1.方法:
package demo_0524;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Arrays;
public class demo {
public static void main(String[] args) {
BufferedReader br=new BufferReader(new InputStreamReader(System.in));
String message=null;
while((message=br.readLine())!=null) {
int n=Integer.parseInt(message);
String[] data=br.readLine().split(" ");
int m=Integer.parseInt(br.readLine());
int[] arr=new [n];
for (int i = 0; i < arr.length; i++) {
arr[i]=Integer.parseInt(data[i]);
}
StringBuffer sb=new StringBuffer();
if (m==0) {
Arrays.sort(arr);
}else {
Arrays.sort(arr);
for(int i=0;i<arr.length/2;i++) {
int a=arr[i];
arr[i]=arr[arr.length-1-i];
arr[arr.length-1-i];
}
}
for(int i=0;i<arr.length;i++) {
sb.append(arr[i]+" ");
}
System.out.println(sb.toString().trim());
}
}
}