题解 | 排序

import java.util.Scanner;

// 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 scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int []arr = new int[n];
        for (int i = 0; i < arr.length; i++) {
            arr[i] = scanner.nextInt();
        }
        int ascOrDes = scanner.nextInt();
        if (ascOrDes == 0) {
            ArrayUtils.getAsc(arr);
        } else {
            ArrayUtils.getDes(arr);
        }
    }
}
class  ArrayUtils {
    private ArrayUtils () {

    }
    public static void getAsc(int[]arr) {
        for (int i = 0; i < arr.length; i++) {
            for (int j = 0; j < arr.length - i - 1; j++) {
                if (arr[j] >= arr[j + 1]) {
                    int swap = arr[j];
                    arr[j] = arr[j + 1];
                    arr[j + 1] = swap;
                }
            }
        }
        for (int i = 0; i < arr.length; i++) {
            System.out.print(arr[i] + " ");
        }
    }
    public static void getDes(int[]arr) {
        for (int i = 0; i < arr.length; i++) {
            for (int j = 0; j < arr.length - i - 1; j++) {
                if (arr[j] <= arr[j + 1]) {
                    int swap = arr[j];
                    arr[j] = arr[j + 1];
                    arr[j + 1] = swap;
                }
            }
        }
        for (int i = 0; i < arr.length; i++) {
            System.out.print(arr[i] + " ");
        }
    }
}