Random用法随机获取数字

2024年2月4日发(作者：)

Random 用 法

1、 获取固定几个字母中任意一个 组成一个6位数字输出

public class RandomUI {

private static Random random = new Random();//随机产生对象的对象

private static String getRandomNumber(String range[],int

StringBuffer bs = new StringBuffer();//因为bs可以直接把内容拼起来

for(int i=0;i

rangLength,int length){

// t(rangLength)随机获取0-9之间的任何数字

// range[t(rangLength)]找到数组中对应的值

//比如 t(rangLength)=1，range[1]=B;

(f(range[t(rangLength)]));

}

}

}

public static void main(String[] args) {

// TODO Auto-generated method stub

String [] range = {"A","B","C","D","E","F","G","H","J","P"};

n("range="+domNumber(range,

10,5));//因为是静态方法 所以直接类名.方法名

return ng();//返回值

}

2、 获取数字与字母组合的随机数字

将

public static void main(String[] args) {

}

public static void main(String[] args) {

}

// TODO Auto-generated method stub

String [] range = {"A","B","C","D","E","F","2","3","4","7"};

n("range="+domNumber(range,

10,5));//因为是静态方法 所以直接类名.方法名

// TODO Auto-generated method stub

String [] range = {"A","B","C","D","E","F","G","H","J","P"};

n("range="+domNumber(range,

10,5));//因为是静态方法 所以直接类名.方法名

修改为

运行就可以了;

3、 直接获取0-9或10-99或..的方法

private static Random random = new Random();//随机产生对象的对象

int i=10;

int ii = t(i);

n(“ii=”+ii);

如果要打印100以内随机数字，只需修改i的值为100就可以了，后面依次类推;