Java 代码

import java.util.Scanner;

public class Main
{
    public static void reverse(int[] nums, int size)
    {
        int[] t = new int[size];

        for (int i = 0; i < size; i ++)
            t[i] = nums[size -1 - i];

        for (int j = 0; j < size; j ++)
            nums[j] = t[j];

    }

    public static void main(String[] args)
    {
        Scanner cin = new Scanner(System.in);

        int n = cin.nextInt();
        int size = cin.nextInt();

        int[] nums = new int[n];

        for (int i = 0; i < n; i ++)
            nums[i] = cin.nextInt();

        reverse(nums, size);

        for (int j = 0; j < n; j ++)
            System.out.print(nums[j] + " ");
    }
}