[SWEA] 1545번 거꾸로 출력해 보아요

import java.util.Arrays;
import java.util.Collections;
import java.util.Scanner;

class Solution
{
	public static void main(String args[]) throws Exception
	{
    	Scanner kb = new Scanner(System.in);
    	
    	int num = kb.nextInt();
    	
    	Integer[] arr = new Integer[num+1];
    	
    	for(int i=0; i< arr.length; i++) {
    		arr[i] = i;
    	}
    	
    	Arrays.sort(arr, Collections.reverseOrder());
    	
    	for(int x: arr) {
    		System.out.print(x+ " ");
    	}

	}
}