How to sort objects by their variables?

Question

Unity

I have an object and it has a variable

public int CountTest = 1;
// объекты хранятся в массиве
public PrefabTest[] ArrayPrefabTest;
// то есть доступ до переменной
ArrayPrefabTest[0].CountTest = 1;
ArrayPrefabTest[1].CountTest = 15;
ArrayPrefabTest[2].CountTest = 3;
ArrayPrefabTest[3].CountTest = 30;

over time, these variables take on different values ​​and when iterating over the array

for(int i = 0; i < ArrayPrefabTest.Length; ++i){
  if(ArrayPrefabTest[i].CountTest == ....

I need to do different things there, but that's what I need - I need them to be sorted out of order, but re-sorted by this variable (for example, in descending order), that is, so that I get the array in the following order

ArrayPrefabTest[3].CountTest = 30;
ArrayPrefabTest[1].CountTest = 15;
ArrayPrefabTest[2].CountTest = 3;
ArrayPrefabTest[0].CountTest = 1;

How to sort it like that, even if it is a separate temporary array, or a set of keys in the right order, such as 3,1,2,0...
Tell me how?

Answer 1

foreach (var pref in ArrayPrefabTest.OrderByDescending(x => x.CountTest)) { }