在Java中将计数器重置为零？

Question

我有以下代码：

for(int sentenceCounter = 0; sentenceCounter < sentences.length; sentenceCounter++)
{
    double score = 0;
    String[] sentence = sentences[sentenceCounter].split(" ");

    for (int titleCounter = 0; titleCounter < titles.length; titleCounter++)
    {

        for (int wordCounter = 0; wordCounter < sentence.length; wordCounter++)
        {
            if (titles[titleCounter].equals(sentence[wordCounter]))
            {
                if(titleCounter == 0)
                {

                    score += titleValue * hundred / 100;
                    sentenceScore.put(sentenceCounter, score);
                    System.out.println(sentenceCounter + " " + wordCounter + " " + score);

                }else
                {

                    score +=  titleValue - titleSubtract * hundred / 100;
                    sentenceScore.put(sentenceCounter, score);
                    System.out.println(sentenceCounter + " " + wordCounter + " " + sentenceScore.get(0));
                }

                System.out.println(sentenceCounter);

            }

        }
    }
}

我试图在 sentenceCounter 增加后重置分数计数器，但是当我在 sentenceCounter 的 for 循环之后的右侧设置 score = 0 时，它不会自行重置。那么，我该如何重置呢？

程序的步骤如下： 1. 将标题分成单个单词。 2. 将句子分成单个单词。 3.查看句子是否包含标题中的单词。如果是，则将句子分数增加 X。 4. 重复标题中的下一个单词。 5. 如果句子包含标题中的另一个单词，则添加到先前的分数。 6. 对下一句重复此操作，但首先将分数计数器设置为零。这就是我卡住的地方。

这是我从上面的代码中观察到的输出：

0 0 10.0
0
0 1 19.3
0
1 5 19.3
1

如您所见，第二句从 19.3 开始，而不是从零开始。

这是完整的程序：

import java.util.HashMap;

导入 java.util.Map;

公共类 MainDemo {

public static void main(String[] args) {
    // TODO Auto-generated method stub
    String fullTitle = "Facebook traffic website";
    String[] titles = fullTitle.split(" ");
    Double titleValue = 10.0;
    Double sentenceSubtract = 13.0;
    Double titleSubtract = 0.70;
    Double hundred = 100.0;
    HashMap<Integer, String> titleArray = new HashMap<Integer, String>();
     for(int i =0; i < titles.length; i++)
     {
         String t = titles[i];
         titleArray.put(i, t);
     }
    String article = "Facebook traffic is growing fast. It is the second largest website. ";

    HashMap<Integer, Double> sentenceScore = new HashMap<Integer, Double>();


    String[] sentences = article.split("\\. ");
    String[] str;



    for(int sentenceCounter = 0; sentenceCounter < sentences.length; sentenceCounter++)
    {
        double score = 0;
        String[] sentence = sentences[sentenceCounter].split(" ");

        for (int titleCounter = 0; titleCounter < titles.length; titleCounter++)
        {



            for (int wordCounter = 0; wordCounter < sentence.length; wordCounter++)
            {
                if (titles[titleCounter].equals(sentence[wordCounter]))
                {
                    if(titleCounter == 0)
                    {

                        score += titleValue * hundred / 100;
                        sentenceScore.put(sentenceCounter, score);
                        System.out.println(sentenceCounter + " " + wordCounter + " " + score);

                    }else
                    {

                        score +=  titleValue - titleSubtract * hundred / 100;
                        sentenceScore.put(sentenceCounter, score);
                        System.out.println(sentenceCounter + " " + wordCounter + " " + sentenceScore.get(0));
                    }

                    System.out.println(sentenceCounter);

                }

            }
        }
    }





        }















}

Answer 1

您无需将在循环体中定义的字段重置为零，它将在下一次迭代中重新创建 -

for(int sentenceCounter = 0; sentenceCounter < sentences.length; sentenceCounter++)
{
  double score = 0; // <-- create a score variable, set it to 0.
  System.out.println("Score is " + score);

Answer 2

每次迭代都会重置您的分数计数器。问题是，如果 titleCounter != 0，您正在打印一组不同的值。您希望打印分数的控制台打印实际上定义为打印 sentenceScore.get(0)。

这是正确的。 sentenceScore.get(0) 将是在重置为 0 之前的最后一次迭代的得分值。