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Problems

2,133 problems

Has videoPremium onlyReset
Array1,212Hash Table473String437Math331Greedy330Dynamic Programming327Sorting302Depth-First Search208Binary Search189Breadth-First Search166Matrix163Tree158Prefix Sum155Two Pointers150Database137All topics

Medium · 2,133 results

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TitleSolutionAcceptDifficultyTopics
3919. Minimum Cost to Move Between IndicesVideo
Solution49.4%Medium
Array, Greedy +1
3922. Minimum Flips to Make Binary String CoherentVideo
–19.9%Medium
String· 1 company
3923. Minimum Generations to Target PointVideo
–42.9%Medium
Array, Hash Table +1
3926. Count Valid Word OccurrencesVideo
Solution48.1%Medium
Array, Counting +2
3927. Minimize Array Sum Using Divisible ReplacementsVideo
–32.2%Medium
Array, Greedy +3· 1 company
3932. Count K-th Roots in a RangeVideo
Solution24.6%Medium
Binary Search, Math· 2 companies
3933. Largest Local Values in a Matrix IIVideo
–18.5%Medium
Array, Matrix +1
3935. Power Update After K-th Largest Insertion IPremium
Solution66.3%Medium
–· 1 company
3937. Minimum Operations to Make Array Modulo Alternating IVideo
Solution46.5%Medium
Array, Enumeration
3938. Maximum Path Intersection Sum in a GridVideo
–25.6%Medium
Array, Dynamic Programming +2
3941. Password StrengthVideo
Solution74.5%Medium
Hash Table, String
3942. Minimum Operations to Sort a PermutationVideo
Solution52.7%Medium
Array· 1 company
3946. Maximum Number of Items From Sale IVideo
Solution37.3%Medium
Array, Dynamic Programming +1· 1 company
3947. Maximum Number of Items From Sale IIVideo
–30.2%Medium
Array, Greedy +2
3951. Minimum Energy to Maintain BrightnessVideo
Solution53.4%Medium
Array, Sorting
3952. Maximum Total Value of Covered IndicesVideo
–28.5%Medium
Array, Dynamic Programming +2· 1 company
3955. Valid Binary Strings With Cost LimitVideo
Solution78.5%Medium
Backtracking, Bit Manipulation +2
3958. Minimum Cost to Split into Ones IIVideoPremium
Solution68.4%Medium
–
3960. Frequency Balance SubarrayVideo
Solution29.5%Medium
Array, Counting +1· 1 company
3961. Maximize Sum of Device RatingsVideo
Solution39.4%Medium
Array, Greedy +2· 2 companies
3964. Minimum Lights to Illuminate a RoadVideo
Solution37.8%Medium
Array, Prefix Sum
3965. Finish Time of Tasks IVideo
Solution60.3%Medium
Array, Depth-First Search +2
3968. Maximum Manhattan Distance After All MovesVideo
Solution63.3%Medium
Counting, Math +1
3969. Valid Subarrays With Matching Sum Digits IVideo
Solution46.8%Medium
Array, Enumeration +3· 1 company
3970. Shortest Path With At Most K Consecutive Identical CharactersVideo
–44.7%Medium
Graph, Heap (Priority Queue) +2
3974. Maximum Total Sum of K Selected ElementsVideo
Solution49.1%Medium
Array, Greedy +1
3975. Filter Occupied IntervalsVideo
Solution44.6%Medium
Array, Sorting· 1 company
3976. Maximum Subarray Sum After MultiplierVideo
Solution25.9%Medium
Array, Dynamic Programming· 2 companies
3979. Maximum Valid Pair SumVideo
Solution49.2%Medium
Array, Enumeration
3980. Minimum Operations to Transform Binary StringVideo
–37.0%Medium
Dynamic Programming, Greedy +1
3983. Subsequence After One ReplacementVideo
Solution21.6%Medium
String, Two Pointers
3984. Divisible GameVideo
–42.3%Medium
Array, Dynamic Programming +3
3987. Minimum Total Cost to Process All ElementsVideo
Solution24.7%Medium
Array, Math +1
3988. Create Grid With Exactly K Paths IVideo
–33.1%Medium
Array, Combinatorics +2
3991. Sort Array Using Prefix ReversalsPremium
Solution73.8%Medium
–
3993. Maximum Value of an Alternating SequenceVideo
Solution31.5%Medium
Greedy, Math
3994. Minimum Adjacent Swaps to Partition ArrayVideo
–57.4%Medium
Array, Greedy
3997. Count Dominant Nodes in a Binary TreeVideo
Solution72.1%Medium
Binary Tree, Depth-First Search +1
3998. Transform Binary String Using Subsequence SortVideo
–37.9%Medium
Array, Greedy +2
4001. Aggregate Two Time SeriesVideo
Solution57.9%Medium
Array, Two Pointers
4002. Count Valid SequencesVideo
Solution42.5%Medium
Combinatorics, Math
4008. Minimum Initial Strength to Defeat All MonstersVideo
Solution50.1%Medium
Array, Binary Search +2
4011. Count Subarrays With Even Odd Ratio IVideo
Solution60.6%Medium
Array, Binary Indexed Tree +4
4012. Count of Unfinished Tasks After Each ShiftVideo
Solution41.9%Medium
Array, Binary Search +1
4014. Minimum Total Price After Applying DiscountsVideo
Solution71.8%Medium
Array, Greedy +2
4015. Weighted Sum of a TreeVideo
Solution41.7%Medium
Array, Depth-First Search +1
4016. Maximum Area of Two Non-Overlapping Square SubmatricesVideo
Solution40.9%Medium
Array, Binary Search +2
4019. Merge Close Characters IIVideoPremium
Solution78.7%Medium
–
4021. Minimum Operations to Make a Rotated Palindrome IVideo
Solution63.9%Medium
Enumeration, Math +1
4022. K-th Digit in Infinite StringVideo
Solution35.1%Medium
Binary Search, Math
Showing 2,051–2,100 of 2,133