All Problems

21 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
Design log Order recordseasy-
twitteramazon
Design Underground Systemmedium-
Double Stackseasy-
Efficient Conversion Between Imperial Distance Unitseasy-
jane-street
Design LRU Cachemedium-
adobealibabaamazon
Design Twitter (Data Structure Design)medium-
amazondoordashoracle
Insert Delete Search and GetRandom in Constant Time 1 - Dupes not allowedmedium-
adobeaffirmamazon
Insert Delete Search and GetRandom in Constant Time 2 - Duplicates allowedhard-
affirmamazonapple
Shuffle an Arraymedium-
amazonapplebloomberg
LFU Cachehard-
adobealibabaamazon
Random Pick with Weightmedium-
amazonappleatlassian
Design Circular Dequemedium
facebook
Design Search Autocomplete Systemhard-
amazonapplebloomberg
Design Hashseteasy-
amazongoogle
Design HashMapeasy-
adobeamazonapple
Maximum Frequency Stackhard-
amazonapplebloomberg
Time Based Key-Value Storemedium-
amazonappleatlassian
Iterator for Combinationmedium-
google
Design a Stack With Increment Operationmedium-
microsoft
Seat Reservation Managermedium-
Detect Squaresmedium-