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166 problems

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Array1,212 Hash Table473 String437 Math331 Greedy330 Dynamic Programming327 Sorting302 Depth-First Search208 Binary Search189 Breadth-First Search166 Matrix163 Tree158 Prefix Sum155 Two Pointers150 Database137 All topics

Medium · 166 results

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TitleSolutionAcceptDifficultyTopics

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

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

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

2059. Minimum Operations to Convert NumberVideo

Solution52.3%Medium

Array, Breadth-First Search· 1 company

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

2316. Count Unreachable Pairs of Nodes in an Undirected GraphVideo

Solution49.9%Medium

Breadth-First Search, Depth-First Search +2· 4 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

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

2477. Minimum Fuel Cost to Report to the CapitalVideo

Solution65.0%Medium

Breadth-First Search, Depth-First Search +2· 5 companies

2492. Minimum Score of a Path Between Two CitiesVideo

Solution66.2%Medium

Breadth-First Search, Depth-First Search +2· 5 companies

2556. Disconnect Path in a Binary Matrix by at Most One FlipVideo

Solution27.8%Medium

Array, Breadth-First Search +3· 1 company

2583. Kth Largest Sum in a Binary TreeVideo

Solution59.4%Medium

Binary Tree, Breadth-First Search +2· 5 companies

2596. Check Knight Tour ConfigurationVideo

Solution62.0%Medium

Array, Breadth-First Search +3· 3 companies

2641. Cousins in Binary Tree IIVideo

Solution75.8%Medium

Binary Tree, Breadth-First Search +3· 2 companies

2658. Maximum Number of Fish in a GridVideo

Solution70.5%Medium

Array, Breadth-First Search +3· 4 companies

2685. Count the Number of Complete ComponentsVideo

Solution80.8%Medium

Breadth-First Search, Depth-First Search +2· 4 companies

2773. Height of Special Binary TreeVideoPremium

Solution75.2%Medium

Binary Tree, Breadth-First Search +2

2812. Find the Safest Path in a GridVideo

Solution57.0%Medium

Array, Binary Search +3· 7 companies

2850. Minimum Moves to Spread Stones Over GridVideo

Solution46.1%Medium

Array, Breadth-First Search +2· 5 companies

2852. Sum of Remoteness of All CellsVideoPremium

Solution70.8%Medium

Array, Breadth-First Search +4· 1 company

2998. Minimum Number of Operations to Make X and Y EqualVideo

Solution48.4%Medium

Breadth-First Search, Dynamic Programming +1· 2 companies

3015. Count the Number of Houses at a Certain Distance IVideo

Solution58.2%Medium

Breadth-First Search, Graph +1· 1 company

3157. Find the Level of Tree with Minimum SumVideoPremium

Solution69.6%Medium

Binary Tree, Breadth-First Search +2· 1 company

3243. Shortest Distance After Road Addition Queries IVideo

Solution61.9%Medium

Array, Breadth-First Search +1· 3 companies

3286. Find a Safe Walk Through a GridVideo

Solution55.4%Medium

Array, Breadth-First Search +4· 3 companies

3310. Remove Methods From ProjectVideo

Solution70.2%Medium

Breadth-First Search, Depth-First Search +1· 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

3387. Maximize Amount After Two Days of ConversionsVideo

Solution60.6%Medium

Array, Breadth-First Search +3· 3 companies

Showing 101–150 of 166