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Problems

2,133 problems

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

Medium · 2,133 results

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TitleSolutionAcceptDifficultyTopics
1954. Minimum Garden Perimeter to Collect Enough ApplesVideo
Solution55.5%Medium
Binary Search, Math· 1 company
1958. Check if Move is LegalVideo
Solution51.2%Medium
Array, Enumeration +1· 1 company
1959. Minimum Total Space Wasted With K Resizing OperationsVideo
Solution44.6%Medium
Array, Dynamic Programming· 1 company
1962. Remove Stones to Minimize the TotalVideo
Solution66.2%Medium
Array, Greedy +1· 5 companies
1963. Minimum Number of Swaps to Make the String BalancedVideo
Solution78.0%Medium
Greedy, Stack +2· 12 companies
1966. Binary Searchable Numbers in an Unsorted ArrayVideoPremium
Solution63.3%Medium
Array, Binary Search· 3 companies
1968. Array With Elements Not Equal to Average of NeighborsVideo
Solution50.9%Medium
Array, Greedy +1· 1 company
1969. Minimum Non-Zero Product of the Array ElementsVideo
Solution37.5%Medium
Greedy, Math +1· 2 companies
1973. Count Nodes Equal to Sum of DescendantsVideoPremium
Solution77.4%Medium
Binary Tree, Depth-First Search +1· 1 company
1975. Maximum Matrix SumVideo
Solution67.6%Medium
Array, Greedy +1· 6 companies
1976. Number of Ways to Arrive at DestinationVideo
Solution37.4%Medium
Dynamic Programming, Graph +2· 5 companies
1980. Find Unique Binary StringVideo
Solution81.2%Medium
Array, Backtracking +2· 5 companies
1981. Minimize the Difference Between Target and Chosen ElementsVideo
Solution36.8%Medium
Array, Dynamic Programming +1· 2 companies
1983. Widest Pair of Indices With Equal Range SumVideoPremium
Solution54.0%Medium
Array, Hash Table +1· 1 company
1985. Find the Kth Largest Integer in the ArrayVideo
Solution48.3%Medium
Array, Divide and Conquer +4· 1 company
1986. Minimum Number of Work Sessions to Finish the TasksVideo
Solution35.3%Medium
Array, Backtracking +3· 2 companies
1988. Find Cutoff Score for Each SchoolVideoPremium
Solution66.8%Medium
Database
1989. Maximum Number of People That Can Be Caught in TagVideoPremium
Solution49.4%Medium
Array, Greedy
1990. Count the Number of ExperimentsVideoPremium
Solution49.1%Medium
Database· 1 company
1992. Find All Groups of FarmlandVideo
Solution75.6%Medium
Array, Breadth-First Search +2· 2 companies
1993. Operations on TreeVideo
Solution46.3%Medium
Array, Breadth-First Search +4· 3 companies
1996. The Number of Weak Characters in the GameVideo
Solution44.7%Medium
Array, Greedy +3· 1 company
1997. First Day Where You Have Been in All the RoomsVideo
Solution40.5%Medium
Array, Dynamic Programming· 1 company
1999. Smallest Greater Multiple Made of Two DigitsVideoPremium
Solution47.4%Medium
Enumeration, Math· 1 company
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
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
2012. Sum of Beauty in the ArrayVideo
Solution51.8%Medium
Array· 1 company
2013. Detect SquaresVideo
Solution53.0%Medium
Array, Counting +2· 4 companies
2015. Average Height of Buildings in Each SegmentVideoPremium
Solution57.9%Medium
Array, Greedy +2· 1 company
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
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
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
2028. Find Missing ObservationsVideo
Solution57.5%Medium
Array, Math +1· 5 companies
2029. Stone Game IXVideo
Solution57.6%Medium
Array, Counting +3· 1 company
2031. Count Subarrays With More Ones Than ZerosVideoPremium
Solution49.7%Medium
Array, Binary Indexed Tree +5· 1 company
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
2036. Maximum Alternating Subarray SumVideoPremium
Solution40.0%Medium
Array, Dynamic Programming· 1 company
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
2041. Accepted Candidates From the InterviewsVideoPremium
Solution78.5%Medium
Database
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
2046. Sort Linked List Already Sorted Using Absolute ValuesVideoPremium
Solution67.1%Medium
Linked List, Sorting +1
2048. Next Greater Numerically Balanced NumberVideo
Solution63.1%Medium
Backtracking, Enumeration +1· 5 companies
Showing 1,051–1,100 of 2,133