采用Random技术在网页中产生一个随机整数，可以将该技术用户网站的验证码的实现。-Random technology used in Web pages generate a random integer, the technology users can verify the site code implementation.

import java.util.* public class sanmen { public static void main(String[] args) { System.out.println("1:Keep the box you chose initially and open it .") System.out.println("2:Take the remaining box ,which the game show host did not o

猜数问题，实现了rand（）函数的随机，随着你猜的次数，他会做一个统计(The guessing problem implements the randomness of the rand () function and, as you guess, he makes a statistic)