└── README.md


/README.md:
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 1 | import java.util.*;
 2 | public class Main
 3 | {
 4 | 	public static void main(String[] args) {
 5 | 	    Scanner in = new Scanner(System.in);
 6 | 	    int n =in.nextInt();
 7 | 	    int [] arr = new int[n];
 8 | 	    int temp;
 9 | 	    int i;
10 | 	    for(i=0;i<n-1;i++){
11 | 	        arr[i]=in.nextInt();
12 | 	    }
13 | 	    for(i=0;i<=n;i+=2){
14 | 	        temp = arr[i];
15 | 	        arr[i] = arr[i+1];
16 | 	        arr[i+1] = temp;
17 | 	        }
18 | 	        for (i=0;i<=n;i++)
19 | 	        System.out.println(arr[i] +" ");
20 | 	}
21 | }
22 | 


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