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169 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)
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TitleDifficultyVideosCompanies
Apply Substitutionsmedium-
Check if words chain to form a circlemedium-
dropbox
Digit Operations to Make Two Integers Equalmedium-
Find if there is a path between two vertices in a directed grapheasy-
googlefacebookamazon
Frequencies of Shortest Supersequenceshard-
Maximize Amount After Two Days of Conversionsmedium-
Maximum Profit from Valid Topological Order in DAGhard-
Maximum Sum of Edge Values in a Graphhard-
Maximum Weighted K-Edge Pathmedium-
Minimize the Maximum Edge Weight of Graphmedium-
Minimum Cost to Make at Least One Valid Path in a Gridhard-
google
Minimum Runes to Add to Cast Spellhard-
Minimum Time to Break Locks IIhard-
Number of Restricted Paths From First to Last Nodemedium-
Path Existence Queries in a Graph Imedium-
Path Existence Queries in a Graph IIhard-
Properties Graphmedium-
Unit Conversion Imedium-
Unit Conversion IImedium-
Clone Undirected Graphmedium
amazonapplefacebook
Course Schedule 1 - Is it Possiblemedium
amazonapplebloomberg
Course Schedule 2 - Get Ordered Coursesmedium-
airbnbamazonapple
Graph Valid Treemedium-
amazonfacebookgoogle
Alien Dictionaryhard-
airbnbamazonapple
Find the Celebritymedium-
amazonapplefacebook
Minimum Height Treesmedium-
amazonapplebloomberg
Number of Connected Components in an Undirected Graphmedium-
amazonfacebookgoogle
Longest Increasing Path in a Matrixhard-
adobeamazonapple
Reconstruct Itineraryhard-
amazonapplebloomberg
Evaluate Divisionmedium-
adobeamazonbloomberg
Sequence Reconstructionmedium-
google
The Maze 3 - Shortest Instructions to Reach the Holehard-
google
The Maze 2 - Shortest Distancemedium-
amazonfacebookgoogle
Number of Provincesmedium-
adobeamazonatlassian
Design Excel Sum Formulahard-
amazonmicrosoft
Redundant Connectionmedium-
amazongoogle
Redundant Connection IIhard-
google
Network Delay Timemedium-
akuna-capitalamazongoogle
Cracking the Safehard-
google
Couples Holding Handshard-
amazongooglespotify
Is Graph Bipartitemedium-
amazondropboxebay
Cheapest Flights Within K Stops Problemmedium-
airbnbamazonbloomberg
All Paths from Source to Targetmedium-
amazonbloomberg
Find Eventual Safe Statesmedium-
google
Sum of Distances in Treehard-
google
Keys and Roomsmedium-
amazongoogle
Shortest Path Visiting All Nodeshard-
amazongooglemeituan
Loud and Richmedium-
amazon
Reachable Nodes In Subdivided Graphhard-
Possible Bipartitionmedium-
applefacebookgoogle
Showing 1 to 50 of 169 results
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