* @return the decimal format
*/
protected DecimalFormat format(int i0, int i1, int j, int digits,
boolean trailing) {
FlexibleDecimalFormat df = new FlexibleDecimalFormat(digits, trailing);
df.grouping( true );
for(int i = i0; i <= i1; i ++ )
df.update( A[i][j] );
return df;
}