随机数的小案例:获取任意范围内的随机数
public class Demo1 { public static void main(String[] args) { // 1.键盘录入数据 Scanner sc = new Scanner(System.in); System.out.println("请输入开始数:"); int start = sc.nextInt(); System.out.println("请输入结束数:"); int end = sc.nextInt(); for (int i = 0; i < 10; i++) { int random = getRandom(start, end); System.out.println(random); } } public static int getRandom(int start, int end) { int num = (int) (Math.random() * (end - start + 1) + start); return num; } }运行结果如下: 请输入开始数:
900
请输入结束数:
1000
906
969
913
927
952
931
938
944
912
912