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Problems

166 problems

Has videoPremium onlyReset
Array1,212Hash Table473String437Math331Greedy330Dynamic Programming327Sorting302Depth-First Search208Binary Search189Breadth-First Search166Matrix163Tree158Prefix Sum155Two Pointers150Database137All topics

Medium · 166 results

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TitleSolutionAcceptDifficultyTopics
797. All Paths From Source to TargetVideo
Solution83.6%Medium
Backtracking, Breadth-First Search +2· 5 companies
802. Find Eventual Safe StatesVideo
Solution71.6%Medium
Breadth-First Search, Depth-First Search +2· 7 companies
841. Keys and RoomsVideo
Solution76.2%Medium
Breadth-First Search, Depth-First Search +1· 10 companies
863. All Nodes Distance K in Binary TreeVideo
Solution68.1%Medium
Binary Tree, Breadth-First Search +3· 16 companies
865. Smallest Subtree with all the Deepest NodesVideo
Solution77.5%Medium
Binary Tree, Breadth-First Search +3· 4 companies
886. Possible BipartitionVideo
Solution53.0%Medium
Breadth-First Search, Depth-First Search +2· 11 companies
909. Snakes and LaddersVideo
Solution48.0%Medium
Array, Breadth-First Search +1· 12 companies
919. Complete Binary Tree InserterVideo
Solution65.0%Medium
Binary Tree, Breadth-First Search +2· 3 companies
934. Shortest BridgeVideo
Solution59.9%Medium
Array, Breadth-First Search +2· 16 companies
958. Check Completeness of a Binary TreeVideo
Solution59.6%Medium
Binary Tree, Breadth-First Search +1· 5 companies
959. Regions Cut By SlashesVideo
Solution77.8%Medium
Array, Breadth-First Search +4· 6 companies
967. Numbers With Same Consecutive DifferencesVideo
Solution59.1%Medium
Backtracking, Breadth-First Search· 5 companies
994. Rotting OrangesVideo
Solution59.5%Medium
Array, Breadth-First Search +1· 52 companies
1020. Number of EnclavesVideo
Solution72.2%Medium
Array, Breadth-First Search +3· 5 companies
1034. Coloring A BorderVideo
Solution51.8%Medium
Array, Breadth-First Search +2· 3 companies
1042. Flower Planting With No AdjacentVideo
Solution54.1%Medium
Breadth-First Search, Depth-First Search +1· 2 companies
1087. Brace ExpansionVideoPremium
Solution66.5%Medium
Backtracking, Breadth-First Search +1· 6 companies
1091. Shortest Path in Binary MatrixVideo
Solution51.8%Medium
Array, Breadth-First Search +1· 15 companies
1102. Path With Maximum Minimum ValueVideoPremium
Solution54.6%Medium
Array, Binary Search +5· 3 companies
1123. Lowest Common Ancestor of Deepest LeavesVideo
Solution79.5%Medium
Binary Tree, Breadth-First Search +3· 4 companies
1129. Shortest Path with Alternating ColorsVideo
Solution48.4%Medium
Breadth-First Search, Graph· 5 companies
1161. Maximum Level Sum of a Binary TreeVideo
Solution70.0%Medium
Binary Tree, Breadth-First Search +2· 4 companies
1162. As Far from Land as PossibleVideo
Solution52.2%Medium
Array, Breadth-First Search +2· 7 companies
1197. Minimum Knight MovesVideoPremium
Solution41.8%Medium
Breadth-First Search· 13 companies
1202. Smallest String With SwapsVideo
Solution61.0%Medium
Array, Breadth-First Search +5· 8 companies
1215. Stepping NumbersVideoPremium
Solution48.2%Medium
Backtracking, Breadth-First Search +1· 1 company
1236. Web CrawlerVideoPremium
Solution68.8%Medium
Breadth-First Search, Depth-First Search +2· 7 companies
1242. Web Crawler MultithreadedVideoPremium
–49.5%Medium
Breadth-First Search, Concurrency +1· 9 companies
1245. Tree DiameterVideoPremium
Solution61.1%Medium
Breadth-First Search, Depth-First Search +3· 7 companies
1254. Number of Closed IslandsVideo
Solution67.7%Medium
Array, Breadth-First Search +3· 5 companies
1257. Smallest Common RegionVideoPremium
Solution68.6%Medium
Array, Breadth-First Search +4· 1 company
1261. Find Elements in a Contaminated Binary TreeVideo
Solution84.1%Medium
Binary Tree, Breadth-First Search +4· 2 companies
1267. Count Servers that CommunicateVideo
Solution73.5%Medium
Array, Breadth-First Search +4· 6 companies
1273. Delete Tree NodesVideoPremium
Solution61.2%Medium
Array, Breadth-First Search +2· 1 company
1302. Deepest Leaves SumVideo
Solution86.3%Medium
Binary Tree, Breadth-First Search +2· 3 companies
1306. Jump Game IIIVideo
Solution70.1%Medium
Array, Breadth-First Search +1· 3 companies
1311. Get Watched Videos by Your FriendsVideo
Solution54.2%Medium
Array, Breadth-First Search +3· 3 companies
1315. Sum of Nodes with Even-Valued GrandparentVideo
Solution85.6%Medium
Binary Tree, Breadth-First Search +2· 4 companies
1319. Number of Operations to Make Network ConnectedVideo
Solution67.0%Medium
Breadth-First Search, Depth-First Search +2· 10 companies
1361. Validate Binary Tree NodesVideo
Solution44.3%Medium
Binary Tree, Breadth-First Search +4· 3 companies
1376. Time Needed to Inform All EmployeesVideo
Solution60.6%Medium
Breadth-First Search, Depth-First Search +1· 5 companies
1391. Check if There is a Valid Path in a GridVideo
Solution64.5%Medium
Array, Breadth-First Search +3· 3 companies
1430. Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary TreeVideoPremium
Solution47.6%Medium
Binary Tree, Breadth-First Search +2
1443. Minimum Time to Collect All Apples in a TreeVideo
Solution63.6%Medium
Breadth-First Search, Depth-First Search +2· 4 companies
1448. Count Good Nodes in Binary TreeVideo
Solution73.8%Medium
Binary Tree, Breadth-First Search +2· 7 companies
1457. Pseudo-Palindromic Paths in a Binary TreeVideo
Solution68.3%Medium
Binary Tree, Bit Manipulation +3· 2 companies
1462. Course Schedule IVVideo
Solution60.4%Medium
Breadth-First Search, Depth-First Search +2· 6 companies
1466. Reorder Routes to Make All Paths Lead to the City ZeroVideo
Solution65.7%Medium
Breadth-First Search, Depth-First Search +1· 5 companies
1485. Clone Binary Tree With Random PointerVideoPremium
Solution81.2%Medium
Binary Tree, Breadth-First Search +3· 2 companies
1490. Clone N-ary TreeVideoPremium
Solution83.2%Medium
Breadth-First Search, Depth-First Search +2· 1 company
Showing 51–100 of 166