Java，将字符串存储到数组中

Andrew 发表于 Dev

安德鲁

我希望将在命令提示符中以这种方式输入的原始问题（rawQuestions）：java Hangman Hello test 123，放入数组（问题）中。我知道 rawQuestion 在“将有效问题存储到数组中”部分不起作用，因为

“错误： ';' 预期”和“错误：不是声明”

在行中

"questions[vCount] = String rawQuestion;"

因此，我应该如何重写它？

public class Hangman {

    //Validation of raw questions

    public static boolean isValidQuestion(String rawQuestion){
        rawQuestion = rawQuestion.toUpperCase();
        boolean vQuestion = true;
        for(int i=0; i<rawQuestion.length(); i++){
            char c = rawQuestion.charAt(i);

            if(!(c>='A' && c<='Z'))
            vQuestion = false;
        }
        return vQuestion;
    }


    public static void main(String args[]){

        boolean vQs[] = new boolean[args.length];

        for(int i=0; i<args.length; i++){

            String rawQuestion = args[i];

            boolean b = isValidQuestion(rawQuestion);

            if(b)
                 System.out.println(rawQuestion + " is a valid question!");

            else
                 System.out.println("Error: " + rawQuestion + ", input must be a word consist of a-z or A-Z");

            vQs[i] = b;
        }

        //count the number of valid questions

        int vCount = 0;
        for(int i=0; i<vQs.length; i++){
            System.out.println(i + " " + vQs[i] );
            if(vQs[i])
                vCount++;
        }
        System.out.println("There are " + vCount + " valid questions");

        //store valid questions into an array

        String questions[] = new String[vCount];
        for(vCount=0; vCount<args.length; vCount++){
            questions[vCount] = String rawQuestion;
            System.out.println( questions[vCount] );


        }

    }
}

图马

我修复了一些东西并发表了评论，不确定它是否有效，我还没有编译它。

public static void main(String args[]){

boolean vQs[] = new boolean[args.length];
int vCount=0;

for(int i=0; i<args.length; i++){

    String rawQuestion = args[i];

    if(isValidQuestion(rawQuestion)){


    System.out.println(rawQuestion + " is a valid question!");
            //Here you have enough data to count the valid questions, three loops are not needed.
            ++vCount;
            vQs[i]=true;
        }else{
            System.out.println("Error: " + rawQuestion + ", input must be a word consist of a-z or A-Z");
            vQs[i]=false;
        }
    }

    System.out.println("There are " + vCount + " valid questions");

    //store valid questions into an array
    String questions[] = new String[vCount];

    int j=0;
    for(int i=0; i<args.length; i++){
        //You need to iterate for all strings, because vQs[] is long args.length
        if(vQs[i]){
            //Ok the i-th question was valid, let's move it and print it
            questions[j] = args[i];
            System.out.println( questions[j] );
            ++j;
        }
    }

}

}

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