java 实现猜数字游戏 随机给定一个数字，猜大小直到正确

package com.swift;
import java.util.Random;
import java.util.Scanner;
public class GuessBigSmall {
public static void main(String[] args) {
Scanner scan=new Scanner(System.in);
Random random = new Random();
int number = random.nextInt(1000) + 1;
for (;;) {
System.out.println("请输入猜的——正整数——数字：");
int guessNumber=scan.nextInt();
if (guessNumber>number) {
System.out.println("猜大了。");
continue;
} else if (guessNumber<number) {
System.out.println("猜小了。");
continue;
} else {
System.out.println("恭喜，猜对了。");
break;
}
}
}
}

另一种生成随机数方法

package com.swift;
import java.util.Scanner;
public class GuessBigSmall2 {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
int number = (int) (Math.random() * 1000 + 1);
for (;;) {
System.out.println("请输入猜的——正整数——数字：");
int guessNumber = scan.nextInt();
if (guessNumber > number) {
System.out.println("猜大了。");
continue;
} else if (guessNumber < number) {
System.out.println("猜小了。");
continue;
} else {
System.out.println("恭喜，猜对了。");
break;
}
}
}
}