public class Main {
public static void main(String[] args) {
int []arr = {1,2,3,4,5};
for (int i = 0 , int 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]);
}
}
}
哪里有问题?看了半天没看出来