Loops. A recursive algorithm can be transformed into an iterative looping algorithm that uses a fixed stack of memory.
There's probably no change in the algorithms. They just use non-recursive versions.
There's probably no change in the algorithms. They just use non-recursive versions.
They probably don't use trees and quicksort at all.
> What's the gain?
If you can calculate the size of the stack at compile time, you don't need to manually manage it.