https://rosettacode.org/wiki/Cycle_detection https://rosettacode.org/wiki/Cycle_detection Cycle detection in (currently) 44 languages. Most (all?) use Brent's

https://rosettacode.org/wiki/Cycle_detection https://rosettacode.org/wiki/Cycle_detection Cycle detection in (currently) 44 languages. Most (all?) use Brent's algorithm. They're operating on an iterated function but converting most of these to detect cycles in a linked list would be straightforward.