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4,009 problems

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Array2,209 String870 Hash Table786 Math682 Dynamic Programming666 Sorting504 Greedy480 Binary Search352 Depth-First Search335 Database303 Bit Manipulation283 Matrix278 Tree261 Breadth-First Search255 Two Pointers249 All topics

With video · 4,009 results

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TitleSolutionAcceptDifficultyTopics

2001. Number of Pairs of Interchangeable RectanglesVideo

Solution53.1%Medium

Array, Counting +3· 2 companies

2002. Maximum Product of the Length of Two Palindromic SubsequencesVideo

Solution63.0%Medium

Backtracking, Bit Manipulation +3· 2 companies

2003. Smallest Missing Genetic Value in Each SubtreeVideo

Solution48.4%Hard

Depth-First Search, Dynamic Programming +2

2004. The Number of Seniors and Juniors to Join the CompanyVideoPremium

Solution46.6%Hard

2005. Subtree Removal Game with Fibonacci TreeVideoPremium

–54.9%Hard

Binary Tree, Dynamic Programming +3· 1 company

2006. Count Number of Pairs With Absolute Difference KVideo

Solution85.4%Easy

Array, Counting +1· 4 companies

2007. Find Original Array From Doubled ArrayVideo

Solution41.0%Medium

Array, Greedy +2· 6 companies

2008. Maximum Earnings From TaxiVideo

Solution46.9%Medium

Array, Binary Search +3· 8 companies

2009. Minimum Number of Operations to Make Array ContinuousVideo

Solution52.0%Hard

Array, Binary Search +2· 5 companies

2010. The Number of Seniors and Juniors to Join the Company IIVideoPremium

Solution66.2%Hard

2011. Final Value of Variable After Performing OperationsVideo

Solution90.6%Easy

Array, Simulation +1· 5 companies

2012. Sum of Beauty in the ArrayVideo

Solution51.8%Medium

Array· 1 company

2013. Detect SquaresVideo

Solution53.0%Medium

Array, Counting +2· 4 companies

2014. Longest Subsequence Repeated k TimesVideo

Solution71.3%Hard

Backtracking, Counting +3· 3 companies

2015. Average Height of Buildings in Each SegmentVideoPremium

Solution57.9%Medium

Array, Greedy +2· 1 company

2016. Maximum Difference Between Increasing ElementsVideo

Solution66.5%Easy

Array· 6 companies

2017. Grid GameVideo

Solution60.9%Medium

Array, Matrix +1· 4 companies

2018. Check if Word Can Be Placed In CrosswordVideo

Solution50.7%Medium

Array, Enumeration +1· 1 company

2019. The Score of Students Solving Math ExpressionVideo

Solution34.8%Hard

Array, Dynamic Programming +4· 2 companies

2020. Number of Accounts That Did Not StreamVideoPremium

Solution72.0%Medium

Database· 1 company

2021. Brightest Position on StreetVideoPremium

Solution60.5%Medium

Array, Ordered Set +1· 6 companies

2022. Convert 1D Array Into 2D ArrayVideo

Solution72.2%Easy

Array, Matrix +1· 5 companies

2023. Number of Pairs of Strings With Concatenation Equal to TargetVideo

Solution75.6%Medium

Array, Counting +2· 2 companies

2024. Maximize the Confusion of an ExamVideo

Solution70.4%Medium

Binary Search, Prefix Sum +2· 4 companies

2025. Maximum Number of Ways to Partition an ArrayVideo

Solution36.2%Hard

Array, Counting +3· 2 companies

2026. Low-Quality ProblemsVideoPremium

Solution83.8%Easy

2027. Minimum Moves to Convert StringVideo

Solution58.4%Easy

Greedy, String· 3 companies

2028. Find Missing ObservationsVideo

Solution57.5%Medium

Array, Math +1· 5 companies

2029. Stone Game IXVideo

Solution57.6%Medium

Array, Counting +3· 1 company

2030. Smallest K-Length Subsequence With Occurrences of a LetterVideo

Solution40.0%Hard

Greedy, Monotonic Stack +2· 1 company

2031. Count Subarrays With More Ones Than ZerosVideoPremium

Solution49.7%Medium

Array, Binary Indexed Tree +5· 1 company

2032. Two Out of ThreeVideo

Solution77.5%Easy

Array, Bit Manipulation +1· 2 companies

2033. Minimum Operations to Make a Uni-Value GridVideo

Solution70.7%Medium

Array, Math +2· 5 companies

2034. Stock Price Fluctuation Video

Solution49.1%Medium

Data Stream, Design +3· 6 companies

2035. Partition Array Into Two Arrays to Minimize Sum DifferenceVideo

Solution24.4%Hard

Array, Binary Search +5· 9 companies

2036. Maximum Alternating Subarray SumVideoPremium

Solution40.0%Medium

Array, Dynamic Programming· 1 company

2037. Minimum Number of Moves to Seat EveryoneVideo

Solution87.4%Easy

Array, Counting Sort +2· 3 companies

2038. Remove Colored Pieces if Both Neighbors are the Same ColorVideo

Solution62.8%Medium

Game Theory, Greedy +2· 3 companies

2039. The Time When the Network Becomes IdleVideo

Solution56.1%Medium

Array, Breadth-First Search +1· 3 companies

2040. Kth Smallest Product of Two Sorted ArraysVideo

Solution48.8%Hard

Array, Binary Search· 5 companies

2041. Accepted Candidates From the InterviewsVideoPremium

Solution78.5%Medium

2042. Check if Numbers Are Ascending in a SentenceVideo

Solution73.6%Easy

2043. Simple Bank SystemVideo

Solution69.7%Medium

Array, Design +2· 20 companies

2044. Count Number of Maximum Bitwise-OR SubsetsVideo

Solution89.5%Medium

Array, Backtracking +2· 7 companies

2045. Second Minimum Time to Reach DestinationVideo

Solution62.3%Hard

Breadth-First Search, Graph +1· 1 company

2046. Sort Linked List Already Sorted Using Absolute ValuesVideoPremium

Solution67.1%Medium

Linked List, Sorting +1

2047. Number of Valid Words in a SentenceVideo

Solution31.6%Easy

String· 3 companies

2048. Next Greater Numerically Balanced NumberVideo

Solution63.1%Medium

Backtracking, Enumeration +1· 5 companies

2049. Count Nodes With the Highest ScoreVideo

Solution53.2%Medium

Array, Binary Tree +2· 3 companies

2050. Parallel Courses IIIVideo

Solution67.0%Hard

Array, Dynamic Programming +2· 9 companies

Showing 2,001–2,050 of 4,009