docs: protected int countTies(double[] withinDistances, int[] withinTies) {
      int wties = 0, running = 1;
      for(int i = 1; i <= withinDistances.length; ++i) {
        if(i == withinDistances.length || withinDistances[i - 1] != withinDistances[i]) {
          for(int j = i - running; j < i; j++) {
            withinTies[j] = running;
          }
          wties += running - 1;
          running = 1;
        }
        else {
          running++;
        }
      }
      return wties;
    }