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Problems

797 problems

Has videoPremium onlyReset
Array2,237String877Hash Table797Math691Dynamic Programming673Sorting508Greedy485Binary Search357Depth-First Search338Database308Bit Manipulation286Matrix279Tree264Breadth-First Search257Prefix Sum252All topics

797 results

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TitleSolutionAcceptDifficultyTopics
3805. Count Caesar Cipher PairsVideo
Solution50.7%Medium
Array, Counting +3· 1 company
3810. Minimum Operations to Reach Target ArrayVideo
Solution62.7%Medium
Array, Greedy +1
3811. Number of Alternating XOR PartitionsVideo
Solution27.3%Medium
Array, Bit Manipulation +2
3815. Design Auction SystemVideo
Solution41.9%Medium
Design, Hash Table +2· 1 company
3816. Lexicographically Smallest String After Deleting Duplicate CharactersVideo
Solution20.9%Hard
Greedy, Hash Table +3· 2 companies
3822. Design Order Management SystemVideoPremium
Solution79.0%Medium
Design, Hash Table· 1 company
3829. Design Ride Sharing SystemVideo
Solution62.6%Medium
Data Stream, Design +2· 1 company
3837. Delayed Count of Equal ElementsPremium
Solution77.7%Medium
Array, Counting +1· 1 company
3839. Number of Prefix Connected GroupsVideo
Solution59.9%Medium
Array, Counting +2
3842. Toggle Light BulbsVideo
Solution71.2%Easy
Array, Hash Table +2· 1 company
3843. First Element with Unique FrequencyVideo
Solution69.9%Medium
Array, Counting +1
3846. Total Distance to Type a String Using One FingerVideoPremium
Solution89.9%Medium
Hash Table, String
3851. Maximum Requests Without Violating the LimitPremium
Solution64.1%Medium
Array, Greedy +3
3852. Smallest Pair With Different FrequenciesVideo
Solution68.5%Easy
Array, Counting +1· 1 company
3853. Merge Close CharactersVideo
Solution53.9%Medium
Hash Table, String· 1 company
3859. Count Subarrays With K Distinct IntegersVideo
Solution21.0%Hard
Array, Counting +2
3860. Unique Email GroupsPremium
Solution84.8%Medium
Array, Hash Table +1
3866. First Unique Even ElementVideo
Solution65.6%Easy
Array, Counting +1
3868. Minimum Cost to Equalize Arrays Using SwapsVideo
Solution48.7%Medium
Array, Counting +2· 2 companies
3873. Maximum Points Activated with One AdditionVideo
Solution42.8%Hard
Array, Hash Table +1
3885. Design Event ManagerVideo
Solution50.3%Medium
Array, Design +3· 1 company
3889. Mirror Frequency DistanceVideo
Solution60.7%Medium
Counting, Hash Table +1
3890. Integers With Multiple Sum of Two CubesVideo
Solution54.9%Medium
Counting, Enumeration +2
3900. Longest Balanced Substring After One SwapVideo
Solution14.2%Medium
Hash Table, Prefix Sum +1· 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
3934. Smallest Unique SubarrayVideo
Solution39.7%Hard
Array, Binary Search +4
3941. Password StrengthVideo
Solution74.5%Medium
Hash Table, String
3943. Number of Pairs After IncrementVideo
–20.9%Hard
Array, Counting +2
3945. Digit Frequency ScoreVideo
Solution90.7%Easy
Hash Table, Math
3948. Lexicographically Maximum MEX ArrayVideo
–53.6%Hard
Array, Greedy +2· 2 companies
3953. Maximum Score with Co-Prime ElementVideo
–27.5%Hard
Array, Combinatorics +4· 2 companies
3960. Frequency Balance SubarrayVideo
Solution29.5%Medium
Array, Counting +1· 1 company
3962. Maximum Subarray Sum After at Most K SwapsVideo
Solution14.2%Hard
Array, Binary Indexed Tree +5· 1 company
3969. Valid Subarrays With Matching Sum Digits IVideo
Solution46.8%Medium
Array, Enumeration +3· 1 company
3999. Minimum Number of String Groups Through TransformationsVideo
–47.9%Hard
Hash Table, String +1
4007. Widest Possible FenceVideo
Solution16.9%Hard
Array, Counting +2
4032. Longest Subarray With at Most K Distinct Prime FactorsVideo
Solution56.5%Medium
Array, Hash Table +3
4038. Count Integers Appearing in a Single BlockVideo
Solution44.4%Easy
Array, Counting +1
4048. Count Values With Equally Spaced Occurrences IVideo
Solution75.3%Easy
Array, Hash Table
4049. Count Values With Equally Spaced Occurrences IIVideo
Solution62.9%Medium
Array, Hash Table
4063. Longest Subarray Divisible by K with At Most One Negation IVideo
Solution34.2%Medium
Array, Hash Table +1
4064. Longest Subarray Divisible by K with At Most One Negation IIVideo
Solution24.7%Hard
Array, Binary Search +2
4065. Rearrange Array by Removing Distinct ValuesVideo
Solution75.0%Easy
Array, Counting +5
4066. Maximum Equal Adjacent Pairs After at Most One ReplacementVideo
Solution49.8%Medium
Array, Counting +1
4067. Longest Subarray With Restricted Pair SumsVideo
Solution37.8%Medium
Array, Hash Table +1
Showing 751–797 of 797