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Array194 Database104 Hash Table83 String71 Depth-First Search57 Dynamic Programming49 Tree48 Math45 Sorting43 Breadth-First Search40 Greedy40 Binary Tree38 Binary Search31 Two Pointers29 Matrix28 All topics

Medium · Premium · 29 results

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TitleSolutionAcceptDifficultyTopics

161. One Edit DistanceVideoPremium

Solution34.4%Medium

String, Two Pointers· 8 companies

186. Reverse Words in a String IIVideoPremium

Solution56.6%Medium

String, Two Pointers· 4 companies

244. Shortest Word Distance IIVideoPremium

Solution62.8%Medium

Array, Design +3· 4 companies

251. Flatten 2D VectorVideoPremium

Solution50.5%Medium

Array, Design +2· 4 companies

253. Meeting Rooms IIVideoPremium

Solution52.6%Medium

Array, Greedy +4· 42 companies

259. 3Sum SmallerVideoPremium

Solution51.4%Medium

Array, Binary Search +2· 7 companies

277. Find the CelebrityVideoPremium

Solution48.9%Medium

Graph, Interactive +1· 12 companies

360. Sort Transformed ArrayVideoPremium

Solution58.0%Medium

Array, Math +2· 3 companies

723. Candy CrushVideoPremium

Solution77.6%Medium

Array, Matrix +2· 11 companies

1055. Shortest Way to Form StringVideoPremium

Solution61.6%Medium

Binary Search, Greedy +2· 3 companies

1214. Two Sum BSTsVideoPremium

Solution68.2%Medium

Binary Search, Binary Search Tree +5· 1 company

1229. Meeting SchedulerVideoPremium

Solution55.3%Medium

Array, Sorting +1· 11 companies

1265. Print Immutable Linked List in ReverseVideoPremium

Solution94.0%Medium

Linked List, Recursion +2

1570. Dot Product of Two Sparse VectorsVideoPremium

Solution89.9%Medium

Array, Design +2· 12 companies

1634. Add Two Polynomials Represented as Linked ListsVideoPremium

Solution61.1%Medium

Linked List, Math +1· 1 company

1650. Lowest Common Ancestor of a Binary Tree IIIVideoPremium

Solution83.0%Medium

Binary Tree, Hash Table +2· 10 companies

1868. Product of Two Run-Length Encoded ArraysVideoPremium

Solution59.6%Medium

Array, Two Pointers· 2 companies

1885. Count Pairs in Two ArraysVideoPremium

Solution60.5%Medium

Array, Binary Search +2· 2 companies

2046. Sort Linked List Already Sorted Using Absolute ValuesVideoPremium

Solution67.1%Medium

Linked List, Sorting +1

2330. Valid Palindrome IVVideoPremium

Solution75.8%Medium

String, Two Pointers· 2 companies

2422. Merge Operations to Turn Array Into a PalindromeVideoPremium

Solution69.0%Medium

Array, Greedy +1· 5 companies

2674. Split a Circular Linked ListVideoPremium

Solution78.1%Medium

Linked List, Two Pointers

2838. Maximum Coins Heroes Can CollectVideoPremium

Solution68.7%Medium

Array, Binary Search +3· 1 company

3284. Sum of Consecutive SubarraysVideoPremium

Solution43.4%Medium

Array, Dynamic Programming +1

3400. Maximum Number of Matching Indices After Right ShiftsVideoPremium

Solution85.3%Medium

Array, Simulation +1

3460. Longest Common Prefix After at Most One RemovalPremium

Solution68.3%Medium

String, Two Pointers

3555. Smallest Subarray to Sort in Every Sliding WindowVideoPremium

Solution58.8%Medium

Array, Greedy +4

3730. Maximum Calories Burnt from JumpsVideoPremium

Solution72.8%Medium

Array, Greedy +2· 1 company

3865. Reverse K SubarraysPremium

Solution88.6%Medium

Array, Two Pointers

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