本帖最后由 QingYi. 于 2021-3-25 22:27 编辑
编写一个简单程序模拟掷骰游戏，掷骰子一次可能随机得到1,2,3,4,5,6,中的任意一个数，一个人可以掷骰子两次，求平均值；输出结果如下：
The first die comes up 4
The second die comes up 1
Your total roll is 5
The average roll is 2
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Code:
[Java] 纯文本查看 复制代码
import java.util.Random;
public class Four {
public static void main(String[] args) {
int a = new Random().nextInt(6) + 1;
int b = new Random().nextInt(6) + 1;
System.out.println("The first die comes up " + a);
System.out.println("The second die comes up " + b);
int n = a + b;
System.out.println("Your total roll is " + n);
System.out.println("The average roll is " + n / 2);
}
}
编写掷一对骰子的游戏，计算出现两个骰子的值都是1时，至少要多少次，打印出次数
[Java] 纯文本查看 复制代码
import java.util.Random;
public class Five {
public static void main(String[] args) {
int r = 0;
int a = 0;
int cnt = 0;
while (a != 1 && r != 1) {
r = new Random().nextInt(6) + 1;
a = new Random().nextInt(6) + 1;
cnt++;
}
System.out.println(cnt);
}
}
编写程序实现从键盘输入年份与月份，由程序判断该年的那个月有多少天，输出结果如下：
Input year : 2004
Input month : 8
August , 2004 has 31 days
-------------------------------
Code：
[Java] 纯文本查看 复制代码
public class Six {
public static void main(String[] args) {
String[] month = {"January", "February", "March", "April", "May", "June"
, "July", "August", "September", "October", "November", "December"
};
boolean[] days = new boolean[13];
days[1] = days[3] = days[5] = days[7] = days[8] = days[10] = days[12] = true;
Scanner sc = new Scanner(System.in);
int y = sc.nextInt();
int m = sc.nextInt();
System.out.println("Input year : " + y);
System.out.println("Input month : " + m);
int day;
if (m == 2) {
day = f(y) ? 29 : 28;
} else {
day = days[m] ? 31 : 30;
}
System.out.println(month[m - 1] + " , " + y + " has " + day + " days");
}
private static boolean f(int x) {
return ((x % 4 == 0 && x % 100 != 0) || (x % 400 == 0));
}
}
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发表于 2021-3-25 22:26
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发表于 2021-3-25 22:35
