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// swap lists
#include <iostream>
#include <list>
int main ()
{
std::list<int> first (3,100); // three ints with a value of 100
std::list<int> second (5,200); // five ints with a value of 200
first.swap(second);
std::cout << "first contains:";
for (std::list<int>::iterator it=first.begin(); it!=first.end(); it++)
std::cout << ' ' << *it;
std::cout << '\n';
std::cout << "second contains:";
for (std::list<int>::iterator it=second.begin(); it!=second.end(); it++)
std::cout << ' ' << *it;
std::cout << '\n';
return 0;
}
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