Swap Alternate

 

You have been given an array/list(ARR) of size N. You need to swap every pair of alternate elements in the array/list.

You don't need to print or return anything, just change in the input array itself.

Sample Input 1:

1
6
9 3 6 12 4 32

Sample Output 1 :

3 9 12 6 32 4

public class Solution {
    
    public static void swapAlternate(int arr[]) {
    	
        int n=arr.length;
        int t=0;
        for(int i=0;i<n-1;i+=2)
        {
			
		 t=arr[i];
                arr[i]=arr[i+1];
                arr[i+1]=t;
                    
            }
        }
    }