Question

How to initialize unordered_set with vector values in C++

Answer 1

#include <iostream>
#include <vector>
#include <unordered_set>
 
void print(std::unordered_set<int> const &us) {
    for (auto const &n: us) {
        std::cout << n << " ";
    }
}
   
int main()
{
    std::vector<int> v = { 1, 5, 2, 7, 4, 9, 12 };
    
    std::unordered_set<int> us(v.begin(), v.end());
      
    print(us);
}
   
  
  
  
  
/*
run:
   
4 7 9 2 12 5 1 
   
*/

 

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