VIP31/JavaSE/day03/src/Test02.java

/**
 * ClassName: Test02
 *
 * @Author 爱扣钉-陈晨
 * @Create 2023/11/4 10:40
 * @Version 1.0
 */
public class Test02 {
    public static void main(String[] args) {
        //随机数
        double random = Math.random();
        //0-1 小数数字
        System.out.println(random);

        //0 - 100
        double v = random * 100;
        System.out.println(v);

        //转换
        int i = (int) v;

        System.out.println(i);

        // 50 - 100

        // 0-50  + 50 ;
        int i1 = (int) (Math.random() * 50) + 50; // 0-49
        System.out.println(i1);

        // a - b;
        // (int) (Math.random() * a - b) + a


    }
}