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Array274 Database207 String109 Hash Table105 Depth-First Search75 Math70 Dynamic Programming69 Sorting61 Tree60 Breadth-First Search51 Binary Tree47 Greedy47 Binary Search46 Matrix38 Two Pointers37 All topics

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TitleSolutionAcceptDifficultyTopics

3294. Convert Doubly Linked List to Array IIVideoPremium

Solution83.3%Medium

Array, Doubly-Linked List +1

3299. Sum of Consecutive SubsequencesVideoPremium

Solution44.1%Hard

Array, Dynamic Programming +1

3308. Find Top Performing DriverVideoPremium

Solution49.0%Medium

3313. Find the Last Marked Nodes in TreeVideoPremium

Solution57.1%Hard

Depth-First Search, Tree· 1 company

3322. Premier League Table Ranking IIIVideoPremium

Solution70.6%Medium

3323. Minimize Connected Groups by Inserting IntervalVideoPremium

Solution50.3%Medium

Array, Binary Search +2· 1 company

3328. Find Cities in Each State IIVideoPremium

Solution66.6%Medium

3329. Count Substrings With K-Frequency Characters IIVideoPremium

Solution72.2%Hard

Hash Table, Sliding Window +1

3338. Second Highest Salary IIVideoPremium

Solution86.4%Medium

3339. Find the Number of K-Even ArraysVideoPremium

Solution61.3%Medium

Dynamic Programming

3344. Maximum Sized ArrayVideoPremium

Solution51.4%Medium

Binary Search, Bit Manipulation

3353. Minimum Total OperationsVideoPremium

Solution63.8%Easy

3358. Books with NULL RatingsVideoPremium

Solution81.8%Easy

3368. First Letter CapitalizationVideoPremium

Solution86.8%Hard

3369. Design an Array Statistics Tracker VideoPremium

Solution35.7%Hard

Binary Search, Hash Table +1· 1 company

3391. Design a 3D Binary Matrix with Efficient Layer TrackingVideoPremium

Solution66.1%Medium

Array, Design +4· 1 company

3400. Maximum Number of Matching Indices After Right ShiftsVideoPremium

Solution85.3%Medium

Array, Simulation +1

3406. Find the Lexicographically Largest String From the Box IIVideoPremium

Solution48.9%Hard

String, Two Pointers

3450. Maximum Students on a Single BenchVideoPremium

Solution87.8%Easy

Array, Hash Table

3466. Maximum Coin Collection VideoPremium

Solution52.8%Medium

Array, Dynamic Programming· 1 company

3476. Maximize Profit from Task AssignmentVideoPremium

Solution65.9%Medium

Array, Greedy +2

3481. Apply SubstitutionsVideoPremium

Solution78.0%Medium

Array, Breadth-First Search +5· 1 company

3491. Phone Number PrefixVideoPremium

Solution69.9%Easy

Array, Sorting +2

3535. Unit Conversion IIVideoPremium

Solution61.5%Medium

Array, Breadth-First Search +3· 1 company

3540. Minimum Time to Visit All HousesVideoPremium

–69.9%Medium

Array, Prefix Sum· 1 company

3549. Multiply Two PolynomialsVideoPremium

Solution59.2%Hard

3555. Smallest Subarray to Sort in Every Sliding WindowVideoPremium

Solution58.8%Medium

Array, Greedy +4

3565. Sequential Grid Path CoverVideoPremium

Solution59.5%Medium

Array, Matrix +1

3571. Find the Shortest Superstring IIVideoPremium

Solution48.8%Easy

3581. Count Odd Letters from NumberVideoPremium

Solution85.1%Easy

Counting, Hash Table +2

3596. Minimum Cost Path with Alternating Directions IVideoPremium

Solution68.6%Medium

Brainteaser, Math

3610. Minimum Number of Primes to Sum to TargetVideoPremium

Solution59.8%Medium

Array, Dynamic Programming +2· 1 company

3616. Number of Student ReplacementsVideoPremium

Solution85.1%Medium

Array, Simulation

3631. Sort Threats by Severity and ExploitabilityVideoPremium

Solution63.3%Medium

3641. Longest Semi-Repeating SubarrayVideoPremium

Solution63.9%Medium

Array, Hash Table +1

3667. Sort Array By Absolute ValueVideoPremium

Solution86.7%Easy

Array, Math +2· 1 company

3687. Library Late Fee CalculatorVideoPremium

Solution94.4%Easy

Array, Simulation

3696. Maximum Distance Between Unequal Words in Array IVideoPremium

Solution81.7%Easy

Array, String· 1 company

3706. Maximum Distance Between Unequal Words in Array IIVideoPremium

Solution72.1%Medium

3711. Maximum Transactions Without Negative BalanceVideoPremium

Solution46.1%Medium

Array, Greedy +1· 1 company

3730. Maximum Calories Burnt from JumpsVideoPremium

Solution72.8%Medium

Array, Greedy +2· 1 company

3744. Find Kth Character in Expanded StringVideoPremium

Solution56.4%Medium

3758. Convert Number Words to DigitsVideoPremium

Solution67.7%Medium

3763. Maximum Total Sum with Threshold ConstraintsVideoPremium

Solution82.4%Medium

Array, Greedy +2

3807. Minimum Cost to Repair Edges to Traverse a GraphVideoPremium

Solution55.6%Medium

Binary Search, Breadth-First Search +1

3817. Good Indices in a Digit StringVideoPremium

Solution85.3%Medium

3822. Design Order Management SystemVideoPremium

Solution79.0%Medium

Design, Hash Table· 1 company

3831. Median of a Binary Search Tree LevelVideoPremium

Solution86.4%Medium

Binary Search Tree, Binary Tree +3

3846. Total Distance to Type a String Using One FingerVideoPremium

Solution89.9%Medium

Hash Table, String

3907. Count Smaller Elements With Opposite ParityVideoPremium

Solution71.5%Medium

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