import java.util.Scanner; import java.util.Arrays; // 注意类名必须为 Main, 不要有任何 package xxx 信息 public class Main { public static void main(String[] args) { Scanner scan = new Scanner(System.in); int num = scan.nextInt(); int [] array = new int[num]; for(int i = 0;i < num; i++){ int x = scan.nextInt(); ...