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Problems

264 problems

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

264 results

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TitleSolutionAcceptDifficultyTopics
2458. Height of Binary Tree After Subtree Removal QueriesVideo
Solution55.0%Hard
Array, Binary Tree +3· 3 companies
2467. Most Profitable Path in a TreeVideo
Solution67.3%Medium
Array, Breadth-First Search +3· 6 companies
2471. Minimum Number of Operations to Sort a Binary Tree by LevelVideo
Solution74.2%Medium
Binary Tree, Breadth-First Search +1· 3 companies
2476. Closest Nodes Queries in a Binary Search TreeVideo
Solution44.9%Medium
Array, Binary Search +4· 1 company
2477. Minimum Fuel Cost to Report to the CapitalVideo
Solution65.0%Medium
Breadth-First Search, Depth-First Search +2· 5 companies
2479. Maximum XOR of Two Non-Overlapping SubtreesPremium
Solution51.3%Hard
Depth-First Search, Graph +2· 2 companies
2509. Cycle Length Queries in a TreeVideo
Solution60.9%Hard
Array, Binary Tree +1· 1 company
2538. Difference Between Maximum and Minimum Price SumVideo
Solution34.5%Hard
Array, Depth-First Search +2· 2 companies
2581. Count Number of Possible Root NodesVideo
Solution49.3%Hard
Array, Depth-First Search +3
2583. Kth Largest Sum in a Binary TreeVideo
Solution59.4%Medium
Binary Tree, Breadth-First Search +2· 5 companies
2603. Collect Coins in a TreeVideo
Solution40.2%Hard
Array, Graph +2· 13 companies
2641. Cousins in Binary Tree IIVideo
Solution75.8%Medium
Binary Tree, Breadth-First Search +3· 2 companies
2646. Minimize the Total Price of the TripsVideo
Solution48.5%Hard
Array, Depth-First Search +3
2673. Make Costs of Paths Equal in a Binary TreeVideo
Solution57.2%Medium
Array, Binary Tree +3· 1 company
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
2791. Count Paths That Can Form a Palindrome in a TreeVideo
Solution52.6%Hard
Bit Manipulation, Bitmask +3· 4 companies
2792. Count Nodes That Are Great EnoughVideoPremium
Solution57.1%Hard
Binary Tree, Depth-First Search +2
2846. Minimum Edge Weight Equilibrium Queries in a TreeVideo
Solution46.7%Hard
Array, Graph +2· 1 company
2867. Count Valid Paths in a TreeVideo
Solution36.2%Hard
Depth-First Search, Dynamic Programming +3· 1 company
2872. Maximum Number of K-Divisible ComponentsVideo
Solution74.1%Hard
Depth-First Search, Tree· 4 companies
2920. Maximum Points After Collecting Coins From All NodesVideo
Solution36.6%Hard
Array, Bit Manipulation +3· 1 company
2925. Maximum Score After Applying Operations on a TreeVideo
Solution47.2%Medium
Depth-First Search, Dynamic Programming +1· 1 company
2973. Find Number of Coins to Place in Tree NodesVideo
Solution37.4%Hard
Depth-First Search, Dynamic Programming +3· 1 company
3004. Maximum Subtree of the Same ColorVideoPremium
Solution59.2%Medium
Array, Depth-First Search +2· 2 companies
3067. Count Pairs of Connectable Servers in a Weighted Tree NetworkVideo
Solution55.6%Medium
Array, Depth-First Search +1· 2 companies
3068. Find the Maximum Sum of Node ValuesVideo
Solution69.5%Hard
Array, Bit Manipulation +4· 4 companies
3157. Find the Level of Tree with Minimum SumVideoPremium
Solution69.6%Medium
Binary Tree, Breadth-First Search +2· 1 company
3203. Find Minimum Diameter After Merging Two TreesVideo
Solution57.1%Hard
Breadth-First Search, Depth-First Search +2· 4 companies
3241. Time Taken to Mark All NodesVideo
Solution29.5%Hard
Depth-First Search, Dynamic Programming +2
3249. Count the Number of Good NodesVideo
Solution55.0%Medium
Depth-First Search, Tree
3313. Find the Last Marked Nodes in TreeVideoPremium
Solution57.1%Hard
Depth-First Search, Tree· 1 company
3319. K-th Largest Perfect Subtree Size in Binary TreeVideo
Solution61.6%Medium
Binary Tree, Depth-First Search +2· 1 company
3327. Check if DFS Strings Are PalindromesVideo
Solution20.9%Hard
Array, Depth-First Search +4· 1 company
3331. Find Subtree Sizes After ChangesVideo
Solution52.8%Medium
Array, Depth-First Search +3
3367. Maximize Sum of Weights after Edge RemovalsVideo
Solution33.1%Hard
Depth-First Search, Dynamic Programming +2· 1 company
3372. Maximize the Number of Target Nodes After Connecting Trees IVideo
Solution69.5%Medium
Breadth-First Search, Depth-First Search +1· 2 companies
3373. Maximize the Number of Target Nodes After Connecting Trees IIVideo
Solution72.5%Hard
Breadth-First Search, Depth-First Search +1· 2 companies
3425. Longest Special PathVideo
–23.2%Hard
Array, Depth-First Search +3
3486. Longest Special Path IIVideo
–19.8%Hard
Array, Depth-First Search +3· 1 company
3515. Shortest Path in a Weighted TreeVideo
–41.5%Hard
Array, Binary Indexed Tree +3· 1 company
3526. Range XOR Queries with Subarray ReversalsPremium
–62.4%Hard
Array, Binary Tree +1
3544. Subtree Inversion SumVideo
–41.6%Hard
Array, Depth-First Search +2
3553. Minimum Weighted Subgraph With the Required Paths IIVideo
–48.2%Hard
Array, Bit Manipulation +3
3558. Number of Ways to Assign Edge Weights IVideo
Solution63.7%Medium
Depth-First Search, Math +1· 2 companies
3559. Number of Ways to Assign Edge Weights IIVideo
Solution71.8%Hard
Array, Bit Manipulation +4· 3 companies
3562. Maximum Profit from Trading Stocks with DiscountsVideo
Solution56.1%Hard
Array, Depth-First Search +2· 2 companies
3575. Maximum Good Subtree ScoreVideo
–44.0%Hard
Array, Bit Manipulation +4· 1 company
3585. Find Weighted Median Node in TreeVideo
Solution26.7%Hard
Array, Binary Search +4· 1 company
Showing 201–250 of 264