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138. Copy List with Random Pointer

138. Copy List with Random Pointer

A linked list of length n is given such that each node contains an additional random pointer, which could point to any node in the list, or null.Construct a deep copy of the list.

LinkedList - 876. Middle of the Linked List

LinkedList - 876. Middle of the Linked List

Given a non-empty, singly linked list with head node head, return a middle node of linked list.

LinkedList - 206. Reverse Linked List

LinkedList - 206. Reverse Linked List

Reverse a singly linked list.

Nothing just happens, it's all part of a plan.