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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

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TitleSolutionAcceptDifficultyTopics

1462. Course Schedule IVVideo

Solution60.4%Medium

Breadth-First Search, Depth-First Search +2· 6 companies

1465. Maximum Area of a Piece of Cake After Horizontal and Vertical CutsVideo

Solution41.1%Medium

Array, Greedy +1· 4 companies

1466. Reorder Routes to Make All Paths Lead to the City ZeroVideo

Solution65.7%Medium

Breadth-First Search, Depth-First Search +1· 5 companies

1468. Calculate SalariesVideoPremium

Solution77.2%Medium

1471. The k Strongest Values in an ArrayVideo

Solution62.6%Medium

Array, Sorting +1· 1 company

1472. Design Browser HistoryVideo

Solution78.3%Medium

Array, Data Stream +4· 13 companies

1476. Subrectangle QueriesVideo

Solution86.3%Medium

Array, Design +1· 3 companies

1477. Find Two Non-overlapping Sub-arrays Each With Target SumVideo

Solution49.5%Medium

Array, Binary Search +3· 1 company

1481. Least Number of Unique Integers after K RemovalsVideo

Solution63.8%Medium

Array, Counting +3· 7 companies

1482. Minimum Number of Days to Make m BouquetsVideo

Solution56.9%Medium

Array, Binary Search· 9 companies

1485. Clone Binary Tree With Random PointerVideoPremium

Solution81.2%Medium

Binary Tree, Breadth-First Search +3· 2 companies

1487. Making File Names UniqueVideo

Solution38.5%Medium

Array, Hash Table +1· 1 company

1488. Avoid Flood in The CityVideo

Solution39.0%Medium

Array, Binary Search +3· 6 companies

1490. Clone N-ary TreeVideoPremium

Solution83.2%Medium

Breadth-First Search, Depth-First Search +2· 1 company

1492. The kth Factor of nVideo

Solution70.8%Medium

Math, Number Theory· 7 companies

1493. Longest Subarray of 1's After Deleting One ElementVideo

Solution71.7%Medium

Array, Dynamic Programming +1· 8 companies

1497. Check If Array Pairs Are Divisible by kVideo

Solution46.2%Medium

Array, Counting +1· 8 companies

1498. Number of Subsequences That Satisfy the Given Sum ConditionVideo

Solution49.2%Medium

Array, Binary Search +2· 6 companies

1500. Design a File Sharing SystemVideoPremium

Solution41.7%Medium

Data Stream, Design +3· 1 company

1501. Countries You Can Safely Invest InVideoPremium

Solution50.9%Medium

1503. Last Moment Before All Ants Fall Out of a PlankVideo

Solution68.3%Medium

Array, Brainteaser +1· 1 company

1504. Count Submatrices With All OnesVideo

Solution71.0%Medium

Array, Dynamic Programming +3· 4 companies

1506. Find Root of N-Ary TreeVideoPremium

Solution78.4%Medium

Bit Manipulation, Depth-First Search +2· 3 companies

1508. Range Sum of Sorted Subarray SumsVideo

Solution63.2%Medium

Array, Binary Search +2· 3 companies

1509. Minimum Difference Between Largest and Smallest Value in Three MovesVideo

Solution59.2%Medium

Array, Greedy +1· 2 companies

1513. Number of Substrings With Only 1sVideo

Solution57.4%Medium

Math, String· 3 companies

1514. Path with Maximum ProbabilityVideo

Solution65.9%Medium

Array, Graph +2· 5 companies

1519. Number of Nodes in the Sub-Tree With the Same LabelVideo

Solution55.5%Medium

Breadth-First Search, Counting +3· 2 companies

1522. Diameter of N-Ary TreeVideoPremium

Solution75.4%Medium

Depth-First Search, Tree· 3 companies

1524. Number of Sub-arrays With Odd SumVideo

Solution55.7%Medium

Array, Dynamic Programming +2· 6 companies

1525. Number of Good Ways to Split a StringVideo

Solution68.2%Medium

Bit Manipulation, Dynamic Programming +2· 2 companies

1529. Minimum Suffix FlipsVideo

Solution73.9%Medium

Greedy, String· 5 companies

1530. Number of Good Leaf Nodes PairsVideo

Solution71.9%Medium

Binary Tree, Depth-First Search +1· 3 companies

1532. The Most Recent Three OrdersVideoPremium

Solution69.3%Medium

1533. Find the Index of the Large IntegerVideoPremium

Solution56.7%Medium

Array, Binary Search +1· 1 company

1535. Find the Winner of an Array GameVideo

Solution56.8%Medium

Array, Simulation· 4 companies

1536. Minimum Swaps to Arrange a Binary GridVideo

Solution70.1%Medium

Array, Greedy +1· 2 companies

1538. Guess the Majority in a Hidden ArrayVideoPremium

Solution68.8%Medium

Array, Interactive +1· 1 company

1540. Can Convert String in K MovesVideo

Solution37.6%Medium

Hash Table, String· 1 company

1541. Minimum Insertions to Balance a Parentheses StringVideo

Solution61.8%Medium

Greedy, Stack +1· 3 companies

1545. Find Kth Bit in Nth Binary StringVideo

Solution73.7%Medium

Recursion, Simulation +1· 5 companies

1546. Maximum Number of Non-Overlapping Subarrays With Sum Equals TargetVideo

Solution49.4%Medium

Array, Greedy +2· 1 company

1549. The Most Recent Orders for Each ProductVideoPremium

Solution64.9%Medium

Database· 1 company

1551. Minimum Operations to Make Array EqualVideo

Solution82.8%Medium

Math· 2 companies

1552. Magnetic Force Between Two BallsVideo

Solution72.6%Medium

Array, Binary Search +1· 9 companies

1554. Strings Differ by One CharacterVideoPremium

Solution39.4%Medium

Hash Function, Hash Table +2· 1 company

1555. Bank Account SummaryVideoPremium

Solution52.4%Medium

Database· 1 company

1557. Minimum Number of Vertices to Reach All NodesVideo

Solution81.6%Medium

Graph· 4 companies

1558. Minimum Numbers of Function Calls to Make Target ArrayVideo

Solution62.9%Medium

Array, Bit Manipulation +1· 1 company

1559. Detect Cycles in 2D GridVideo

Solution63.2%Medium

Array, Breadth-First Search +3· 6 companies

Showing 801–850 of 2,133