how to control if two vectors have the same values

[sandodog]

Hi everybody's here,
i need to write a function to control if two vectors have the same values and the same count for each value.

Any hint for me?
Thanks for all

[TheDestroyer]

How about you elaborate more on the word "control"?

If you want to check whether 2 vectors are equal, just use the == operator:

#include <vector>
#include <iostream>

using namespace std;

int main()
{
   vector<double> v1,v2;
   
   v1.push_back(5);
   v1.push_back(8);
   v2.push_back(5);
   v2.push_back(8);
   
   if(v1 == v2)
      cout<<"Vectors are equal"<<endl;
}

[sandodog]

Thanks, but does operator == work if elements in the two vectors are not in the same order?

[TheDestroyer]

They have to be exactly the same for the == to return true; i.e., size, order, values.

[sandodog]

It's my problem, I need that returns true also if the elements are not in order

[Peter87]

If you don't care about the order you can sort the two vectors before comparing them.

#include <vector>
#include <iostream>
#include <algorithm>

using namespace std;

int main()
{
   vector<double> v1,v2;
   
   v1.push_back(5);
   v1.push_back(8);
   v2.push_back(5);
   v2.push_back(8);
   
   std::sort(v1.begin(), v1.end());
   std::sort(v2.begin(), v2.end());
   
   if(v1 == v2)
      cout<<"Vectors are equal"<<endl;
}