c++ check intersection of two vectors code example
Example: intersection between vector c++
#include <algorithm>
#include <iostream>
#include <string>
#include <vector>
std::vector<std::string> intersection(std::vector<std::string> &v1,
std::vector<std::string> &v2){
std::vector<std::string> v3;
std::sort(v1.begin(), v1.end());
std::sort(v2.begin(), v2.end());
std::set_intersection(v1.begin(),v1.end(),
v2.begin(),v2.end(),
back_inserter(v3));
return v3;
}
int main(){
std::vector<std::string> v1 {"a","b","c"};
std::vector<std::string> v2 {"b","c"};
auto v3 = intersection(v1, v2);
for(std::string n : v3)
std::cout << n << ' ';
}