数组排序（选择排序）

给一个数组a，对a进行从小到大的排序

import java.util.Arrays;

public class Demo3 {
    public static void main(String[] args) {
        int []a = {5,4,3,8,1};
        for (int i = 0; i <a.length-1 ; i++) {
            for (int j = i+1; j <a.length ; j++) {
                if(a[i]>a[j]){
                    int t = a[i];
                    a[i] = a[j];
                    a[j] = t;
                }
            }
        }
        System.out.println(Arrays.toString(a));
    }
}