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Problems

10 problems

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Linked ListArray194Database104Hash Table83String71Depth-First Search57Dynamic Programming49Tree48Math45Sorting43Breadth-First Search40Greedy40Binary Tree38Binary Search31Two Pointers29Matrix28All topics

Medium · Premium · 10 results

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TitleSolutionAcceptDifficultyTopics
369. Plus One Linked ListVideoPremium
Solution61.1%Medium
Linked List, Math· 2 companies
379. Design Phone DirectoryVideoPremium
Solution53.3%Medium
Array, Design +3· 1 company
426. Convert Binary Search Tree to Sorted Doubly Linked ListVideoPremium
Solution65.2%Medium
Binary Search Tree, Binary Tree +5· 4 companies
708. Insert into a Sorted Circular Linked ListVideoPremium
Solution38.5%Medium
Linked List· 4 companies
1265. Print Immutable Linked List in ReverseVideoPremium
Solution94.0%Medium
Linked List, Recursion +2
1634. Add Two Polynomials Represented as Linked ListsVideoPremium
Solution61.1%Medium
Linked List, Math +1· 1 company
1836. Remove Duplicates From an Unsorted Linked ListVideoPremium
Solution75.6%Medium
Hash Table, Linked List· 2 companies
2046. Sort Linked List Already Sorted Using Absolute ValuesVideoPremium
Solution67.1%Medium
Linked List, Sorting +1
2674. Split a Circular Linked ListVideoPremium
Solution78.1%Medium
Linked List, Two Pointers
3294. Convert Doubly Linked List to Array IIVideoPremium
Solution83.3%Medium
Array, Doubly-Linked List +1
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