First_and_Last_pair.java

import java.util.*;
class Autobot{
	public static void main(String args[]){
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int[] arr = new int[n];
		for(int i = 0 ; i < n ; i++){
		    arr[i] = sc.nextInt();
		}
		int x = 0 , y = n - 1;
		while(x<y){
		    System.out.format("%d %d ",arr[x],arr[y]);
		    x++;
		    y--;
		}
		if(n%2==1){
		    System.out.format("%d 0",arr[x]);
		}
	}
}