2、Arrays类排序数组

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需求说明：正确使用Arrays的sort()方法为数组进行排序，效果如下图所示。降序排列的写法可以参考for(int i=scores.length-1;i>=0;i–){}
这里写图片描述

package homework;import java.lang.reflect.Array;import java.util.Arrays;import java.util.Scanner;public class 作业2Arrays类排序数组 {    public static void main(String[] args) {        // TODO Auto-generated method stub        System.out.println("请输入5名学员的成绩：");        Scanner scanner=new Scanner(System.in);        int xxx[]=new int[5];        for (int i = 0; i < xxx.length; i++) {            int scores = scanner.nextInt();            xxx[i]=scores;        }           Arrays.sort(xxx);        System.out.println("学员成绩按升序排列：");        for (int i = 0; i < xxx.length; i++) {            System.out.print(xxx[i]+"\t");        }        System.out.println();        System.out.println("学员成绩按降序排列：");        for (int i = xxx.length-1; i>=0; i--) {            System.out.print(xxx[i]+"\t");        }    }}

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