用Java语言做：1、加法、减法、加减混合运算习题生成50道，每行五个算式；2、加法运算结果要在100以内；减法运算结果要大于0小于100；混合算式则是上述两条均满足；3、将生成的加法、减法、加减混合算法分别生成有结果的与无结果的csv文件并存入；4、写一个批改程序，分别读取无结果加减与混合算式的csv文件显示在控制台，可以在算式后面填写答案，再将答案与相应的有结果csv文件比较，显示错误个数以及错正却个数。5、csv文件命名为“”____习题文件_50道_01.csv“，例如加法则是"加法习题文件_50道_01.csv"，无结果则是"加法习题文件_50道_02.csv"，并且两者存放的算式完全一致，区别仅仅在于有无结果；7、生成相应的main方法。最后得出实验总结

以下是Java代码实现：

import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Random;
import java.util.Scanner;

public class MathHomework {
    private static final int NUM_OF_QUESTIONS = 50;

    // 生成加法题目
    private static String generateAdditionQuestions() {
        StringBuilder sb = new StringBuilder();
        Random random = new Random();
        for (int i = 0; i < NUM_OF_QUESTIONS; i++) {
            int a = random.nextInt(100);
            int b = random.nextInt(100 - a);
            sb.append(a + " + " + b + " = ,");
        }
        return sb.toString();
    }

    // 生成减法题目
    private static String generateSubtractionQuestions() {
        StringBuilder sb = new StringBuilder();
        Random random = new Random();
        for (int i = 0; i < NUM_OF_QUESTIONS; i++) {
            int a = random.nextInt(100);
            int b = random.nextInt(a);
            sb.append(a + " - " + b + " = ,");
        }
        return sb.toString();
    }

    // 生成加减混合题目
    private static String generateMixedQuestions() {
        StringBuilder sb = new StringBuilder();
        Random random = new Random();
        for (int i = 0; i < NUM_OF_QUESTIONS; i++) {
            if (random.nextBoolean()) { // 生成加法
                int a = random.nextInt(100);
                int b = random.nextInt(100 - a);
                sb.append(a + " + " + b + " = ,");
            } else { // 生成减法
                int a = random.nextInt(100);
                int b = random.nextInt(a);
                sb.append(a + " - " + b + " = ,");
            }
        }
        return sb.toString();
    }

    // 生成有结果的csv文件
    private static void generateResultCsvFile(String questions, String fileName) {
        try (BufferedWriter bw = new BufferedWriter(new FileWriter(fileName))) {
            String[] questionArray = questions.split(",");
            int count = 0;
            for (String question : questionArray) {
                bw.write(question);
                bw.write(count % 5 == 4 ? "\n" : ",");
                count++;
            }
            bw.flush();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    // 生成无结果的csv文件
    private static void generateNoResultCsvFile(String questions, String fileName) {
        try (BufferedWriter bw = new BufferedWriter(new FileWriter(fileName))) {
            String[] questionArray = questions.split(",");
            for (String question : questionArray) {
                bw.write(question.substring(0, question.lastIndexOf("=") + 2));
                bw.write("\n");
            }
            bw.flush();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    // 批改程序
    private static void checkAnswers(String noResultFileName, String resultFileName) {
        try (Scanner scanner = new Scanner(System.in)) {
            String[] noResultArray = Utils.readCsvFile(noResultFileName);
            String[] resultArray = Utils.readCsvFile(resultFileName);
            int errorCount = 0; // 错误个数
            int correctErrorCount = 0; // 错正却个数
            for (int i = 0; i < noResultArray.length; i++) {
                System.out.print(noResultArray[i]);
                String answer = scanner.nextLine();
                // 比较答案
                if (!answer.equals(resultArray[i].substring(resultArray[i].lastIndexOf("=") + 2))) {
                    errorCount++;
                    if (Integer.parseInt(answer) == Integer.parseInt(resultArray[i].substring(resultArray[i].lastIndexOf("=") + 2))) {
                        correctErrorCount++;
                    }
                }
            }
            System.out.println("错误个数：" + errorCount);
            System.out.println("错正却个数：" + correctErrorCount);
        }
    }

    public static void main(String[] args) {
        String additionQuestions = generateAdditionQuestions();
        String subtractionQuestions = generateSubtractionQuestions();
        String mixedQuestions = generateMixedQuestions();

        generateResultCsvFile(additionQuestions, "加法习题文件_50道_01.csv");
        generateNoResultCsvFile(additionQuestions, "加法习题文件_50道_02.csv");

        generateResultCsvFile(subtractionQuestions, "减法习题文件_50道_01.csv");
        generateNoResultCsvFile(subtractionQuestions, "减法习题文件_50道_02.csv");

        generateResultCsvFile(mixedQuestions, "混合算式习题文件_50道_01.csv");
        generateNoResultCsvFile(mixedQuestions, "混合算式习题文件_50道_02.csv");

        checkAnswers("加法习题文件_50道_02.csv", "加法习题文件_50道_01.csv");
        checkAnswers("减法习题文件_50道_02.csv", "减法习题文件_50道_01.csv");
        checkAnswers("混合算式习题文件_50道_02.csv", "混合算式习题文件_50道_01.csv");
    }
}

实验总结：本次实验主要学习了Java中的文件读写操作、随机数生成、字符串操作、批处理程序等知识点。在实现过程中，需要注意算式范围的限制、文件名的命名规范以及程序逻辑的正确性，以保证程序的可读性和正确性。通过本次实验，我对Java语言的基础知识有了更深入的理解，并且加强了对Java语言的编程能力和实践能力。