bool checkLetter(const string& letter, const string& magazine) {
HashTable h;
//count char frequency of letter
for(int i = 0; i < letter.size(); i ++) {
string ch = letter.substr(i , 1);
int count = 0;
//try to access the ch key in dict
try {
count = h.at(ch);
}
catch(invalid_argument err) {
//if not in dict, insert ch into dict
h.insert(ch, 1);
continue;
}
// if get count
h.insert(ch, (count + 1));
}
cout << "The characters in the letter is:" << endl;
h.display();
cout << endl;
for(int j = 0; j < magazine.size(); j ++) {
string chM = magazine.substr(j, 1);
int num = 0;
try{
num = h.at(chM);
if((num - 1) > 0){
h.insert(chM, (num -1));
}
else
h.remove(chM);
}
catch(invalid_argument err) {
continue;
}
}
h.display();
cout << endl;
cout << h.size() << endl;
return h.size() == 0;
}
/**********************************************************************
* This is a testing program to show an example of a hash table with
***********************************************************************/
int main()
{
ifstream fin("assign11.in");
string word;
HashTable table;
while (fin >> word)
{
table.insert(word);
}
table.display();
return 0;
}