Challenge: Reverse Linked List

Try to solve the Reverse Linked List problem.

We'll cover the following


Given the head of a singly linked list, reverse the linked list and return its updated head.


Let n be the number of nodes in a linked list.

  • 11 \leq n 5×102\leq 5\times10^2
  • 5×103-5\times10^3 \leq Node.value 5×103\leq 5\times10^3


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