四则运算+文件

Posted 2021-01-20 daisy99lijing

  1 package Forth;
  2 import java.io.*;
  3 import java.util.*;
  4 public class Main1 {
  5 
  6     public static void main(String[] args) throws IOException {
  7         // TODO 自动生成的方法存根
  8 try{
  9 List<Question>questionBase=new ArrayList<Question>();//题库
 10 int r=4;//操作数范围
 11 int n=10;//题目个数
 12 Question q=new Question(1);
 13 questionBase.add(q);
 14 while(questionBase.size()<n||Question.isRepeated(questionBase)){
 15     q=new Question(r);
 16     questionBase.add(q);//一个个向数据库添加内容
 17 }
 18 
 19 //生成题目文件,生成写入文件
 20 BufferedWriter bw1=new BufferedWriter(new FileWriter("C:\\Users\\ASUS\\Desktop\\四则运算\\Questions.txt"));
 21 
 22 String e="C:\\Users\\ASUS\\Desktop\\四则运算\\Questions.txt";
 23 
 24 System.out.println("***5**");
 25 for(int i=0;i<questionBase.size();i++){
 26     String s1=i+1+"."+questionBase.get(i)+"
";
 27     bw1.write(s1);
 28 }    
 29 bw1.flush();//把流的内容压倒文件中显示出来
 30     bw1.close();
 31     //br1.close();
 32     
 33 //生成答案文件Answers.txt
 34 BufferedWriter bw2=new BufferedWriter(new FileWriter("C:\\Users\\ASUS\\Desktop\\四则运算\\Answers.txt"));
 35 for(int i=0;i<questionBase.size();i++){
 36     String s=questionBase.get(i).result+"*"+"
";
 37     bw2.write(s);
 38 }
 39 bw2.flush();
 40 bw2.close();
 41 System.out.println("请打开文件并在文件中输入答案：");
 42 System.out.println("如果作答完成，请及时保存。。。。并输入1");
 43 Scanner in=new Scanner(System.in);
 44 int flag=in.nextInt();
 45 if(flag==1){
 46 //读答题文件
 47     BufferedReader br1=new BufferedReader(new FileReader(e));
 48     List<String> exercises=new ArrayList<String>();
 49     List<String> answers=new ArrayList<String>();
 50     String str="";
 51     str=br1.readLine();
 52     for(int i=0;null!=str;i++)
 53       exercises.add(str.replace(i+1+". "+questionBase.get(i),""));
 54   br1.close();
 55   String d="C:\\Users\\ASUS\\Desktop\\四则运算\\Answers.txt";
 56 //读取答案文件
 57   BufferedReader br2=new BufferedReader(new FileReader(d));
 58  for(int i=0;null!=(str=br2.readLine());i++)
 59       answers.add(str=br2.readLine());
 60   br2.close();
 61 String correct="",wrong="";
 62 List<Integer> corrects=new ArrayList<Integer>();
 63 List<Integer> wrongs=new ArrayList<Integer>();
 64 for(int i=0;i<answers.size();i++){
 65     if(exercises.get(i).equals(answers.get(i))) corrects.add(i+1);
 66     else wrongs.add(i+1);
 67 }
 68 for(int i=0;i<corrects.size();i++) correct+=corrects.get(i)+",";
 69 for(int i=0;i<wrongs.size();i++) wrong+=wrongs.get(i)+",";
 70 if(corrects.size()>0) correct=correct.substring(0,correct.length()-1);
 71 if(wrongs.size()>0) wrong=wrong.substring(0,wrong.length()-1);
 72 
 73 
 74 
 75 System.out.println("*****");
 76 //对错题数量统计
 77 String a="";
 78 for(int i=0;i<args.length;i++){
 79     if(args[i].equals("-e")) e=args[i+1];
 80     if(args[i].equals("-a")) a=args[i+1];
 81 }
 82 //没有给出答题文件路径
 83 if(e.equals("")){
 84     System.err.println("404: The exercises file is not found!");
 85     return;
 86 }
 87 //没有给出答案文件路径
 88 if(a.equals("")){
 89     System.err.println("404: The answers file is not found!");
 90     return;
 91 }
 92 //生成分数文件Grade.txt
 93 BufferedWriter bw=new BufferedWriter(new FileWriter("C:\\Users\\ASUS\\Desktop\\四则运算\\Grade.txt"));
 94 bw.write("Correct:"+corrects.size()+"("+correct+")
Wrong:"+wrongs.size()+"("+wrong+")");
 95 bw.flush();
 96 bw.close();
 97 }
 98 }  catch(FileNotFoundException e) {
 99     e.printStackTrace();
100 }
101 catch(IOException e) {
102     e.printStackTrace();
103 }
104 
105     }
106 }

 

 

3.5h