/guava/android/guava/src/com/google/common/collect/DenseImmutableTable.java
values[rowIndex][columnIndex] = cell.getValue ( ) ;
R rowKey = cell.getRowKey(); C columnKey = cell.getColumnKey(); int rowIndex = requireNonNull(rowKeyToIndex.get(rowKey)); int columnIndex = requireNonNull(columnKeyToIndex.get(columnKey)); V existingValue = values[rowIndex][columnIndex]; checkNoDuplicate(rowKey, columnKey, existingValue, cell.getValue()); <extra_id_0> rowCounts[rowIndex]++; columnCounts[columnIndex]++; cellRowIndices[i] = rowIndex; cellColumnIndices[i] = columnIndex; } this.cellRowIndices = cellRowIndices;