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#include <iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <iterator>
using namespace std;
size_t fstNonEmpty(vector<string> const &vs)
{
return
find_if(vs.begin(), vs.end(),
[&](string const &str)
{
return str != "";
}
) - vs.begin();
}
int main()
{
vector<string> vs;
copy(istream_iterator<string>(cin), istream_iterator<string>(),
back_inserter(vs));
cout << "vs contains " << vs.size() << " words\n"
"first non-empty word at index " << fstNonEmpty(vs) << "\n"
"moving the first half into vector v2\n";
vector<string> v2{ make_move_iterator(vs.begin()),
make_move_iterator(vs.begin() + vs.size() / 2) };
cout << "vs contains " << vs.size() << " words\n"
"first non-empty word at index " << fstNonEmpty(vs) << "\n"
"v2 contains " << v2.size() << " words\n";
}
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