繁体   English   中英

查找数组中数字的位置并给出点,Java

[英]Finding positions of a number in an array and giving points, Java

我正在尝试编写一个程序,该程序在数组Data []中生成并存储20个随机数,并要求用户输入他们的猜测。 如果他们的数字出现在数组中,则每次出现都会得到10分,将打印该数组并找到所有幸运数字的位置。 如果它没有出现在数组中,我必须打印数组的最低和最高值,并且只能再尝试一次。 如果玩家第二次做对,他们每次出场都会获得1分。 例如: Data[]={3,1,8,31,25,6,3,20,41,12,3,23,7,3,65,49,5,0,13,17}和if用户输入3 ,程序将输出

3 can be found on the following positions:
0 6 10 13
3 appears 4 times. You get 40 points!

并且对于相同的Data[]={3,1,8,31,25,6,3,20,41,12,3,23,7,3,65,49,5,0,13,17}如果用户输入2 ,程序将输出

Sorry your lucky number 2 is not in the array! 
Hint: Lowest Value:1 Highest Value 65  Try again with a different number in this range.

如果他们在第二次尝试中输入65 ,则程序将输出

You get 1 point(s)!

这是我尝试过的代码,但是没有用。 它不断告诉我我的数字不在数组中。 最低和最高值起作用。 我不知道如何解决。 我必须在明天之前完成。 任何帮助将不胜感激。

String input1 = JOptionPane.showInputDialog("Please enter your lucky number between 0 and 100.");
luck=Integer.parseInt(input1);
System.out.println("Input " +luck);

int Data[] = new int [20];
for( int i=0; i<Data.length;++i){
    Data[i] = (int) (Math.random() * 100);
    System.out.print(Data[i]+ " \t");
}
for( int i=0; i<Data.length;++i){
    if(Data[i]==luck){
        System.out.println(luck+ " can be found in the following positions: ");
        System.out.println(i);
        score=score+10;
        System.out.println(luck+ " appears " +(luck/10)+ " times. You get " +score+ " points.");
    }else if(Data[i]!=luck){
        Arrays.sort(Data);
        System.out.println();
        System.out.println(luck+ " is not in the array.");
        System.out.println("Hint: " +Data[0]+ " is the lowest value and " +Data[19]+ " is the highest.");
        input1 = JOptionPane.showInputDialog("Please enter another number between 0 and 100.");
        luck=Integer.parseInt(input1);
    }
}
System.out.println();
System.out.println("Score: " +score);

}}

问题是您没有对照数组中的每个值检查您的值。 如果输入的值与数组中的第一个值(i = 0)不匹配,则您正在询问用户另一个值。

您要做的就是询问一个值,将其与表中的每个值进行比较,然后做出决定。 它存在还是不存在。

我添加了一个布尔值。 如果找到我们的电话号码,则将其设置为true,否则我们将显示消息并请用户重试。

尝试这个:

    boolean found = false;
    for( int i=0; i<Data.length;++i){
        if(Data[i]==luck){
            System.out.println(luck+ " can be found in the following positions: ");
            System.out.println(i);
            score=score+10;
            System.out.println(luck+ " appears " +(luck/10)+ " times. You get " +score+ " points.");
            found = true;
        }
    }
    if(!found){
            Arrays.sort(Data);
            System.out.println();
            System.out.println(luck+ " is not in the array.");
            System.out.println("Hint: " +Data[0]+ " is the lowest value and " +Data[19]+ " is the highest.");
            input1 = JOptionPane.showInputDialog("Please enter another number between 0 and 100.");
            luck=Integer.parseInt(input1);
        }

最后,您需要在循环内实现一个计数器,然后根据需要显示您的信息...现在,它将显示“#可以在以下位置找到”以及数组中每个实例的其他消息。 实现一个计数器以及一种跟踪找到的值的索引的方法,然后可以从for循环外部连贯地显示所有这些信息

编辑:为您提供更完整的实现...此代码基本上应该带您几乎需要去的地方:

public static void main(String[] args) {
    int Data[] = new int [20];
    for( int i=0; i<Data.length;++i){
        Data[i] = (int) (Math.random() * 100);
        System.out.print(Data[i]+ " \t");
    }

    while(true){
        String input1 = JOptionPane.showInputDialog("Please enter your lucky number between 0 and 100.");
        int luck=Integer.parseInt(input1);
        int score = 0;
        String positions = "";
        int counter = 0;
        System.out.println("Input " +luck);

        boolean found = false;
        for( int i=0; i<Data.length;++i){
            if(Data[i]==luck){
                positions +=  i + " ";
                counter++;
                score=score+10;
                found = true;
            }
        }
        if(found){
            System.out.println(luck+ " can be found in the following positions: ");
            System.out.println(positions);
            System.out.println(luck+ " appears " + counter + " times. You get " +score+ " points.");

        }
        else{
            Arrays.sort(Data);
            System.out.println();
            System.out.println(luck+ " is not in the array.");
            System.out.println("Hint: " +Data[0]+ " is the lowest value and " +Data[19]+ " is the highest.");
        }

        System.out.println();
        System.out.println("Score: " +score);
    }

}

暂无
暂无

声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.

 
粤ICP备18138465号  © 2020-2024 STACKOOM.COM