docs: public static double selectExcludingZeros(final double[] arr, final int nonZeros, final int pivot) {
      if (pivot > nonZeros) {
        return 0L;
      }
      final int arrSize = arr.length;
      final int zeros = arrSize - nonZeros;
      final int adjK = (pivot + zeros) - 1;
      return select(arr, 0, arrSize - 1, adjK);
    }