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16 problems total

Array (1906)Sorting (442)Depth First Search (316)Database (301)Breadth First Search (241)Tree (241)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(3945)

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Title	Difficulty	Videos	Companies
Add Two Numbers represented as Linked List in Reversed Order	medium	-	adobe aetion airbnb
Merge Two Sorted Linked Lists	easy		adobe airbnb alibaba
Merge K Sorted Lists	hard		adobe airbnb alibaba
Swap Nodes in Pairs	medium	-	adobe amazon apple
K Reverse a linked list	hard	-	adobe amazon apple
Remove duplicates from Sorted List 1	easy		adobe amazon apple
Copy List with Random Pointer	medium	-	adobe amazon apple
Linked List Cycle 1 - Detect Cycle	easy		adobe amazon apple
Linked List Cycle 2 - Find Start of a Cycle	medium	-	adobe amazon apple
Reorder List such that i-th element points to n-i-th element	medium		adobe amazon apple
Design LRU Cache	medium	-	adobe alibaba amazon
Intersection of Two Linked Lists	easy	-	airbnb alibaba amazon
Reverse Linked List	easy		adobe alibaba amazon
Odd Even Linked List - Bring odd nodes first and even later	medium	-	amazon bloomberg capital-one
Add Two Numbers represented as Linked List in Forward order	medium	-	amazon apple bloomberg
Design Skiplist	hard	-	ebay google microsoft