code: public void shuffleRowValues(ArrayList<String> rows) throws Exception {
  		doubleValues.clear();
  		ArrayList<String> columns = this.getColumns();
  		for (String row : rows) {
  			ArrayList<Integer> columnIndex = new ArrayList<Integer>();
  			for (int i = 0; i < columns.size(); i++) {
  				columnIndex.add(i);
  			}
  			Collections.shuffle(columnIndex);
  
  			for (int i = 0; i < columns.size(); i++) {
  				String column = columns.get(i);
  				int randomIndex = columnIndex.get(i);
  				String destinationCol = columns.get(randomIndex);
  
  				String temp = this.getCell(row, destinationCol);
  				String value = this.getCell(row, column);
  				this.addCell(row, destinationCol, value);
  				this.addCell(row, column, temp);
  			}
  		}
  
  	}
docs: Need to shuffle rows values to allow for randomized testing. The rows in
  the list will be shuffled together
  
  @param rows
  @throws Exception