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2,133 problems

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Array1,212 Hash Table473 String437 Math331 Greedy330 Dynamic Programming327 Sorting302 Depth-First Search208 Binary Search189 Breadth-First Search166 Matrix163 Tree158 Prefix Sum155 Two Pointers150 Database137 All topics

Medium · 2,133 results

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TitleSolutionAcceptDifficultyTopics

3828. Final Element After Subarray DeletionsVideo

Solution40.9%Medium

Array, Brainteaser +2· 1 company

3829. Design Ride Sharing SystemVideo

Solution62.6%Medium

Data Stream, Design +2· 1 company

3831. Median of a Binary Search Tree LevelVideoPremium

Solution86.4%Medium

Binary Search Tree, Binary Tree +3

3834. Merge Adjacent Equal ElementsVideo

Solution42.6%Medium

Array, Simulation +1

3835. Count Subarrays With Cost Less Than or Equal to KVideo

Solution46.1%Medium

Array, Monotonic Queue +1

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

3840. House Robber VVideo

Solution53.3%Medium

Array, Dynamic Programming

3843. First Element with Unique FrequencyVideo

Solution69.9%Medium

Array, Counting +1

3844. Longest Almost-Palindromic SubstringVideo

Solution22.8%Medium

Dynamic Programming, String +1

3846. Total Distance to Type a String Using One FingerVideoPremium

Solution89.9%Medium

Hash Table, String

3847. Find the Score Difference in a GameVideo

Solution71.8%Medium

Array, Simulation

3848. Check Digitorial PermutationVideo

Solution46.4%Medium

Counting, Math· 1 company

3849. Maximum Bitwise XOR After RearrangementVideo

Solution70.4%Medium

Bit Manipulation, Greedy +1

3851. Maximum Requests Without Violating the LimitPremium

Solution64.1%Medium

Array, Greedy +3

3853. Merge Close CharactersVideo

Solution53.9%Medium

Hash Table, String· 1 company

3854. Minimum Operations to Make Array Parity AlternatingVideo

Solution17.1%Medium

3857. Minimum Cost to Split into OnesVideo

Solution82.6%Medium

Dynamic Programming, Math· 1 company

3858. Minimum Bitwise OR From GridVideo

Solution27.5%Medium

Array, Bit Manipulation +2· 1 company

3860. Unique Email GroupsPremium

Solution84.8%Medium

Array, Hash Table +1

3862. Find the Smallest Balanced IndexVideo

Solution19.2%Medium

Array, Prefix Sum· 2 companies

3863. Minimum Operations to Sort a StringVideo

Solution39.0%Medium

String· 1 company

3865. Reverse K SubarraysPremium

Solution88.6%Medium

Array, Two Pointers

3867. Sum of GCD of Formed PairsVideo

Solution75.1%Medium

Array, Math +3· 1 company

3868. Minimum Cost to Equalize Arrays Using SwapsVideo

Solution48.7%Medium

Array, Counting +2· 2 companies

3871. Count Commas in Range IIVideo

Solution49.3%Medium

3872. Longest Arithmetic Sequence After Changing At Most One ElementVideo

Solution21.4%Medium

Array, Enumeration· 1 company

3874. Valid Subarrays With Exactly One PeakPremium

Solution67.5%Medium

–

3876. Construct Uniform Parity Array IIVideo

Solution66.3%Medium

Array, Math· 1 company

3877. Minimum Removals to Achieve Target XORVideo

Solution41.2%Medium

Array, Bit Manipulation +1

3879. Maximum Distinct Path Sum in a Binary TreePremium

Solution51.2%Medium

–

3881. Direction Assignments with Exactly K Visible PeopleVideo

Solution35.7%Medium

Combinatorics, Math

3882. Minimum XOR Path in a GridVideo

–39.5%Medium

Array, Bit Manipulation +2· 1 company

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

3891. Minimum Increase to Maximize Special IndicesVideo

Solution19.8%Medium

Array, Dynamic Programming +2· 1 company

3893. Maximum Team Size with Overlapping IntervalsPremium

Solution42.6%Medium

–· 2 companies

3895. Count Digit AppearancesVideo

Solution86.2%Medium

3896. Minimum Operations to Transform Array into Alternating PrimeVideo

Solution53.2%Medium

Array, Binary Search +4· 1 company

3899. Angles of a TriangleVideo

Solution62.5%Medium

Array, Geometry +1

3900. Longest Balanced Substring After One SwapVideo

Solution14.2%Medium

Hash Table, Prefix Sum +1· 1 company

3902. Zigzag Level Sum of Binary TreePremium

Solution68.7%Medium

–

3904. Smallest Stable Index IIVideo

Solution74.7%Medium

3905. Multi Source Flood FillVideo

Solution56.3%Medium

Array, Breadth-First Search +1

3907. Count Smaller Elements With Opposite ParityVideoPremium

Solution71.5%Medium

–

3909. Compare Sums of Bitonic PartsVideo

Solution52.8%Medium

3913. Sort Vowels by FrequencyVideo

Solution61.5%Medium

Counting, Sorting +1

3914. Minimum Operations to Make Array Non DecreasingVideo

Solution54.9%Medium

Array, Greedy· 1 company

3918. Sum of Primes Between Number and Its ReverseVideo

Solution75.3%Medium

Math, Number Theory

Showing 2,001–2,050 of 2,133