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Problems

797 problems

Has videoPremium onlyReset
Array2,237String877Hash Table797Math691Dynamic Programming673Sorting508Greedy485Binary Search357Depth-First Search338Database308Bit Manipulation286Matrix279Tree264Breadth-First Search257Prefix Sum252All topics

797 results

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TitleSolutionAcceptDifficultyTopics
1590. Make Sum Divisible by PVideo
Solution42.6%Medium
Array, Hash Table +1· 7 companies
1593. Split a String Into the Max Number of Unique SubstringsVideo
Solution68.8%Medium
Backtracking, Hash Table +1· 5 companies
1600. Throne InheritanceVideo
Solution68.2%Medium
Depth-First Search, Design +2· 2 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
1612. Check If Two Expression Trees are EquivalentVideoPremium
Solution71.8%Medium
Binary Tree, Counting +3· 1 company
1624. Largest Substring Between Two Equal CharactersVideo
Solution68.5%Easy
Hash Table, String· 1 company
1630. Arithmetic SubarraysVideo
Solution83.7%Medium
Array, Hash Table +1· 1 company
1636. Sort Array by Increasing FrequencyVideo
Solution80.8%Easy
Array, Hash Table +1· 10 companies
1638. Count Substrings That Differ by One CharacterVideo
Solution72.4%Medium
Dynamic Programming, Enumeration +2· 1 company
1640. Check Array Formation Through ConcatenationVideo
Solution57.3%Easy
Array, Hash Table
1647. Minimum Deletions to Make Character Frequencies UniqueVideo
Solution61.3%Medium
Greedy, Hash Table +2· 7 companies
1650. Lowest Common Ancestor of a Binary Tree IIIVideoPremium
Solution83.0%Medium
Binary Tree, Hash Table +2· 10 companies
1656. Design an Ordered StreamVideo
Solution82.6%Easy
Array, Data Stream +2· 3 companies
1657. Determine if Two Strings Are CloseVideo
Solution54.2%Medium
Counting, Hash Table +2· 7 companies
1658. Minimum Operations to Reduce X to ZeroVideo
Solution45.0%Medium
Array, Binary Search +3· 4 companies
1660. Correct a Binary TreeVideoPremium
Solution74.3%Medium
Binary Tree, Breadth-First Search +3· 1 company
1674. Minimum Moves to Make Array ComplementaryVideo
Solution65.2%Medium
Array, Hash Table +1· 5 companies
1676. Lowest Common Ancestor of a Binary Tree IVVideoPremium
Solution79.6%Medium
Binary Tree, Depth-First Search +2· 4 companies
1679. Max Number of K-Sum PairsVideo
Solution57.5%Medium
Array, Hash Table +2· 7 companies
1684. Count the Number of Consistent StringsVideo
Solution88.1%Easy
Array, Bit Manipulation +3· 3 companies
1695. Maximum Erasure ValueVideo
Solution64.2%Medium
Array, Hash Table +1· 7 companies
1711. Count Good MealsVideo
Solution33.3%Medium
Array, Hash Table· 4 companies
1713. Minimum Operations to Make a SubsequenceVideo
Solution50.3%Hard
Array, Binary Search +2· 2 companies
1726. Tuple with Same ProductVideo
Solution70.1%Medium
Array, Counting +1· 5 companies
1733. Minimum Number of People to TeachVideo
Solution67.7%Medium
Array, Greedy +1· 4 companies
1737. Change Minimum Characters to Satisfy One of Three ConditionsVideo
Solution38.4%Medium
Counting, Hash Table +2· 1 company
1740. Find Distance in a Binary TreeVideoPremium
Solution74.3%Medium
Binary Tree, Breadth-First Search +3· 2 companies
1742. Maximum Number of Balls in a BoxVideo
Solution74.8%Easy
Counting, Hash Table +1· 3 companies
1743. Restore the Array From Adjacent PairsVideo
Solution74.7%Medium
Array, Depth-First Search +1· 9 companies
1748. Sum of Unique ElementsVideo
Solution80.4%Easy
Array, Counting +1· 4 companies
1756. Design Most Recently Used QueueVideoPremium
Solution78.0%Medium
Array, Binary Indexed Tree +4· 2 companies
1763. Longest Nice SubstringVideo
Solution64.4%Easy
Bit Manipulation, Divide and Conquer +3· 4 companies
1772. Sort Features by PopularityVideoPremium
Solution66.4%Medium
Array, Hash Table +2· 1 company
1775. Equal Sum Arrays With Minimum Number of OperationsVideo
Solution54.6%Medium
Array, Counting +2· 1 company
1781. Sum of Beauty of All SubstringsVideo
Solution74.9%Medium
Counting, Hash Table +1· 6 companies
1788. Maximize the Beauty of the GardenVideoPremium
Solution62.8%Hard
Array, Greedy +2· 1 company
1790. Check if One String Swap Can Make Strings EqualVideo
Solution49.5%Easy
Counting, Hash Table +1· 5 companies
1794. Count Pairs of Equal Substrings With Minimum DifferenceVideoPremium
Solution62.7%Medium
Greedy, Hash Table +1· 1 company
1796. Second Largest Digit in a StringVideo
Solution55.2%Easy
Hash Table, String· 4 companies
1797. Design Authentication ManagerVideo
Solution58.5%Medium
Design, Doubly-Linked List +2· 11 companies
1804. Implement Trie II (Prefix Tree)VideoPremium
Solution63.6%Medium
Design, Hash Table +2· 2 companies
1805. Number of Different Integers in a StringVideo
Solution40.2%Easy
Hash Table, String
1807. Evaluate the Bracket Pairs of a StringVideo
Solution80.8%Medium
Array, Hash Table +1· 2 companies
1814. Count Nice Pairs in an ArrayVideo
Solution48.6%Medium
Array, Counting +2· 6 companies
1817. Finding the Users Active MinutesVideo
Solution81.0%Medium
Array, Hash Table· 2 companies
1832. Check if the Sentence Is PangramVideo
Solution84.2%Easy
Hash Table, String· 6 companies
1836. Remove Duplicates From an Unsorted Linked ListVideoPremium
Solution75.6%Medium
Hash Table, Linked List· 2 companies
1852. Distinct Numbers in Each SubarrayVideoPremium
Solution77.3%Medium
Array, Hash Table +1· 1 company
1857. Largest Color Value in a Directed GraphVideo
Solution57.3%Hard
Counting, Dynamic Programming +4· 5 companies
1865. Finding Pairs With a Certain SumVideo
Solution61.6%Medium
Array, Design +1· 8 companies
Showing 301–350 of 797