练习一下，写个“排雷”小游戏

/*
排雷
1.产生随机一个数（0~100]；
2.根据提示键盘输入一个数去猜这个数；
3.直到猜中。
*/

import java.util.Random;
import java.util.Scanner;

public class RandomGame {
public static void main(String[] args) {
    Random r = new Random();
    int lei = r.nextInt(100) + 1;


 System.out.println("请输入（0~100]之间的数：");//开始排雷（猜数）
    Scanner sc = new Scanner(System.in);
    int guessNum = sc.nextInt();

    int a = 0;
    int b = 100;

    while (true) {

        if (guessNum > lei) {
            System.out.println("请输入(" + a + "~" + guessNum + ")之间的数");
            b = guessNum;
            int guessAgain = sc.nextInt();
            guessNum = guessAgain;

        } else if (guessNum < lei) {
            System.out.println("请输入(" + guessNum + "~" + b + ")之间的数");
            a = guessNum;
            int guessAgain = sc.nextInt();
            guessNum = guessAgain;


        } else {
            System.out.println("排雷成功！");
            break;
        }
    }
    System.out.println("游戏结束！");


  }
}