code: void switchTwoRows(int rowIndex, int rowToIndex) {
          checkForInit();
          int cellData = mRowHeights[rowToIndex];
          mRowHeights[rowToIndex] = mRowHeights[rowIndex];
          mRowHeights[rowIndex] = cellData;
      }
docs: Switch 2 items in array with rows data
  
  @param rowIndex   from row index
  @param rowToIndex to row index