java - 如何随机生成 1 到 50 之间的整数 (java)

Question

这个问题已经有答案了:

How do I generate random integers within a specific range in Java? (73 个回​​答)

已关闭 8 年前。

这是完整的代码，我如何在此创建随机数，以便 numberneedingtobeguessed是随机生成的。

public class Guessing {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        @SuppressWarnings("resource")
        Scanner input = new Scanner(System.in);
        int number;
        int numberneedingtobeguessed = 26;
        int done = 1;

        System.out.println("I am thinking of a number in between 1 and 50 what is it?");
        while (done < 2) {
            number = input.nextInt();

            if (number < numberneedingtobeguessed) {
                System.out.println("Too low");
            }
            else if (number > numberneedingtobeguessed) {
                System.out.println("Too high");
            }
            else if (number == numberneedingtobeguessed) {
                System.out.println("You guessed correctly");
                done = done + 1;
            }
        }
    }
}

Answer 1

import java.util.Random;

.........

Random ran = new Random();
int r = ran.nextInt(50) + 1;

这将生成一个 0 ... 49 之间的随机数，然后在末尾添加 1。