package cn.kgc.springtest2.demo1.dao;

import java.util.BitSet;

/**

 * @author

 * @create 2019-08-02 17:46

 **/

public class sss {

    public static void main(String[] args) {

        BitSet bs = new BitSet(100);

        for (int count = 0; count < 99;) {

            int random = (int) (Math.random() * 100);

            if (!bs.get(random)) {

                bs.set(random);

                count++;

            }

        }

        //输出没有被取出的数字

        System.out.println(bs.nextClearBit(0));

        System.out.println();

        for (int i = bs.nextSetBit(0); i >= 0; i = bs.nextSetBit(i + 1)) {

            //输出不重复的随机数

            System.out.print(i + " ");

        }

    }

}