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How to quickly swap two arrays of the same size in C++?
In this tutorial, we will be discussing a program to understand how to quickly swap two arrays of same size in C++.
For this we will be using a quick method called std::swap() for swapping the elements of the two given arrays.
Example
#include <iostream>
#include <utility>
using namespace std;
int main (){
int a[] = {1, 2, 3, 4};
int b[] = {5, 6, 7, 8};
int n = sizeof(a)/sizeof(a[0]);
swap(a, b);
cout << "a[] = ";
for (int i=0; i<n; i++)
cout << a[i] << ", ";
cout << "\nb[] = ";
for (int i=0; i<n; i++)
cout << b[i] << ", ";
return 0;
}Output
a[] = 5, 6, 7, 8, b[] = 1, 2, 3, 4,
Updated on: 02-Mar-2020
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