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464 problems

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Array194Database104Hash Table83String71Depth-First Search57Dynamic Programming49Tree48Math45Sorting43Breadth-First Search40Greedy40Binary Tree38Binary Search31Two Pointers29Matrix28All topics

Medium · Premium · 464 results

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TitleSolutionAcceptDifficultyTopics
1440. Evaluate Boolean ExpressionVideoPremium
Solution71.6%Medium
Database· 1 company
1445. Apples & OrangesVideoPremium
Solution86.0%Medium
Database· 1 company
1454. Active UsersVideoPremium
Solution36.7%Medium
Database· 1 company
1459. Rectangles AreaVideoPremium
Solution68.5%Medium
Database· 1 company
1468. Calculate SalariesVideoPremium
Solution77.2%Medium
Database
1485. Clone Binary Tree With Random PointerVideoPremium
Solution81.2%Medium
Binary Tree, Breadth-First Search +3· 2 companies
1490. Clone N-ary TreeVideoPremium
Solution83.2%Medium
Breadth-First Search, Depth-First Search +2· 1 company
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
Database
1506. Find Root of N-Ary TreeVideoPremium
Solution78.4%Medium
Bit Manipulation, Depth-First Search +2· 3 companies
1522. Diameter of N-Ary TreeVideoPremium
Solution75.4%Medium
Depth-First Search, Tree· 3 companies
1532. The Most Recent Three OrdersVideoPremium
Solution69.3%Medium
Database
1533. Find the Index of the Large IntegerVideoPremium
Solution56.7%Medium
Array, Binary Search +1· 1 company
1538. Guess the Majority in a Hidden ArrayVideoPremium
Solution68.8%Medium
Array, Interactive +1· 1 company
1549. The Most Recent Orders for Each ProductVideoPremium
Solution64.9%Medium
Database· 1 company
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
1564. Put Boxes Into the Warehouse IVideoPremium
Solution67.9%Medium
Array, Greedy +1· 3 companies
1570. Dot Product of Two Sparse VectorsVideoPremium
Solution89.9%Medium
Array, Design +2· 12 companies
1580. Put Boxes Into the Warehouse IIVideoPremium
Solution66.6%Medium
Array, Greedy +1· 2 companies
1586. Binary Search Tree Iterator IIVideoPremium
Solution63.4%Medium
Binary Search Tree, Binary Tree +4· 1 company
1596. The Most Frequently Ordered Products for Each CustomerVideoPremium
Solution77.7%Medium
Database· 1 company
1602. Find Nearest Right Node in Binary TreeVideoPremium
Solution75.2%Medium
Binary Tree, Breadth-First Search +1· 1 company
1612. Check If Two Expression Trees are EquivalentVideoPremium
Solution71.8%Medium
Binary Tree, Counting +3· 1 company
1613. Find the Missing IDsVideoPremium
Solution73.0%Medium
Database· 1 company
1618. Maximum Font to Fit a Sentence in a ScreenVideoPremium
Solution62.0%Medium
Array, Binary Search +2· 1 company
1628. Design an Expression Tree With Evaluate FunctionVideoPremium
Solution82.4%Medium
Array, Binary Tree +4· 1 company
1634. Add Two Polynomials Represented as Linked ListsVideoPremium
Solution61.1%Medium
Linked List, Math +1· 1 company
1644. Lowest Common Ancestor of a Binary Tree IIVideoPremium
Solution69.6%Medium
Binary Tree, Depth-First Search +1· 4 companies
1650. Lowest Common Ancestor of a Binary Tree IIIVideoPremium
Solution83.0%Medium
Binary Tree, Hash Table +2· 10 companies
1660. Correct a Binary TreeVideoPremium
Solution74.3%Medium
Binary Tree, Breadth-First Search +3· 1 company
1666. Change the Root of a Binary TreeVideoPremium
Solution74.4%Medium
Binary Tree, Depth-First Search +1· 1 company
1676. Lowest Common Ancestor of a Binary Tree IVVideoPremium
Solution79.6%Medium
Binary Tree, Depth-First Search +2· 4 companies
1682. Longest Palindromic Subsequence IIVideoPremium
Solution50.1%Medium
Dynamic Programming, String
1698. Number of Distinct Substrings in a StringVideoPremium
Solution64.4%Medium
Hash Function, Rolling Hash +3· 4 companies
1699. Number of Calls Between Two PersonsVideoPremium
Solution80.6%Medium
Database· 1 company
1709. Biggest Window Between VisitsVideoPremium
Solution69.6%Medium
Database
1715. Count Apples and OrangesVideoPremium
Solution75.6%Medium
Database
1730. Shortest Path to Get FoodVideoPremium
Solution57.7%Medium
Array, Breadth-First Search +1· 2 companies
1740. Find Distance in a Binary TreeVideoPremium
Solution74.3%Medium
Binary Tree, Breadth-First Search +3· 2 companies
1746. Maximum Subarray Sum After One OperationVideoPremium
Solution65.2%Medium
Array, Dynamic Programming· 1 company
1747. Leetflex Banned AccountsVideoPremium
Solution61.6%Medium
Database· 1 company
1756. Design Most Recently Used QueueVideoPremium
Solution78.0%Medium
Array, Binary Indexed Tree +4· 2 companies
1762. Buildings With an Ocean ViewVideoPremium
Solution80.9%Medium
Array, Monotonic Stack +1· 5 companies
1772. Sort Features by PopularityVideoPremium
Solution66.4%Medium
Array, Hash Table +2· 1 company
1778. Shortest Path in a Hidden GridVideoPremium
Solution44.5%Medium
Breadth-First Search, Depth-First Search +2· 3 companies
1783. Grand Slam TitlesVideoPremium
Solution83.2%Medium
Database· 1 company
1794. Count Pairs of Equal Substrings With Minimum DifferenceVideoPremium
Solution62.7%Medium
Greedy, Hash Table +1· 1 company
1804. Implement Trie II (Prefix Tree)VideoPremium
Solution63.6%Medium
Design, Hash Table +2· 2 companies
1810. Minimum Path Cost in a Hidden GridVideoPremium
Solution58.7%Medium
Breadth-First Search, Depth-First Search +3· 2 companies
Showing 151–200 of 464