code: void switchTwoColumns(int columnIndex, int columnToIndex) {
          checkForInit();
          int cellData = mColumnWidths[columnToIndex];
          mColumnWidths[columnToIndex] = mColumnWidths[columnIndex];
          mColumnWidths[columnIndex] = cellData;
      }
docs: Switch 2 items in array with columns data
  
  @param columnIndex   from column index
  @param columnToIndex to column index