(разн.) ← Предыдущая | Текущая версия (разн.) | Следующая → (разн.)
Create insert_iterator to element 2
#include <iostream>
#include <iterator>
#include <vector>
using namespace std;
int main()
{
vector<int> v;
vector<int>::iterator itr;
int i;
for(i=0; i<5; i++)
v.push_back(i);
itr = v.begin();
while(itr != v.end())
cout << *itr++ << endl;
itr = v.begin();
itr += 2; // point to element 2
// create insert_iterator to element 2
insert_iterator<vector<int> > i_itr(v, itr);
// insert rather than overwrite
*i_itr++ = 100;
*i_itr++ = 200;
cout << "Array after insertion: ";
itr = v.begin();
while(itr != v.end())
cout << *itr++ << " ";
return 0;
}Demonstrate insert_iterator
#include <iostream>
#include <iterator>
#include <vector>
using namespace std;
int main() {
vector<int> v;
vector<int>::iterator itr;
for(int i=0; i<5; i++)
v.push_back(i);
cout << "Original array: ";
itr = v.begin();
while(itr != v.end())
cout << *itr++ << " ";
cout << endl;
itr = v.begin();
itr += 2; // point to element 2
// create insert_iterator to element 2
insert_iterator<vector<int> > i_itr(v, itr);
// insert rather than overwrite
*i_itr++ = 100;
*i_itr++ = 200;
cout << "Array after insertion: ";
itr = v.begin();
while(itr != v.end())
cout << *itr++ << " ";
return 0;
}Original array: 0 1 2 3 4
Array after insertion: 0 1 100 200 2 3 4
insert iterator and remove_copy_if
#include <algorithm>
#include <functional>
#include <iterator>
#include <vector>
#include <iostream>
#include <set>
using namespace std;
int main(int argc, char** argv)
{
vector<int> vectorOne;
set<int> setOne;
vectorOne.push_back(1);
vectorOne.push_back(2);
vectorOne.push_back(3);
vectorOne.push_back(4);
insert_iterator<set<int> > inserter(setOne, setOne.begin());
remove_copy_if(vectorOne.begin(), vectorOne.end(), inserter,bind2nd(equal_to<int>(), 100));
copy(setOne.begin(), setOne.end(), ostream_iterator<int>(cout, " "));
cout << endl;
return (0);
}insert_iterator from vector: set the position
#include <iostream>
#include <iterator>
#include <vector>
using namespace std;
int main()
{
vector<int> v;
vector<int>::iterator itr;
int i;
for(i=0; i<5; i++)
v.push_back(i);
itr = v.begin();
while(itr != v.end())
cout << *itr++ << endl;
itr = v.begin();
itr += 2; // point to element 2
// create insert_iterator to element 2
insert_iterator<vector<int> > i_itr(v, itr);
// insert rather than overwrite
*i_itr++ = 100;
*i_itr++ = 200;
itr = v.begin();
while(itr != v.end())
cout << *itr++ << " ";
return 0;
}
