Linked List

Reverse a singly linked list in-place using three pointers

Merge two sorted linked lists into one sorted list

Detect if a linked list has a cycle using constant space

Find the middle node of a linked list in a single pass

Remove the nth node from the end of a linked list in one pass

Add two numbers represented as linked lists with digits in reverse order

Reorder list L0->L1->...->Ln to L0->Ln->L1->Ln-1->...

Swap every two adjacent nodes by rewiring pointers (not just swapping values)

Deep copy a linked list where each node has a next and a random pointer

Reverse the nodes of a linked list k at a time and return the modified list

Merge k sorted linked lists into one sorted linked list using divide and conquer

Implement an LRU Cache with O(1) get and put using a doubly linked list and hash map