解析：该程序将读取名为“file.txt”的文件，并计算文件中每个不同字的出现次数。它使用一些字符串操作来清理单词，并使用HashMap来存储每个单词的出现数。最后，程序打印出不同字的总数。
//ChatGPT4完成的代码和我所需要的有点差异
import java.io.BufferedReader;
import java.io.FileReader;
import java.util.HashMap;
import java.util.Map;
public class CountDistinctWords {
public static void main(String[] args {
try {
BufferedReader reader = new BufferedReader(new FileReader("file.txt";
String line = reader.readLine(;
Map<String, Integer> wordCount = new HashMap<String, Integer>(;
while (line != null {
String[] words = line.split(" ";
for (String word : words {
String cleanedWord = word.replaceAll("[^a-zA-Z0-9]", "".toLowerCase(;
if (!cleanedWord.isEmpty( {
if (wordCount.containsKey(cleanedWord {
int count = wordCount.get(cleanedWord;
wordCount.put(cleanedWord, count + 1;
} else {
wordCount.put(cleanedWord, 1;
}
}
}
line = reader.readLine(;
}
reader.close(;
System.out.println("Distinct words: " + wordCount.size(;
} catch (Exception e {
e.printStackTrace(;
}
}
}
使用ChatGPT4实现的是读取文件中除去中文的字母，而且用空格间隔的数量。
主要流程：使用缓冲流读取文件，使用Hashmap来读取每一行的中文，通过正则表达式来过滤出中文，用每一个中文当键，最后只需要读取HashMap的大小即可知道有几个中文。
//根据需求修改后的代码
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
public class readWordCount {
public static void main(String[] args {
BufferedReader reader = null;
try {
reader = new BufferedReader(new FileReader("read_word_count/file.txt";
String line = null;
Map<Character, Integer> wordCount = null;
int count = 0;
wordCount = new HashMap<Character, Integer>(;
while (true {
line = reader.readLine(;
if(line == null{
break;
}
line = line.replaceAll("[^\\u4E00-\\u9FA5]", "";
char[] words = line.toString(.toCharArray(;
for (char word : words {
if (wordCount.containsKey(word {
count = wordCount.get(word;
wordCount.put(word, count + 1;
} else {
wordCount.put(word, 1;
}
}
}
System.out.println("不同中文的个数: " + wordCount.size(;
} catch (Exception e {
e.printStackTrace(;
}finally {
try {
reader.close(;
} catch (IOException e {
throw new RuntimeException(e;
}
}
}
}
测试样例：
鲁迅《从百草园到三味书屋》滴滴滴
不同中文的个数: 13
记录每一个学习瞬间