Question

我对编程很陌生，我们的老师要求我们制作一个程序，可以猜出用户使用数组的数字。我这样做了：

import java.util.Scanner;

public class Exercise11 {

    public static void main(String[] args) {
        Scanner entrada = new Scanner(System.in);
        System.out.println("Think a number between 1 and 100");
        int array[] = new int[100];

        for (int x = 0; x < 100; x++) {
            array[x] = (int) ((Math.random() * 100) + 1);
        }
        //This allow us to fill the array with random numbers, without caring if they are repeated or not.
        for (int i = 0; i < 100; i++) {
            for (int j = 0; i < 100; j++) {
                while (true) {
                    if (i != j && array[i] == array[j]) {
                        array[j] = (int) ((Math.random() * 100) + 1);
                    } else
                        break;
                }
                //If a number is repeated, this will swap that number with another number.
            }
        }

        //Now we have filled the array. We ask the user:
        for (int y = 0; y < 100; y++) {
            System.out.println("¿Is it your number " + array[y] + "?");
            String respuesta = entrada.next();
            switch (respuesta) {
                case "Yes":
                    System.out.println("I knew it! I only needed " + y + " trys!");
                    break;
                case "No":
                    break;
            }
        }
    }
}

但是当我执行它时仍然会抛出错误，如下所示：

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 100
    at Ejercicio11.main(Ejercicio11.java:25).

我试过调试它，但我还在学习如何去做，我找不到错误。有人可以帮我确定错误的位置以及如何解决？非常感谢！

Answer 1

你的内部for循环的条件应该是

-(IBAction)sendBtnPressed:(UIButton*)sender
{
    if (sender.tag == 1)
    {
        NSLog(@"Touch on _btnManual");
    }
    else
    {
        NSLog(@"Touch on _btnSearch");
    }
}

（条件是 j <100 ，而不是 i＆lt; 100 ）

用java（数组）猜测用户想到的数字

1 个答案: