java - 找出文件中与字符串数组中的任何单词都不匹配的单词数

Question

我正在尝试创建一个从文件中读取数据的程序。我希望每次都检查文件中的下一个单词是否与特定字符串数组中的特定单词匹配。

每次单词不匹配时，我都想记录(错误++)的次数，并打印文件中的单词与字符串数组中的至少一个单词不匹配的次数。

这是我的程序:

public class main_class {

    public static int num_wrong;
    public static java.io.File file = new java.io.File("text.txt");
    public static String[] valid_letters = new String[130];
    public static boolean wrong = true;
    public static String[] sample = new String[190];

    public static void text_file() throws Exception {
        // Create Scanner to read file

        Scanner input = new Scanner(file);

        String[] valid_letters = { "I", " have ", " got ", "a", "date", "at",
                "quarter", "to", "eight", "8", "7:45", "I’ll", "see", "you",
                "the", "gate", ",", "so", "don’t", "be", "late", "We",
                "surely", "shall", "sun", "shine", "soon", "would", "like",
                "sit", "here", "cannot", "hear", "because", "of", "wood",
                "band", "played", "its", "songs", "banned", "glamorous",
                "night", "sketched", "a", "drone", "flying", "freaked", "out",
                "when", "saw", "squirrel", "swimming", "man", "had", "cat",
                " that", "was", "eating", "bug", "After", "dog", "got", "wet",
                "Ed", "buy", "new", "pet", "My", "mom", "always", "tells",
                "me", "beautiful", "eyes", "first", "went", "school", "wanted",
        "die" };

        while (input.hasNext()) {
            String[] sample = input.next().split("\t");

            for (int i = 0; i < valid_letters.length; i++) {
                for (int j = 0; j < 1; j++) {
                    if (sample[j] == valid_letters[i]) {
                        boolean wrong = false;
                        System.out.print("break");
                        break;
                    }
                }
            }
            if (wrong = true) {
                num_wrong++;
            }
        }

        // print out the results from the search
        System.out
        .print(" The number of wrong words in the first 13 sentences are "
                + num_wrong);
        // Close the file
        input.close();
    }
}

例如文本文件包含:

I want to go to school little monkey 

程序应该返回的错误数是2。

Answer 1

代码:

import java.util.Scanner;

public class main_class {

    public static int num_wrong = 0;
    public static java.io.File file = new java.io.File("text.txt");
    public static String[] valid_letters = new String[130];
    public static boolean wrong = true;
    public static String[] sample = new String[190];

    public static void main (String [] args) {
        try {
            text_file();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void text_file() throws Exception {
        // Create Scanner to read file    
        Scanner input = new Scanner(file);

        String [] valid_letters = { "I", " have ", " got ", "a", "date", "at",
                "quarter", "to", "eight", "8", "7:45", "I’ll", "see", "you",
                "the", "gate", ",", "so", "don’t", "be", "late", "We",
                "surely", "shall", "sun", "shine", "soon", "would", "like",
                "sit", "here", "cannot", "hear", "because", "of", "wood",
                "band", "played", "its", "songs", "banned", "glamorous",
                "night", "sketched", "a", "drone", "flying", "freaked", "out",
                "when", "saw", "squirrel", "swimming", "man", "had", "cat",
                " that", "was", "eating", "bug", "After", "dog", "got", "wet",
                "Ed", "buy", "new", "pet", "My", "mom", "always", "tells",
                "me", "beautiful", "eyes", "first", "went", "school", "wanted",
                "die" };

        while (input.hasNext()) {
            // NOTE: split using space, i.e. " "
            String[] sample = input.next().split(" ");

            // NOTE: j < sample.length
            for (int j = 0; j < sample.length; j++) 
            {
                for (int i = 0; i < valid_letters.length; i++) 
                {
                    // NOTE: string comparison is using equals
                    if (sample[j].equals(valid_letters[i])) {

                        // NOTE: You want to update the variable wrong.
                        // And not create a local variable 'wrong' here!
                        wrong = false;
                        System.out.printf("%-12s is inside!%n",
                                "'" + valid_letters[i] + "'");
                        break;
                    }
                }
                if (wrong) {
                    num_wrong++;
                }
                // Reset wrong
                wrong = true;
            }
        }

        // Print out the results from the search
        System.out.println("The number of wrong words in the first 13 sentences are "
                + num_wrong);
        // Close the file
        input.close();
    }
}

输入(存储在“text.txt”中):

I want to go to school little monkey 

输出:

'I'          is inside!
'to'         is inside!
'to'         is inside!
'school'     is inside!
The number of wrong words in the first 13 sentences are 4
//'go', 'want', 'little' and 'monkey' are not inside the String array

注意:

• Value String 的比较使用 equals , 不是 == (用于 Reference 比较)
• boolean wrong = false;创建一个局部变量
• 你的 for 循环应该使用 j < sample.length
• 应使用 " " 拆分字符串(空格)，而不是 "\t" (制表符)