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Problems

78 problems

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Array301Database212Hash Table116String116Depth-First Search78Math78Dynamic Programming76Sorting64Tree63Breadth-First Search53Greedy52Binary Search50Binary Tree48Two Pointers40Matrix39All topics

Premium · 78 results

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TitleSolutionAcceptDifficultyTopics
1666. Change the Root of a Binary TreeVideoPremium
Solution74.4%Medium
Binary Tree, Depth-First Search +1· 1 company
1676. Lowest Common Ancestor of a Binary Tree IVVideoPremium
Solution79.6%Medium
Binary Tree, Depth-First Search +2· 4 companies
1740. Find Distance in a Binary TreeVideoPremium
Solution74.3%Medium
Binary Tree, Breadth-First Search +3· 2 companies
1778. Shortest Path in a Hidden GridVideoPremium
Solution44.5%Medium
Breadth-First Search, Depth-First Search +2· 3 companies
1810. Minimum Path Cost in a Hidden GridVideoPremium
Solution58.7%Medium
Breadth-First Search, Depth-First Search +3· 2 companies
1820. Maximum Number of Accepted InvitationsVideoPremium
Solution52.4%Medium
Array, Depth-First Search +2· 2 companies
1858. Longest Word With All PrefixesVideoPremium
Solution73.1%Medium
Depth-First Search, Trie· 1 company
1973. Count Nodes Equal to Sum of DescendantsVideoPremium
Solution77.4%Medium
Binary Tree, Depth-First Search +1· 1 company
2204. Distance to a Cycle in Undirected GraphVideoPremium
Solution73.4%Hard
Breadth-First Search, Depth-First Search +2· 2 companies
2277. Closest Node to Path in TreeVideoPremium
–62.1%Hard
Array, Breadth-First Search +2· 1 company
2307. Check for Contradictions in EquationsVideoPremium
Solution43.8%Hard
Array, Depth-First Search +2· 2 companies
2313. Minimum Flips in Binary Tree to Get ResultVideoPremium
Solution56.9%Hard
Binary Tree, Depth-First Search +2· 1 company
2378. Choose Edges to Maximize Score in a TreeVideoPremium
Solution57.1%Medium
Depth-First Search, Dynamic Programming +1· 1 company
2445. Number of Nodes With Value OneVideoPremium
Solution66.3%Medium
Binary Tree, Breadth-First Search +2· 1 company
2479. Maximum XOR of Two Non-Overlapping SubtreesPremium
Solution51.3%Hard
Depth-First Search, Graph +2· 2 companies
2689. Extract Kth Character From The Rope TreeVideoPremium
Solution73.4%Easy
Binary Tree, Depth-First Search +1· 1 company
2764. Is Array a Preorder of Some ‌Binary TreeVideoPremium
Solution67.8%Medium
Binary Tree, Depth-First Search +2
2773. Height of Special Binary TreeVideoPremium
Solution75.2%Medium
Binary Tree, Breadth-First Search +2
2792. Count Nodes That Are Great EnoughVideoPremium
Solution57.1%Hard
Binary Tree, Depth-First Search +2
2852. Sum of Remoteness of All CellsVideoPremium
Solution70.8%Medium
Array, Breadth-First Search +4· 1 company
3004. Maximum Subtree of the Same ColorVideoPremium
Solution59.2%Medium
Array, Depth-First Search +2· 2 companies
3157. Find the Level of Tree with Minimum SumVideoPremium
Solution69.6%Medium
Binary Tree, Breadth-First Search +2· 1 company
3313. Find the Last Marked Nodes in TreeVideoPremium
Solution57.1%Hard
Depth-First Search, Tree· 1 company
3383. Minimum Runes to Add to Cast SpellPremium
Solution45.2%Hard
Array, Breadth-First Search +4· 1 company
3385. Minimum Time to Break Locks IIPremium
Solution45.7%Hard
Array, Depth-First Search +1· 1 company
3481. Apply SubstitutionsVideoPremium
Solution78.0%Medium
Array, Breadth-First Search +5· 1 company
3535. Unit Conversion IIVideoPremium
Solution61.5%Medium
Array, Breadth-First Search +3· 1 company
3831. Median of a Binary Search Tree LevelVideoPremium
Solution86.4%Medium
Binary Search Tree, Binary Tree +3
Showing 51–78 of 78