Set练习

Set分为HashSet和TreeSet

import java.util.*;
public class SetTest {
    public static void main(String[] args){
        Random rand=new Random(35);
        Set<Integer> set = new HashSet<>();
        for(int i=0;i<10000;i++){
            set.add(rand.nextInt(50));
        }
        System.out.println(set);
    }
}