单独的“for”循环迭代

Question

我将如何使我的四个循环的每次迭代都是随机的。 到目前为止，结果使所有 20 个句子都输出相同的输出，尽管每次都是从静态类 OuterWord 中创建的四个数组中选择随机单词。 我省略了我认为不必要的代码部分，包括为每个数组和句子创建的 getMethods，希望这不会对我的问题产生负面影响。

`公共类造句者{

static class OuterWord {
    //arrays
    String [] article = {"the", "a", "one", "some", "any"}; //array for articles
    String [] noun = {"boy", "girl", "dog", "town", "car"}; //array for nouns
    String [] verb = {"drove", "jumped", "ran", "walked", "skipped"}; //array for verbs
    String [] preposition = {"to", "from", "over", "under", "on"}; //array for prepositions

}
static class OuterSentence {
   int random = (int) (Math.random()*5);
    OuterWord word = new OuterWord();

    //sentence structure article-noun-verb-preposition-article-noun
    //StringBuilder with append, attempts to concatenate with .append
    //This code works as well
    StringBuilder sentence = new StringBuilder()
                    .append(word.article[random].substring(0, 1).toUpperCase())
                    .append(word.article[random].substring(1))
                    .append(" ")
                    .append(word.noun[random])
                    .append(" ")
                    .append(word.verb[random])
                    .append(" ")
                    .append(word.preposition[random])
                    .append(" ")
                    .append(word.article[random])
                    .append(" ")
                    .append(word.noun[random])
                    .append(".");
}


public static void main(String args[]) {
    //random element from arrays
    //int random = (int) (Math.random()*5);

    //instantiation of the Word and Sentence classes
    OuterWord word = new OuterWord();
    OuterSentence s = new OuterSentence();


    //loop initializer
    int counter = 0;

    //for loop for 20 iterations
    for(int i = 0; i < 20; i++){
        //counter to keep track of iterations
        counter = counter + 1;
        //sentence article-noun-verb-preposition-article-noun
        System.out.println("Sentence " + counter + ": " + s.sentence.);
    }
}

Answer 1

我会首先<\/strong><\/em>将所有内容都移到一个类中，您的代码因组织方式而变得不必要地复杂。

private static String[] article = { "the", "a", "one", "some", "any" };
private static String[] noun = { "boy", "girl", "dog", "town", "car" };
private static String[] verb = { "drove", "jumped", "ran", "walked", "skipped" };
private static String[] preposition = { "to", "from", "over", "under", "on" };

Answer 2

只需将OuterSentence<\/code>对象移动到 for 循环即可。

for(int i = 0; i < 20; i++){
        OuterSentence s = new OuterSentence();
        //counter to keep track of iterations
        counter = counter + 1;
        //sentence article-noun-verb-preposition-article-noun
        System.out.println("Sentence " + counter + ": " + s.sentence);
    }