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// swap arrays
#include <iostream>
#include <array>
int main ()
{
std::array<int,5> first = {10, 20, 30, 40, 50};
std::array<int,5> second = {11, 22, 33, 44, 55};
first.swap (second);
std::cout << "first:";
for (int& x : first) std::cout << ' ' << x;
std::cout << '\n';
std::cout << "second:";
for (int& x : second) std::cout << ' ' << x;
std::cout << '\n';
return 0;
}
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