lookup table

[georgie]

what do you think is an efficient way of implementing a lookup table in c++

i'd use a vector or some other safe container, except calling push_back 400 times seems ridiculous.....

and i've currently got it as a cstyle array, but that is giving me weirrrrrrrrd results....

class LookupTable: public QWidget
{
 public:
  LookupTable();
  int lookupElectrodeNumber(int i);
 private:
  int base_filter[21][13];
  int id_filter[13][21]; 
  int number_to_filter [100];
};
#endif//LOOKUP_TABLE_

class LookupTable: public QWidget
{
 public:
  LookupTable();
  int lookupElectrodeNumber(int i);
 private:
  int base_filter[21][13];
  int id_filter[13][21]; 
  int number_to_filter [100];
};
#endif//LOOKUP_TABLE_

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LookupTable::LookupTable()
{
 
  int::number_to_filter[] = { blah blah blah....a heck of a lot of numbers};
 
}
 
int LookupTable::lookupElectrodeNumber(int i)
{
  return number_to_filter[i];
}

LookupTable::LookupTable()
{
  
  int::number_to_filter[] = { blah blah blah....a heck of a lot of numbers};
      
}

int LookupTable::lookupElectrodeNumber(int i)
{
  return number_to_filter[i];
}

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seems simple....but gives wacky stuff....