Question :
Sample input 1 :
Element:
4
5
6
7
4-6+5-7
Sample output 1 :
4
Sample input 2 :
Element:
9
13
14
15
9-14+13-15
Sample output 2 :
7
Code :
package sda; import java.util.*; public class AlterNateSumDiff { public static void main(String[] args) { Scanner sc=new Scanner(System.in); int no=sc.nextInt(); int arr[]=new int[no]; int diff=0,sum=0; for(int i=0;i<no;i++) { arr[i]=sc.nextInt(); } for(int i=0;i<no/2;i++) { diff=arr[i]-arr[no-i-1]; sum+=diff; } System.out.println(sum); } }
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