集合框架练习2

package shenrulijie;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Random;


public class Test {

    public static void main(String[] args) {

List<Integer> list=new ArrayList<Integer>();
for(int i=1;i<11;i++){
    list.add(i);
}
Collections.shuffle(list);
for(int a:list){
    System.out.println(a);
}

Collections.sort(list);
    for(int j:list){
        System.out.println(j);
    }
Collections.reverse(list);
    for (int k:list) {
        System.out.println(k);
    }
}
    }