Question

How to initialize unordered_set in C++

Answer 1

#include <iostream>
#include <unordered_set>
#include <iterator>
 
void print(std::unordered_set<int> const &us) {
    std::copy(us.begin(),
            us.end(),
            std::ostream_iterator<int>(std::cout, " "));
}
  
int main()
{
    std::unordered_set<int> us = { 1, 5, 2, 7, 4, 9, 12, 6, 3 };
     
    print(us);
  
    return 0;
}
  
 
 
 
 
/*
run:
  
3 6 9 4 7 2 5 12 1 
  
*/

 

70+ SQL courses for beginners and professionals