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

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TitleDifficultyVideosCompanies
Merge K Sorted Listshard
adobeairbnbalibaba
Valid Sudokumedium-
adobeamazonapple
Wildcard Matchinghard-
adobeamazonbloomberg
Merge Overlapping Intervalsmedium
adobealibabaamazon
Unique Paths in Grid 2 - Count all paths moving right or down with obstaclesmedium-
amazonapplebloomberg
Word Search 1 - Find if word existsmedium
adobeamazonapple
Design LRU Cachemedium-
adobealibabaamazon
Number of Islandsmedium
adobeaffirmalibaba
Zigzag Iteratormedium-
amazonapplecruise-automation
Range Sum Query 2D - Immutablemedium-
amazonapplecruise-automation
Decode Stringmedium-
alibabaamazonappdynamics
Minesweepermedium-
amazonbloombergcruise-automation
Max Area of Islandmedium-
adobeaffirmamazon
Interval List Intersectionsmedium-
amazonapplebloomberg
Synonymous Sentencesmedium-
cruise-automation
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