code: private static void toAbsoluteFreeResources(TIntIntHashMap changes, int[] sortedMoments) {
          for (int i = 1; i < sortedMoments.length; i++) {
              int t = sortedMoments[i];
              int lastT = sortedMoments[i - 1];
              int lastFree = changes.get(lastT);
  
              changes.put(t, changes.get(t) + lastFree);
          }
      }
docs: Translation for a relatives resources changes to an absolute free resources.
  
  @param changes       the map that indicates the free CPU variation
  @param sortedMoments the different moments sorted in ascending order