swap_vector_30-Seconds-of-C++, C++ (gcc)

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// Follow the Style Guide while submitting code PR.
// Style Guide => https://github.com/Bhupesh-V/30-Seconds-Of-STL/blob/master/CONTRIBUTING.md/#Style Guide
/*
    Author : Pankaj Raghav
    Date : 28/05/2019
    Time : 23:15
    Description : std::vector::swap from STL is used to swap the contents of two vectors
*/

#include <iostream>
#include <vector>
#include<string>

void print(const std::string &vector_name, const std::vector<int> &vec){
	//Function to print the vector name and the vector 
    std::cout << vector_name << "{ ";

for (auto num : vec){
        std::cout << num << " ";
    }

std::cout << "}" << std::endl;
}

void swap_vectors(std::vector<int> &vec1, std::vector<int> &vec2){
	//Function to swap the vectors 
	vec1.swap(vec2); // Can also be vec2.swap(vec1) 
}

int main (){	
 	//Intializing the vectors  
 	std::vector<int> vector1 = {1,2,3};
	std::vector<int> vector2 = {4,5,6,6};

print("Vector 1 : ",vector1);
	print("Vector 2 : ",vector2);

std::cout << "Performing swap using STL vector swap function" << std::endl;

swap_vectors(vector1,vector2);

print("Vector 1 : ", vector1);
	print("Vector 2 : ", vector2);

return 0;
}

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Compilation time: 0.43 sec, absolute running time: 0.07 sec, cpu time: 0.01 sec, memory peak: 3 Mb, absolute service time: 0,5 sec