from = low;
        }
      }
    }
  }

  private static void swap(double[] array, int i, int j) {
    // This is a copy of com.google.math.Rank#swap.
    double temp = array[i];
    array[i] = array[j];
    array[j] = temp;
  }

      array[i++] = element;
    }
    return array;
  }

  /** Swaps {@code array[i]} with {@code array[j]}. */
  static void swap(Object[] array, int i, int j) {
    Object temp = array[i];
    array[i] = array[j];
    array[j] = temp;
  }

  @CanIgnoreReturnValue
  static Object[] checkElementsNotNull(Object... array) {
    return checkElementsNotNull(array, array.length);
  }

  @CanIgnoreReturnValue

  /** Java class path. */
  JAVA_CLASS_PATH("java.class.path"),

  /** List of paths to search when loading libraries. */
  JAVA_LIBRARY_PATH("java.library.path"),

  /** Default temp file path. */
  JAVA_IO_TMPDIR("java.io.tmpdir"),

  /** Name of JIT compiler to use. */
  JAVA_COMPILER("java.compiler"),

  /**
   * Path of extension directory or directories.
   *