53.3%Hard
Greedy, String +1· 5 companies
3480. Maximize Subarrays After Removing One Conflicting PairVideo
Solution64.6%Hard
Array, Enumeration +2· 5 companies
3482. Analyze Organization HierarchyVideo
Solution62.9%Hard
Database· 1 company
3485. Longest Common Prefix of K Strings After RemovalVideo
Solution24.3%Hard
Array, String +1
3486. Longest Special Path IIVideo
–19.8%Hard
Array, Depth-First Search +3· 1 company
3490. Count Beautiful NumbersVideo
–24.5%Hard
Dynamic Programming· 1 company
3495. Minimum Operations to Make Array Elements ZeroVideo
Solution60.4%Hard
Array, Bit Manipulation +1· 4 companies
3500. Minimum Cost to Divide Array Into SubarraysVideo
–28.2%Hard
Array, Dynamic Programming +1
3501. Maximize Active Section with Trade IIVideo
Solution64.7%Hard
Array, Binary Search +2
3504. Longest Palindrome After Substring Concatenation IIVideo
Solution18.4%Hard
Dynamic Programming, String +1· 1 company
3505. Minimum Operations to Make Elements Within K Subarrays EqualVideo
–27.8%Hard
Array, Dynamic Programming +4
3506. Find Time Required to Eliminate Bacterial StrainsPremium
Solution63.2%Hard
Array, Greedy +2
3509. Maximum Product of Subsequences With an Alternating Sum Equal to KVideo
–13.7%Hard
Array, Dynamic Programming +1· 1 company
3510. Minimum Pair Removal to Sort Array IIVideo
Solution39.1%Hard
Array, Doubly-Linked List +5· 3 companies
3515. Shortest Path in a Weighted TreeVideo
–41.5%Hard
Array, Binary Indexed Tree +3· 1 company
3518. Smallest Palindromic Rearrangement IIVideo
Solution44.3%Hard
Combinatorics, Counting +3
3519. Count Numbers with Non-Decreasing Digits Video
–37.3%Hard
Dynamic Programming, Math +1
3525. Find X Value of Array IIVideo
Solution70.4%Hard
Array, Math +1· 1 company
3526. Range XOR Queries with Subarray ReversalsPremium
–62.4%Hard
Array, Binary Tree +1
3530. Maximum Profit from Valid Topological Order in DAGVideo
–29.7%Hard
Array, Bit Manipulation +4
3533. Concatenated DivisibilityVideo
–30.6%Hard
Array, Bit Manipulation +2· 1 company
3534. Path Existence Queries in a Graph IIVideo
Solution64.2%Hard
Array, Binary Search +6· 4 companies
3538. Merge Operations for Minimum Travel TimeVideo
–30.5%Hard
Array, Dynamic Programming +1· 1 company
3539. Find Sum of Array Product of Magical SequencesVideo
Solution61.9%Hard
Array, Bit Manipulation +4· 2 companies
3544. Subtree Inversion SumVideo
–41.6%Hard
Array, Depth-First Search +2
3547. Maximum Sum of Edge Values in a GraphVideo
–35.4%Hard
Graph, Greedy +1· 1 company
3548. Equal Sum Grid Partition IIVideo
Solution39.5%Hard
Array, Enumeration +3· 2 companies
3549. Multiply Two PolynomialsVideoPremium
Solution59.2%Hard
Array, Math
3553. Minimum Weighted Subgraph With the Required Paths IIVideo
–48.2%Hard
Array, Bit Manipulation +3
3554. Find Category Recommendation PairsVideo
Solution66.5%Hard
Database
3559. Number of Ways to Assign Edge Weights IIVideo
Solution71.8%Hard
Array, Bit Manipulation +4· 3 companies
3562. Maximum Profit from Trading Stocks with DiscountsVideo
Solution56.1%Hard
Array, Depth-First Search +2· 2 companies
3563. Lexicographically Smallest String After Adjacent RemovalsVideo
–17.9%Hard
Dynamic Programming, String
3569. Maximize Count of Distinct Primes After SplitVideo
–19.0%Hard
Array, Math +2· 1 company
3574. Maximize Subarray GCD ScoreVideo
Solution25.5%Hard
Array, Enumeration +2· 1 company
3575. Maximum Good Subtree ScoreVideo
–44.0%Hard
Array, Bit Manipulation +4· 1 company
3579. Minimum Steps to Convert String with OperationsVideo
Solution42.5%Hard
Dynamic Programming, String
3585. Find Weighted Median Node in TreeVideo
Solution26.7%Hard
Array, Binary Search +4· 1 company
3590. Kth Smallest Path XOR SumVideo
Solution30.1%Hard
Array, Depth-First Search +2
3594. Minimum Time to Transport All IndividualsVideo
–28.3%Hard
Array, Bit Manipulation +4
3600. Maximize Spanning Tree Stability with UpgradesVideo
Solution65.9%Hard
Binary Search, Graph +3· 3 companies
3605. Minimum Stability Factor of ArrayVideo
–20.4%Hard
Array, Binary Search +4· 1 company
3609. Minimum Moves to Reach Target in GridVideo
–15.5%Hard
Math· 1 company
3614. Process String with Special Operations IIVideo
Solution39.9%Hard
Simulation, String· 3 companies
3615. Longest Palindromic Path in GraphVideo
–22.6%Hard
Bit Manipulation, Bitmask +3· 1 company
Showing 801–850 of 985