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swapElements.cpp
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swapElements.cpp
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/* Problem statement :The task is to swap every ith element of the array with (i+2)th element.
Probelm Link : https://practice.geeksforgeeks.org/problems/need-some-change
*/
#include <iostream>
using namespace std;
// Function prototype
void swapElements (int[], int);
void swapElements (int arr[], int sizeof_array)
{
int temp, i;
for (i = 0; i < (sizeof_array - 2); i++)
{
temp = arr[i];
arr[i] = arr[i + 2];
arr[i + 2] = temp;
}
}
int main ()
{
int sizeof_array;
cin >> sizeof_array;
int arr[sizeof_array];
for (int i = 0; i < sizeof_array; i++)
{
cin >> arr[i];
}
swapElements (arr, sizeof_array);
for (int i = 0; i < sizeof_array; i++)
{
cout << arr[i] << " ";
}
cout << endl;
return 0;
}