#include <string>
#include <algorithm>
#include <iterator>
#include <iostream.h>
// #include <iostream>
class GreaterThan {
public:
GreaterThan( int size = 6 ) : _size( size ){}
int size() { return _size; }
bool operator()(const string & s1) {
return s1.size() > 6;
}
private:
int _size;
};
template <class Type>
class PrintElem {
public:
void operator()( const Type &elem )
{
++_cnt;
if ( _cnt % 8 == 0 ) { cout << endl; }
cout << elem << " ";
}
private:
static int _cnt;
};
template < class Type >
int PrintElem<Type>::_cnt = 0;
class LessThan {
public:
bool operator()(const string & s1, const string & s2 ) {
return s1.size() < s2.size();
}
};
typedef vector<string, allocator> textwords;
void process_vocab( vector<textwords, allocator> *pvec )
{
if ( ! pvec )
// issue warning message
return;
vector< string, allocator > texts;
vector<textwords, allocator>::iterator iter = pvec->begin();
for ( ; iter != pvec->end(); ++iter )
copy( (*iter).begin(), (*iter).end(), back_inserter( texts ));
// sort the elements of texts
sort( texts.begin(), texts.end() );
for_each( texts.begin(), texts.end(), PrintElem<string>() );
cout << endl << endl;
// delete all duplicate elements
vector<string, allocator>::iterator it;
it = unique( texts.begin(), texts.end() );
texts.erase( it, texts.end() );
for_each( texts.begin(), texts.end(), PrintElem<string>() );
cout << endl << endl;
stable_sort( texts.begin(), texts.end(), LessThan() );
for_each( texts.begin(), texts.end(), PrintElem<string>() );
cout << endl << endl;
// count number of strings greater than length 6
int cnt = 0;
// obsolete form of count -- standard changes this
count_if( texts.begin(), texts.end(), GreaterThan(), cnt );
cout << "Number of words greater than length six are "
<< cnt << endl;
//
static string rw[] = { "and", "if", "or", "but", "the" };
vector<string,allocator> remove_words( rw, rw+5 );
vector<string, allocator>::iterator it2 = remove_words.begin();
for ( ; it2 != remove_words.end(); ++it2 ) {
int cnt = 0;
// obsolete form of count -- standard changes this
count( texts.begin(), texts.end(), *it2, cnt );
cout << cnt << " instances removed: "
<< (*it2) << endl;
texts.erase(
remove(texts.begin(),texts.end(),*it2),
texts.end()
);
}
cout << endl << endl;
for_each( texts.begin(), texts.end(), PrintElem<string>() );
}
typedef vector<string,allocator>::difference_type diff_type;
#include <fstream.h>
main()
{
vector<textwords, allocator> sample;
vector<string,allocator> t1, t2;
string t1fn, t2fn;
cout << "text file #1: "; cin >> t1fn;
cout << "text file #2: "; cin >> t2fn;
ifstream infile1( t1fn.c_str());
ifstream infile2( t2fn.c_str());
istream_iterator< string, diff_type > input_set1( infile1 ), eos;
istream_iterator< string, diff_type > input_set2( infile2 );
copy( input_set1, eos, back_inserter( t1 ));
copy( input_set2, eos, back_inserter( t2 ));
sample.push_back( t1 ); sample.push_back( t2 );
process_vocab( &sample );
}
]]>