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Problems

970 problems

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Array447String248Hash Table189Math173Database113Sorting100Simulation93Two Pointers70Counting69Bit Manipulation54Greedy51Matrix41Tree40Depth-First Search39Binary Tree37All topics

Easy · With video · 970 results

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TitleSolutionAcceptDifficultyTopics
605. Can Place FlowersVideo
Solution28.8%Easy
Array, Greedy· 16 companies
607. Sales PersonVideo
Solution66.6%Easy
Database· 4 companies
610. Triangle JudgementVideo
Solution75.4%Easy
Database· 5 companies
613. Shortest Distance in a LineVideoPremium
Solution80.0%Easy
Database
617. Merge Two Binary TreesVideo
Solution79.2%Easy
Binary Tree, Breadth-First Search +2· 8 companies
619. Biggest Single NumberVideo
Solution72.4%Easy
Database· 3 companies
620. Not Boring MoviesVideo
Solution75.3%Easy
Database· 5 companies
627. Swap SalaryVideo
Solution83.6%Easy
Database
627. Swap Sex of EmployeesVideo
Solution85.1%Easy
Database· 5 companies
628. Maximum Product of Three NumbersVideo
Solution48.0%Easy
Array, Math +1· 15 companies
637. Average of Levels in Binary TreeVideo
Solution74.8%Easy
Binary Tree, Breadth-First Search +2· 4 companies
643. Maximum Average Subarray IVideo
Solution49.2%Easy
Array, Sliding Window· 12 companies
645. Set MismatchVideo
Solution43.4%Easy
Array, Bit Manipulation +2· 7 companies
653. Two Sum IV - Input is a BSTVideo
Solution63.7%Easy
Binary Search Tree, Binary Tree +5· 8 companies
657. Robot Return to OriginVideo
Solution78.0%Easy
Simulation, String· 5 companies
661. Image SmootherVideo
Solution69.8%Easy
Array, Matrix· 6 companies
671. Second Minimum Node In a Binary TreeVideo
Solution46.0%Easy
Binary Tree, Depth-First Search +1· 2 companies
674. Longest Continuous Increasing SubsequenceVideo
Solution52.5%Easy
Array· 5 companies
680. Valid Palindrome IIVideo
Solution44.7%Easy
Greedy, String +1· 16 companies
682. Baseball GameVideo
Solution80.8%Easy
Array, Simulation +1· 6 companies
693. Binary Number with Alternating BitsVideo
Solution69.8%Easy
Bit Manipulation· 5 companies
696. Count Binary SubstringsVideo
Solution70.3%Easy
String, Two Pointers· 18 companies
697. Degree of an ArrayVideo
Solution58.8%Easy
Array, Hash Table· 12 companies
700. Search in a Binary Search TreeVideo
Solution83.1%Easy
Binary Search Tree, Binary Tree +1· 5 companies
703. Kth Largest Element in a StreamVideo
Solution61.4%Easy
Binary Search Tree, Binary Tree +4· 11 companies
704. Binary SearchVideo
Solution61.2%Easy
Array, Binary Search· 11 companies
705. Design HashSetVideo
Solution67.9%Easy
Array, Design +3· 6 companies
706. Design HashMapVideo
Solution66.5%Easy
Array, Design +3· 13 companies
709. To Lower CaseVideo
Solution84.8%Easy
String· 3 companies
717. 1-bit and 2-bit CharactersVideo
Solution49.5%Easy
Array· 4 companies
724. Find Pivot IndexVideo
Solution64.2%Easy
Array, Prefix Sum· 18 companies
728. Self Dividing NumbersVideo
Solution81.3%Easy
Math· 5 companies
733. Flood FillVideo
Solution68.6%Easy
Array, Breadth-First Search +2· 12 companies
734. Sentence SimilarityVideoPremium
Solution44.5%Easy
Array, Hash Table +1· 1 company
744. Find Smallest Letter Greater Than TargetVideo
Solution59.6%Easy
Array, Binary Search· 7 companies
746. Min Cost Climbing StairsVideo
Solution68.7%Easy
Array, Dynamic Programming· 7 companies
747. Largest Number At Least Twice of OthersVideo
Solution53.4%Easy
Array, Sorting· 4 companies
748. Shortest Completing WordVideo
Solution63.5%Easy
Array, Hash Table +1· 1 company
760. Find Anagram MappingsVideoPremium
Solution83.8%Easy
Array, Hash Table· 1 company
762. Prime Number of Set Bits in Binary RepresentationVideo
Solution78.7%Easy
Bit Manipulation, Math· 2 companies
766. Toeplitz MatrixVideo
Solution69.8%Easy
Array, Matrix· 4 companies
771. Jewels and StonesVideo
Solution89.5%Easy
Hash Table, String· 6 companies
783. Minimum Distance Between BST NodesVideo
Solution61.8%Easy
Binary Search Tree, Binary Tree +3· 4 companies
796. Rotate StringVideo
Solution66.6%Easy
String, String Matching· 12 companies
800. Similar RGB ColorVideoPremium
Solution68.6%Easy
Enumeration, Math +1· 1 company
804. Unique Morse Code WordsVideo
Solution83.6%Easy
Array, Hash Table +1· 3 companies
806. Number of Lines To Write StringVideo
Solution72.9%Easy
Array, String· 2 companies
812. Largest Triangle AreaVideo
Solution72.1%Easy
Array, Geometry +1· 3 companies
819. Most Common WordVideo
Solution45.0%Easy
Array, Counting +2· 5 companies
821. Shortest Distance to a CharacterVideo
Solution72.7%Easy
Array, String +1· 4 companies
Showing 151–200 of 970