> Any examples using the `lists` module?
Originally I used `SinglyLinkedRing`, but then I manually manipulated some of
the nodes inside of it.
It looked like this (SPOILERS!!!):
curr.next = pickedUp[^1].next
pickedUp[^1].next = wanted.next
wanted.next = pickedUp[0]
circle.head = curr.next
Run
In the end, I re-implemented the whole thing to just use a sequence of
"pointers" to the next element. 10x less execution time and 10x less memory
usage. [Full
code](https://github.com/narimiran/AdventOfCode2020/blob/master/nim/day23.nim).
