Java逆向猜测游戏

Question

I've been trying to create a reverse guessing game wherein the user will input a number and then the program/bot will try to guess what number the user gave. I have a problem with random generator in the program. For example, when the user inputs a number such as 157, the bot will generate a number. If the number that bot gave is lower than 157, the user will then click the higher button (lower button if the number is higher). My problem is it doesn't generate properly and just give a random number.

I've tried changing the formula for Math.random() but I still can't figure it out.

Here's my code for the jbutton (higher) in netbeans :

if(con > con2) {
    int generator = (int)(Math.random() * (1 + high - low))+low;
    String conv = Integer.toString(generator);
    jTextField2.setText(conv);
}

Answer 1

Your problem very likely does not lie in your random number generation. When I run the following:

int high = 20;
int low = 10;
for(int i = 0; i < 20; ++i)
{
    int generator = (int)(Math.random() * (1 + high - low))+low;
    System.out.print(generator+" ");
}

I get the following output:

18 19 12 11 19 17 15 19 14 16 16 14 10 20 13 20 11 14 20 15

This generates random numbers between 10 and 20, inclusive. So, if you're running into a problem with your random number generation, there are a few possibilities:

Your jTextField2.setText value is getting ignored

Your jTextField2.setText value is getting overridden

Your values low and high are not what you think they are

Your values low and high are being changed at the same time/before your if statement runs

The condition (con > con2) for your if statement is never satisfied, so the if is never invoked in the first place

The best way to resolve this problem is for you to debug the remaining parts of your program, because the random number generation is clearly functional.