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Problems

255 problems

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

With video · 255 results

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TitleSolutionAcceptDifficultyTopics
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
1469. Find All The Lonely NodesVideoPremium
Solution83.8%Easy
Binary Tree, Breadth-First Search +2· 1 company
1483. Kth Ancestor of a Tree NodeVideo
Solution39.7%Hard
Binary Search, Breadth-First Search +4· 3 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
1519. Number of Nodes in the Sub-Tree With the Same LabelVideo
Solution55.5%Medium
Breadth-First Search, Counting +3· 2 companies
1559. Detect Cycles in 2D GridVideo
Solution63.2%Medium
Array, Breadth-First Search +3· 6 companies
1568. Minimum Number of Days to Disconnect IslandVideo
Solution58.8%Hard
Array, Breadth-First Search +3· 4 companies
1602. Find Nearest Right Node in Binary TreeVideoPremium
Solution75.2%Medium
Binary Tree, Breadth-First Search +1· 1 company
1609. Even Odd TreeVideo
Solution67.1%Medium
Binary Tree, Breadth-First Search +1· 3 companies
1625. Lexicographically Smallest String After Applying OperationsVideo
Solution79.4%Medium
Breadth-First Search, Depth-First Search +2· 2 companies
1631. Path With Minimum EffortVideo
Solution64.1%Medium
Array, Binary Search +5· 9 companies
1654. Minimum Jumps to Reach HomeVideo
Solution30.7%Medium
Array, Breadth-First Search +1· 3 companies
1660. Correct a Binary TreeVideoPremium
Solution74.3%Medium
Binary Tree, Breadth-First Search +3· 1 company
1730. Shortest Path to Get FoodVideoPremium
Solution57.7%Medium
Array, Breadth-First Search +1· 2 companies
1740. Find Distance in a Binary TreeVideoPremium
Solution74.3%Medium
Binary Tree, Breadth-First Search +3· 2 companies
1765. Map of Highest PeakVideo
Solution76.3%Medium
Array, Breadth-First Search +1· 3 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
1905. Count Sub IslandsVideo
Solution72.8%Medium
Array, Breadth-First Search +3· 5 companies
1926. Nearest Exit from Entrance in MazeVideo
Solution49.0%Medium
Array, Breadth-First Search +1· 9 companies
1970. Last Day Where You Can Still CrossVideo
Solution68.7%Hard
Array, Binary Search +4· 4 companies
1971. Find if Path Exists in GraphVideo
Solution55.5%Easy
Breadth-First Search, Depth-First Search +2· 5 companies
1992. Find All Groups of FarmlandVideo
Solution75.6%Medium
Array, Breadth-First Search +2· 2 companies
1993. Operations on TreeVideo
Solution46.3%Medium
Array, Breadth-First Search +4· 3 companies
2039. The Time When the Network Becomes IdleVideo
Solution56.1%Medium
Array, Breadth-First Search +1· 3 companies
2045. Second Minimum Time to Reach DestinationVideo
Solution62.3%Hard
Breadth-First Search, Graph +1· 1 company
2059. Minimum Operations to Convert NumberVideo
Solution52.3%Medium
Array, Breadth-First Search· 1 company
2092. Find All People With SecretVideo
Solution48.4%Hard
Breadth-First Search, Depth-First Search +3· 3 companies
2101. Detonate the Maximum BombsVideo
Solution50.0%Medium
Array, Breadth-First Search +4· 7 companies
2146. K Highest Ranked Items Within a Price RangeVideo
Solution47.1%Medium
Array, Breadth-First Search +3· 1 company
2174. Remove All Ones With Row and Column Flips IIVideoPremium
Solution67.2%Medium
Array, Bit Manipulation +2· 1 company
2192. All Ancestors of a Node in a Directed Acyclic GraphVideo
Solution62.1%Medium
Breadth-First Search, Depth-First Search +2· 4 companies
2204. Distance to a Cycle in Undirected GraphVideoPremium
Solution73.4%Hard
Breadth-First Search, Depth-First Search +2· 2 companies
2258. Escape the Spreading FireVideo
Solution39.7%Hard
Array, Binary Search +2· 4 companies
2277. Closest Node to Path in TreeVideoPremium
–62.1%Hard
Array, Breadth-First Search +2· 1 company
2290. Minimum Obstacle Removal to Reach CornerVideo
Solution71.1%Hard
Array, Breadth-First Search +4· 2 companies
2316. Count Unreachable Pairs of Nodes in an Undirected GraphVideo
Solution49.9%Medium
Breadth-First Search, Depth-First Search +2· 4 companies
2328. Number of Increasing Paths in a GridVideo
Solution57.4%Hard
Array, Breadth-First Search +6· 2 companies
2368. Reachable Nodes With RestrictionsVideo
Solution60.8%Medium
Array, Breadth-First Search +5· 2 companies
2385. Amount of Time for Binary Tree to Be InfectedVideo
Solution65.8%Medium
Binary Tree, Breadth-First Search +3· 12 companies
2415. Reverse Odd Levels of Binary TreeVideo
Solution86.7%Medium
Binary Tree, Breadth-First Search +2· 3 companies
2445. Number of Nodes With Value OneVideoPremium
Solution66.3%Medium
Binary Tree, Breadth-First Search +2· 1 company
2458. Height of Binary Tree After Subtree Removal QueriesVideo
Solution55.0%Hard
Array, Binary Tree +3· 3 companies
Showing 151–200 of 255