public class Demo08 {
public static void main(String[] args) {
//定义一个数组
int[] arr ={1,2,3,4,5};
for (int i = 0,j=arr.length-1; i < j; i++,j--) {
int temp=arr[i];
arr[i]=arr[j];
arr[j]=temp;
}
for (int i = 0; i < arr.length; i++) {
System.out.println(arr[i]);
}
}
}5 4 3 2 1
