创建一个类，将文本文件的内容以一些变更显示在控制台上。

huangapple
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英文:

Create a class that displays the content of the text file to console with some changes

问题

  1. import java.io.BufferedReader;
  2. import java.io.File;
  3. import java.io.FileReader;
  4. import java.io.IOException;
  5. import java.util.Scanner;
  7. public class Part1 {
  9.     // 获取文件中的输入字符串
  10.     public static String getInput(String fileName) {
  11.         StringBuilder sb = new StringBuilder();
  12.         try {
  13.             Scanner scanner = new Scanner(new File(fileName), "UTF-8");
  14.             while (scanner.hasNextLine()) {
  15.                 sb.append(scanner.nextLine()).append(System.lineSeparator());
  16.             }
  17.             scanner.close();
  18.             return sb.toString().trim();
  19.         } catch (IOException ex) {
  20.             ex.printStackTrace();
  21.         }
  22.         return sb.toString();
  23.     }
  25.     // 删除长度为4及以上的单词的前两个字符
  26.     public static void convert() {
  27.         try (BufferedReader in = new BufferedReader(new FileReader("part1.txt"))) {
  29.             String line;
  30.             StringBuilder result = new StringBuilder();
  32.             while ((line = in.readLine()) != null) {
  33.                 String[] wordsInLine = line.split("[.,!?\\-\\s\\n]+");
  35.                 for (String string : wordsInLine) {
  36.                     if (isLongerThanFour(string) && defineLocale(string).equals("latn")) {
  37.                         result.append(string.substring(2)).append(" ");
  38.                     } else if (isLongerThanFour(string) && defineLocale(string).equals("cyrl")) {
  39.                         result.append(string.substring(4)).append(" ");
  40.                     } else {
  41.                         result.append(string).append(" ");
  42.                     }
  43.                 }
  44.             }
  46.             System.out.println(result);
  47.         } catch (IOException e) {
  48.             e.getMessage();
  49.         }
  50.     }
  52.     // 检查当前单词的长度是否大于等于4
  53.     public static boolean isLongerThanFour(String string) {
  54.         return string.length() >= 4;
  55.     }
  57.     // 判断输入单词的语言（西里尔字母或拉丁字母）
  58.     private static String defineLocale(String string) {
  59.         char ch = string.charAt(0);
  61.         if (Character.isAlphabetic(ch)) {
  62.             if (Character.UnicodeBlock.of(ch).equals(Character.UnicodeBlock.CYRILLIC)) {
  63.                 return "cyrl";
  64.             } else if (Character.UnicodeBlock.of(ch).equals(Character.UnicodeBlock.BASIC_LATIN)) {
  65.                 return "latn";
  66.             }
  67.         }
  68.         return "none";
  69.     }
  71.     public static void main(String[] args) {
  72.         Part1.convert();
  73.     }
  74. }

以上是你提供的代码的中文翻译，保留了代码的结构和原意，同时进行了一些格式上的调整。如果你有任何进一步的问题或需要更多帮助，请随时提问。

英文:

Changes: delete the first two characters of each word with the length of 4 and more characters
example: original 'qwerty', new 'erty'

A 'word' should be considered a continuous sequence of Cyrillic or Latin characters.

I wrote something like this, but output string is in line, but I need input text with indent characters.

  1. import java.io.BufferedReader;
  2. import java.io.File;
  3. import java.io.FileReader;
  4. import java.io.IOException;
  5. import java.util.Scanner;
  7. public class Part1 {
  9.     // getting input string from the file
  10.     public static String getInput(String fileName) {
  11.         StringBuilder sb = new StringBuilder();
  12.         try {
  13.             Scanner scanner = new Scanner(new File(fileName), "UTF-8");
  14.             while (scanner.hasNextLine()) {
  15.                 sb.append(scanner.nextLine()).append(System.lineSeparator());
  16.             }
  17.             scanner.close();
  18.             return sb.toString().trim();
  19.         } catch (IOException ex) {
  20.             ex.printStackTrace();
  21.         }
  22.         return sb.toString();
  23.     }
  25.     // deleting the first two characters of each word with the length of 4 and more characters
  26.     public static void convert() {
  27.         try (BufferedReader in = new BufferedReader(new FileReader("part1.txt"))) {
  29.             String line;
  30.             StringBuilder result = new StringBuilder();
  32.             while ((line = in.readLine()) != null) {
  33.                 String[] wordsInLine = line.split("[.,!?\\-\\s\\n]+");
  35.                 for (String string : wordsInLine) {
  36.                     if (isLongerThanFour(string) && defineLocale(string) == "latn") {
  37.                         result.append(string.substring(2) + " ");
  38.                     } else if (isLongerThanFour(string) && defineLocale(string) == "cyrl") {
  39.                         result.append(string.substring(4) + " ");
  40.                     } else {
  41.                         result.append(string + " ");
  42.                     }
  43.                 }
  44.             }
  46.             System.out.println(result);
  47.             }catch(IOException e){
  48.                 e.getMessage();
  49.             }
  50.         }
  52.     // checking for right length of current word   
  53.     public static boolean isLongerThanFour(String string){
  54.         return string.length() >= 4;
  55.     }
  57.     // define language of input word(one of cyrillic of latin languages)
  58.     private static String defineLocale(String string) {
  59.         char ch = string.charAt(0);
  61.         if (Character.isAlphabetic(ch)) {
  62.             if (Character.UnicodeBlock.of(ch).equals(Character.UnicodeBlock.CYRILLIC)) {
  63.                 return "cyrl";
  64.             } else if (Character.UnicodeBlock.of(ch).equals(Character.UnicodeBlock.BASIC_LATIN)){
  65.                 return "latn";
  66.             }
  67.         }
  68.         return "none";
  69.     }
  71.     public static void main(String[] args){
  72.         Part1.convert();
  73.     }
  75. }

Can you point on my mistakes or suggest cleaner solution.

Thank you in advance.

答案1

得分: 0

  1. public class Converter {
  3.     // 辅助枚举
  4.     enum Language {
  5.         cyr,
  6.         lat,
  7.         none
  8.     }
  10.     // 如果需要返回超过两种类型的值，请使用枚举
  11.     private static Language defineLocale(String string) {
  12.         char ch = string.charAt(0);
  14.         if (Character.isAlphabetic(ch)) {
  15.             if (Character.UnicodeBlock.of(ch).equals(Character.UnicodeBlock.CYRILLIC)) {
  16.                 return Language.cyr;
  17.             } else if (Character.UnicodeBlock.of(ch).equals(Character.UnicodeBlock.BASIC_LATIN)){
  18.                 return Language.lat;
  19.             }
  20.         }
  22.         return Language.none;
  23.     }
  25.     
  26.     public void convert() {
  27.         try (BufferedReader in = new BufferedReader(new FileReader("part1.txt"))) {
  29.             String line;
  30.             StringBuilder result = new StringBuilder();
  32.             while ((line = in.readLine()) != null) {
  33.                 String[] wordsInLine = line.split(" ");
  35.                 for (String s : wordsInLine) {
  36.                     if (s.length() > 3) {
  37.                         switch (defineLocale(s)) {
  38.                             case cyr:
  39.                                 result.append(s.substring(4));
  40.                                 break;
  41.                             case lat:
  42.                                 result.append(s.substring(2));
  43.                                 break;
  44.                             default:
  45.                                 result.append(s);
  46.                         }
  47.                     } else result.append(s);
  48.                     result.append(" ");
  49.                 }
  50.                 
  51.                 result.append("\n");//你遗漏的部分
  52.             }
  54.             System.out.println(result);
  55.         }catch(IOException e){
  56.             e.getMessage();
  57.         }
  58.     }
  59.     public static void main(String[] args){
  60.         new Converter().convert();
  61.     }
  62. }
英文: 
  1. public class Converter {
  3.     //helper enum
  4.     enum Language {
  5.         cyr,
  6.         lat,
  7.         none
  8.     }
  10.     // if you have to return more that two types of values then use enum
  11.     private static Language defineLocale(String string) {
  12.         char ch = string.charAt(0);
  14.         if (Character.isAlphabetic(ch)) {
  15.             if (Character.UnicodeBlock.of(ch).equals(Character.UnicodeBlock.CYRILLIC)) {
  16.                 return Language.cyr;
  17.             } else if (Character.UnicodeBlock.of(ch).equals(Character.UnicodeBlock.BASIC_LATIN)){
  18.                 return Language.lat;
  19.             }
  20.         }
  22.         return Language.none;
  23.     }
  25.     
  26.     public void convert() {
  27.         try (BufferedReader in = new BufferedReader(new FileReader("part1.txt"))) {
  29.             String line;
  30.             StringBuilder result = new StringBuilder();
  32.             while ((line = in.readLine()) != null) {
  33.                 String[] wordsInLine = line.split(" ");
  35.                 for (String s : wordsInLine) {
  36.                     if (s.length() > 3) {
  37.                         switch (defineLocale(s)) {
  38.                             case cyr:
  39.                                 result.append(s.substring(4));
  40.                                 break;
  41.                             case lat:
  42.                                 result.append(s.substring(2));
  43.                                 break;
  44.                             default:
  45.                                 result.append(s);
  46.                         }
  47.                     } else result.append(s);
  48.                     result.append(" ");
  49.                 }
  50.                 
  51.                 result.append("\n");//all you were missing
  52.             }
  54.             System.out.println(result);
  55.         }catch(IOException e){
  56.             e.getMessage();
  57.         }
  58.     }
  59.     public static void main(String[] args){
  60.         new Converter().convert();
  61.     }
  62. }

I hope this does not need any further explanation but dont be shy to ask if you dont understand something.

huangapple
  • 本文由 发表于 2020年7月26日 04:11:51
  • 转载请务必保留本文链接：https://java.coder-hub.com/63093118.html
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