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Problems

4,005 problems

Has videoPremium onlyReset
Array2,209String870Hash Table786Math682Dynamic Programming666Sorting504Greedy480Binary Search352Depth-First Search335Database303Bit Manipulation283Matrix278Tree261Breadth-First Search255Two Pointers249All topics

With video · 4,005 results

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TitleSolutionAcceptDifficultyTopics
501. Find Mode in Binary Search TreeVideo
Solution59.2%Easy
Binary Search Tree, Binary Tree +2· 4 companies
502. IPOVideo
Solution53.6%Hard
Array, Greedy +2· 9 companies
503. Next Greater Element IIVideo
Solution69.3%Medium
Array, Monotonic Stack +1· 16 companies
504. Base 7Video
Solution55.3%Easy
Math· 4 companies
505. The Maze IIVideoPremium
Solution55.0%Medium
Array, Breadth-First Search +5· 5 companies
506. Relative RanksVideo
Solution75.1%Easy
Array, Heap (Priority Queue) +1· 4 companies
507. Perfect NumberVideo
Solution50.6%Easy
Math· 8 companies
508. Most Frequent Subtree SumVideo
Solution69.6%Medium
Binary Tree, Depth-First Search +2· 3 companies
509. Fibonacci NumberVideo
Solution74.6%Easy
Dynamic Programming, Math +2· 16 companies
510. Inorder Successor in BST IIVideoPremium
Solution60.9%Medium
Binary Search Tree, Binary Tree +1· 3 companies
511. Game Play Analysis IVideo
Solution76.8%Easy
Database· 6 companies
512. Game Play Analysis IIVideoPremium
Solution54.9%Easy
Database· 2 companies
513. Find Bottom Left Tree ValueVideo
Solution72.2%Medium
Binary Tree, Breadth-First Search +2· 7 companies
514. Freedom TrailVideo
Solution59.4%Hard
Breadth-First Search, Depth-First Search +2· 3 companies
515. Find Largest Value in Each Tree RowVideo
Solution66.3%Medium
Binary Tree, Breadth-First Search +2· 8 companies
516. Longest Palindromic SubsequenceVideo
Solution65.8%Medium
Dynamic Programming, String· 15 companies
517. Super Washing MachinesVideo
Solution45.3%Hard
Array, Greedy· 2 companies
518. Coin Change IIVideo
Solution59.1%Medium
Array, Dynamic Programming· 11 companies
519. Random Flip MatrixVideo
Solution46.9%Medium
Hash Table, Math +2· 1 company
520. Detect CapitalVideo
Solution56.8%Easy
String· 4 companies
521. Longest Uncommon Subsequence IVideo
Solution62.7%Easy
String· 2 companies
522. Longest Uncommon Subsequence IIVideo
Solution45.8%Medium
Array, Hash Table +3· 1 company
523. Continuous Subarray SumVideo
Solution31.3%Medium
Array, Hash Table +2· 9 companies
524. Longest Word in Dictionary through DeletingVideo
Solution53.2%Medium
Array, Sorting +2· 2 companies
525. Contiguous ArrayVideo
Solution52.2%Medium
Array, Hash Table +1· 16 companies
526. Beautiful ArrangementVideo
Solution64.9%Medium
Array, Backtracking +3· 6 companies
527. Word AbbreviationVideoPremium
Solution62.7%Hard
Array, Greedy +3· 4 companies
528. Random Pick with WeightVideo
Solution49.0%Medium
Array, Binary Search +3· 26 companies
529. MinesweeperVideo
Solution68.7%Medium
Array, Breadth-First Search +2· 9 companies
530. Minimum Absolute Difference in BSTVideo
Solution59.3%Easy
Binary Search Tree, Binary Tree +3· 3 companies
531. Lonely Pixel IVideoPremium
Solution62.3%Medium
Array, Hash Table +1· 1 company
532. K-diff Pairs in an ArrayVideo
Solution46.3%Medium
Array, Binary Search +3· 8 companies
533. Lonely Pixel IIVideoPremium
Solution48.7%Medium
Array, Hash Table +1· 1 company
534. Game Play Analysis IIIVideoPremium
Solution81.0%Medium
Database· 1 company
535. Encode and Decode TinyURLVideo
Solution86.5%Medium
Design, Hash Function +2· 9 companies
536. Construct Binary Tree from StringVideoPremium
Solution58.7%Medium
Binary Tree, Depth-First Search +3· 3 companies
537. Complex Number MultiplicationVideo
Solution73.9%Medium
Math, Simulation +1· 3 companies
538. Convert BST to Greater TreeVideo
Solution72.1%Medium
Binary Search Tree, Binary Tree +2· 4 companies
539. Minimum Time DifferenceVideo
Solution62.7%Medium
Array, Math +2· 9 companies
540. Single Element in a Sorted ArrayVideo
Solution59.3%Medium
Array, Binary Search· 19 companies
541. Reverse String IIVideo
Solution54.7%Easy
String, Two Pointers· 7 companies
542. 01 MatrixVideo
Solution54.7%Medium
Array, Breadth-First Search +2· 14 companies
543. Diameter of Binary TreeVideo
Solution66.4%Easy
Binary Tree, Depth-First Search +1· 20 companies
544. Output Contest MatchesVideoPremium
Solution77.3%Medium
Recursion, Simulation +1· 1 company
545. Boundary of Binary TreeVideoPremium
Solution48.0%Medium
Binary Tree, Depth-First Search +1· 10 companies
546. Remove BoxesVideo
Solution49.4%Hard
Array, Dynamic Programming +1· 12 companies
547. Number of ProvincesVideo
Solution70.8%Medium
Breadth-First Search, Depth-First Search +2· 9 companies
548. Split Array with Equal SumVideoPremium
Solution50.1%Hard
Array, Hash Table +1· 1 company
549. Binary Tree Longest Consecutive Sequence IIVideoPremium
Solution50.1%Medium
Binary Tree, Depth-First Search +1· 3 companies
550. Game Play Analysis IVVideo
Solution42.8%Medium
Database· 6 companies
Showing 501–550 of 4,005