switch(style)
{
case ARABIC:
return _arabic[num - 1];
case UPPER_ROMAN:
return _roman[num-1].toUpperCase();
case LOWER_ROMAN:
return _roman[num-1];
case UPPER_LETTER:
return _letter[num-1].toUpperCase();
case LOWER_LETTER:
return _letter[num-1];
case ORDINAL:
return _arabic[num - 1];
default:
return _arabic[num - 1];
}