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65 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
Add Two Numbers represented as Linked Listmedium-
Binary Search on a linked listmedium-
Convert Heap ordered Linked List to Binary Treemedium-
Create linked lists of all the nodes at each depth for a Binary Treemedium-
Delete X Nodes After Y Nodesmedium-
Find Common Elements in Two Sorted Linked Listsmedium-
Find Nth Node From End Of Linked Listmedium-
Find the length of the linked listeasy-
Flatten a Multi-Level Linked List in Depth-first waymedium-
Flatten a Multi-Level Linked List level by levelmedium-
facebook
Flatten Binary Search Tree to Circular Doubly Linked Listmedium-
Floyd Cycle-Finding Algorithmmedium-
Get sqrt nth node in Linked Listmedium-
Implement circular linked listmedium-
Implement queue using linked listeasy-
Implement stack using linked listeasy-
K reverse a Linked List in alternating waymedium-
Add Two Numbers represented as Linked List in Reversed Ordermedium-
adobeaetionairbnb
Remove Nth Node From End of Listmedium
adobeamazonapple
Merge Two Sorted Linked Listseasy
adobeairbnbalibaba
Linked List Cycle 3 - Find length of cyclemedium-
Linked List Cycle 4 - Delete cyclemedium-
Merge a Linked list into another at Alternate Positionsmedium-
Merge K Sorted Listshard
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Merge Sort in a Linked listmedium-
Remove duplicates from an unsorted linked list keeping only one instanceeasy-
Reverse a Doubly Linked Listmedium-
Split Linked List at the middlemedium-
Split Linked List in alternating waymedium-
Split Linked List into two halves fractionally given nmedium-
Swap Nodes in Pairsmedium-
adobeamazonapple
K Reverse a linked listhard-
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Rotate Linked List to Rightmedium-
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Swap alternate nodes in a singly linked listmedium-
Swap Every Kth Node in a LinkedListmedium-
Transformations Between Binary Tree Structuctures and Linked Listsmedium-
Remove duplicates from Sorted List 2medium
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Remove duplicates from Sorted List 1easy
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Partition Listmedium-
amazonapplelinkedin
Reverse Linked List 2 - between m and nmedium-
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Copy List with Random Pointermedium-
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Linked List Cycle 1 - Detect Cycleeasy
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Linked List Cycle 2 - Find Start of a Cyclemedium-
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Reorder List such that i-th element points to n-i-th elementmedium
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Design LRU Cachemedium-
adobealibabaamazon
Insertion Sort on Listmedium-
bloomberggooglemicrosoft
Intersection of Two Linked Listseasy-
airbnbalibabaamazon
Remove Linked List Elementseasy-
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Reverse Linked Listeasy
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Palindrome Linked Listeasy-
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