Question

How to swap two arrays in C++

Answer 1

#include <bits/stdc++.h> 
   
int main() { 
    std::valarray<double> varr1 = { 2, 3, 5, 4, 7 }; 
    std::valarray<double> varr2 = { 10, 54, 12, 32, 99 }; 
 
    varr1.swap(varr2); 
   
    for (double &n : varr1) { 
        std::cout << n << ", ";
    } 
    
    std::cout << "\n";
    
    for (double &n : varr2) { 
        std::cout << n << ", ";
    } 
}
   
    
    
    
/*
run:
    
10, 54, 12, 32, 99, 
2, 3, 5, 4, 7, 
    
*/

 

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