public class Demo{ //产生10个1-20以内的随机数,要求不能重复 public static void main(String[] args){ //新建集合存放随机数 Set<Integer> set = new HashSet<>(); //通过循环将产生的随机数放入集合 while(true){ com = (int)(Math.random()*20); //随机数不重复就添加进集合 boolean b = set.contains(com); if(…
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sql 第 10条 到20条 select * from( select *,ROW_NUMBER () over (order by @@servername) as rownum from tb_Grade) a where rownum between 11 and 20 select top(10) * from tb_Grade where 学生编号 not in (select top (10) 学生编号 from tb_Grade) 总分前5名的是 select top (20-1…
这是 meelo 原创的 IEEEXtreme极限编程大赛题解 Xtreme 10.0 - Playing 20 Questions with an Unreliable Friend 题目来源 第10届IEEE极限编程大赛 https://www.hackerrank.com/contests/ieeextreme-challenges/challenges/playing-20-questions-with-an-unreliable-friend To celebrate the 10th…
