public class Reverse {
public static void main(String[] args) {
int arr[]={1,2,3};
int start=0;
int end=arr.length;
int temp;
int start=arr[start];
int end=arr[arr.length];
while(start!=end){
start++;
end--;
temp=arr[s];
arr[start]=arr[end];
arr[end]=temp;
}
for(int a:arr){
System.out.println(a);
}
}
}