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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

1601. Maximum Number of Achievable Transfer RequestsVideo

Solution64.5%Hard

Array, Backtracking +2· 1 company

1602. Find Nearest Right Node in Binary TreeVideoPremium

Solution75.2%Medium

Binary Tree, Breadth-First Search +1· 1 company

1603. Design Parking SystemVideo

Solution87.2%Easy

Counting, Design +1· 6 companies

1604. Alert Using Same Key-Card Three or More Times in a One Hour PeriodVideo

Solution46.0%Medium

Array, Hash Table +2· 5 companies

1605. Find Valid Matrix Given Row and Column SumsVideo

Solution83.0%Medium

Array, Greedy +1· 2 companies

1606. Find Servers That Handled Most Number of RequestsVideo

Solution45.9%Hard

Array, Greedy +2· 6 companies

1607. Sellers With No SalesVideoPremium

Solution54.4%Easy

1608. Special Array With X Elements Greater Than or Equal XVideo

Solution66.8%Easy

Array, Binary Search +1· 4 companies

1609. Even Odd TreeVideo

Solution67.1%Medium

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

1610. Maximum Number of Visible PointsVideo

Solution38.1%Hard

Array, Geometry +3· 6 companies

1611. Minimum One Bit Operations to Make Integers ZeroVideo

Solution78.5%Hard

Bit Manipulation, Dynamic Programming +1· 5 companies

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

1614. Maximum Nesting Depth of the ParenthesesVideo

Solution86.1%Easy

Stack, String· 7 companies

1615. Maximal Network RankVideo

Solution65.9%Medium

Graph· 1 company

1616. Split Two Strings to Make PalindromeVideo

Solution32.8%Medium

String, Two Pointers· 1 company

1617. Count Subtrees With Max Distance Between CitiesVideo

Solution67.4%Hard

Bit Manipulation, Bitmask +3

1618. Maximum Font to Fit a Sentence in a ScreenVideoPremium

Solution62.0%Medium

Array, Binary Search +2· 1 company

1619. Mean of Array After Removing Some ElementsVideo

Solution72.2%Easy

Array, Sorting· 1 company

1620. Coordinate With Maximum Network QualityVideo

Solution40.6%Medium

Array, Enumeration· 2 companies

1621. Number of Sets of K Non-Overlapping Line SegmentsVideo

Solution69.3%Medium

Combinatorics, Dynamic Programming +1· 1 company

1622. Fancy SequenceVideo

Solution41.3%Hard

Design, Math +1· 3 companies

1623. All Valid Triplets That Can Represent a CountryVideoPremium

Solution80.8%Easy

Database· 1 company

1624. Largest Substring Between Two Equal CharactersVideo

Solution68.5%Easy

Hash Table, String· 1 company

1625. Lexicographically Smallest String After Applying OperationsVideo

Solution79.4%Medium

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

1626. Best Team With No ConflictsVideo

Solution50.9%Medium

Array, Dynamic Programming +1· 2 companies

1627. Graph Connectivity With ThresholdVideo

Solution49.9%Hard

Array, Math +2· 1 company

1628. Design an Expression Tree With Evaluate FunctionVideoPremium

Solution82.4%Medium

Array, Binary Tree +4· 1 company

1629. Slowest KeyVideo

Solution59.7%Easy

Array, String· 1 company

1630. Arithmetic SubarraysVideo

Solution83.7%Medium

Array, Hash Table +1· 1 company

1631. Path With Minimum EffortVideo

Solution64.1%Medium

Array, Binary Search +5· 9 companies

1632. Rank Transform of a MatrixVideo

Solution42.7%Hard

Array, Graph +4· 3 companies

1633. Percentage of Users Attended a ContestVideo

Solution61.5%Easy

Database· 7 companies

1634. Add Two Polynomials Represented as Linked ListsVideoPremium

Solution61.1%Medium

Linked List, Math +1· 1 company

1635. Hopper Company Queries IVideoPremium

Solution47.7%Hard

Database· 1 company

1636. Sort Array by Increasing FrequencyVideo

Solution80.8%Easy

Array, Hash Table +1· 10 companies

1637. Widest Vertical Area Between Two Points Containing No PointsVideo

Solution87.3%Easy

Array, Sorting· 4 companies

1638. Count Substrings That Differ by One CharacterVideo

Solution72.4%Medium

Dynamic Programming, Enumeration +2· 1 company

1639. Number of Ways to Form a Target String Given a DictionaryVideo

Solution56.6%Hard

Array, Dynamic Programming +1· 9 companies

1640. Check Array Formation Through ConcatenationVideo

Solution57.3%Easy

Array, Hash Table

1641. Count Sorted Vowel StringsVideo

Solution79.2%Medium

Combinatorics, Dynamic Programming +1· 1 company

1642. Furthest Building You Can ReachVideo

Solution50.8%Medium

Array, Greedy +1· 15 companies

1643. Kth Smallest InstructionsVideo

Solution44.7%Hard

Array, Combinatorics +2· 1 company

1644. Lowest Common Ancestor of a Binary Tree IIVideoPremium

Solution69.6%Medium

Binary Tree, Depth-First Search +1· 4 companies

1645. Hopper Company Queries IIVideoPremium

Solution39.9%Hard

Database· 1 company

1646. Get Maximum in Generated ArrayVideo

Solution51.4%Easy

Array, Simulation· 3 companies

1647. Minimum Deletions to Make Character Frequencies UniqueVideo

Solution61.3%Medium

Greedy, Hash Table +2· 7 companies

1648. Sell Diminishing-Valued Colored BallsVideo

Solution30.5%Medium

Array, Binary Search +4· 5 companies

1649. Create Sorted Array through InstructionsVideo

Solution42.7%Hard

Array, Binary Indexed Tree +5· 2 companies

1650. Lowest Common Ancestor of a Binary Tree IIIVideoPremium

Solution83.0%Medium

Binary Tree, Hash Table +2· 10 companies

Showing 1,601–1,650 of 4,009