Do I need to implement the "Mark and Sweep" mechanism myself, or is it already in the garbage collector?

Question

C++ / C#

Let's say we have code:

class Program
{
 public static void Main()
 {
   Element el1 = new Element();
   Element el2 = new Element(){OtherElement = el1};
   el1.OtherElement = el2;
 }
}
class Element
{
 public Element OtherElement {get; set;}
}

Here we need the "Mark and Sweep" mechanism to remove el1 and el2. But I don't know if it's already in the garbage collector or if I need to implement it myself. Why did this question even come up? The garbage collector works on the basis of links: there is a link to the object - we do not touch the object, no - we free the memory. But is the garbage collector adapted to circular references, or do you have to write your own "Mark and Sweep" mechanism?

Answer 1

No need to write anything yourself, everything is already there from the box.