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57 problems total

Array (1905)Sorting (440)Depth First Search (316)Database (301)Breadth First Search (241)Tree (240)Stack (172)Graph Theory (169)Linked List (81)Monotonic Stack (67)Queue (50)Recursion (48)Shortest Path (33)

All Topics(4301)Database(305)Networking(0)Object Oriented Design(31)Programming Languages(5)System Design(0)Algorithms(3944)

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Title	Difficulty	Videos	Companies
Find if there is a path between two vertices in a directed graph	easy	-	google facebook amazon
m Coloring Problem	medium	-	google
Largest value path in a directed graph	hard	-	google
Minimum Cost to Make at Least One Valid Path in a Grid	hard	-	google
Word Ladder 1 - Get Ladder Length	hard	-	affirm amazon apple
Surrounded Regions	medium	-	amazon ebay facebook
Clone Undirected Graph	medium		amazon apple facebook
Number of Islands	medium		adobe affirm alibaba
Course Schedule 1 - Is it Possible	medium		amazon apple bloomberg
Course Schedule 2 - Get Ordered Courses	medium	-	airbnb amazon apple
Lowest Common Ancestor of a Binary Tree	medium		adobe airbnb amazon
Graph Valid Tree	medium		amazon facebook google
Alien Dictionary	hard		airbnb amazon apple
Find the Celebrity	medium	-	amazon apple facebook
Minimum Height Trees	medium	-	amazon apple bloomberg
Number of Connected Components in an Undirected Graph	medium	-	amazon facebook google
Longest Increasing Path in a Matrix	hard	-	adobe amazon apple
Reconstruct Itinerary	hard	-	amazon apple bloomberg
Evaluate Division	medium	-	adobe amazon bloomberg
Sequence Reconstruction	medium	-	google
The Maze 1 - Can the Ball Stop at Destination	medium	-	amazon apple facebook
The Maze 3 - Shortest Instructions to Reach the Hole	hard	-	google
The Maze 2 - Shortest Distance	medium	-	amazon facebook google
Number of Provinces	medium	-	adobe amazon atlassian
Redundant Connection	medium	-	amazon google
Redundant Connection II	hard	-	google
Max Area of Island	medium	-	adobe affirm amazon
Network Delay Time	medium	-	akuna-capital amazon google
Cracking the Safe	hard	-	google
Couples Holding Hands	hard	-	amazon google spotify
Swim in Rising Water	hard	-	facebook google
Is Graph Bipartite	medium	-	amazon dropbox ebay
Cheapest Flights Within K Stops Problem	medium	-	airbnb amazon bloomberg
Find Eventual Safe States	medium	-	google
Sum of Distances in Tree	hard	-	google
Keys and Rooms	medium	-	amazon google
Shortest Path Visiting All Nodes	hard	-	amazon google meituan
Possible Bipartition	medium	-	apple facebook google
Snakes and Ladders	medium	-	amazon apple cisco
Cat and Mouse	hard	-	google
Minimize Malware Spread	hard	-	amazon bloomberg dropbox
Shortest Bridge	medium	-	facebook google mckinsey
Most Stones Removed with Same Row or Column	medium		google
Find the Town Judge	easy	-	amazon arista facebook
Shortest Way to Form String	medium	-	facebook google
All Paths from Source Lead to Destination	medium	-	amazon google
Parallel Courses	medium	-	google microsoft uber
Optimize Water Distribution in a Village	hard	-	google yahoo
Critical Connections in a Network	hard	-	adobe amazon google
Sort Items by Groups Respecting Dependencies	hard	-	google

Showing 1 to 50 of 57 results