Reorder linked list.

Focus on understanding the structure and properties of a linked list, including how to traverse and manipulate it. Break down the problem into clear steps: first, identify how you will split the linked list into two halves, then how to reverse the second half, and finally how to merge the two halves back together in the required order. Be prepared to discuss time and space complexity of your approach, and consider edge cases such as lists with an odd number of nodes or very small lists. Demonstrating a clear algorithmic thought process and coding proficiency will be key.