1.链接

2.改进现有代码

一、分析初始代码

类图

覆盖率统计




单元测试



所发现的不足之处

  • 类没有注释,减少易读性
  • 源程序中使用驼峰命名法,但是一些方法的命名有缺陷,如Fraction类中的creatfraction(),应改为createFraction()
  • 不能让用户选择题目的数量
  • 没有统计正确率
  • 只有两个数之间的运算

二、功能改进与扩展

  • 为每个类增加注释,修改不恰当的命名

  • 重构Calculator类,增加calc()方法

          //Class Calculator
      	 public static String calc(String op,Fraction a,Fraction b){
      		 switch (op) {
      			case "+":
      				System.out.println("+");
      				return add(a,b);
      			case "-":
      				return sub(a,b);
      			case "×":
      				return mul(a,b);
      			case "÷":
      				return div(a,b);
      			default :
      				return null;
      			}
      	 }
    
  • 扩展了三位数之间的运算

     public static String createRandomOp(){
     	String operator = null;
     	Random random = new Random();
     	switch (random.nextInt(4)) {
     	case 0:
     		operator = "+"; 
     		break;
     	case 1:
     		operator = "-";
     		break;
     	case 2:
     		operator = "×";
     		break;
     	case 3:
     		operator = "÷";
     		break;
     	}
     	return operator;
     }   
    
     public class Createformula {
     public static int testNum = 5; 
     private String[] result = new String[testNum]; 
     private String[] number_1 = new String[testNum]; 
     private String[] number_2 = new String[testNum];
     private String[] number_3 = new String[testNum];
     private String[] operator1 = new String[testNum]; 
     private String[] operator2 = new String[testNum]; 
     private ArrayList<String> scoresList = new ArrayList<String>(); 
     private BufferedWriter writer;
    
     public Createformula() {
    
     }
     public void createTest() {
     	Random random = new Random();
     	Fraction f1 = new Fraction();
     	Fraction f2 = new Fraction();
     	Fraction f3 = new Fraction();
     	for (int i = 0; i < testNum; i++) {
     		   f1.creatfraction();
                f2.creatfraction();
                f3.creatfraction();
     		number_1[i] = f1.getFraction();
     		number_2[i] = f2.getFraction();
     		number_3[i] = f3.getFraction();
     		operator1[i] = createRandomOp();
     		operator2[i] = createRandomOp();
     		Fraction temp = new Fraction();  //put the result of f1f2
     	if(operator1[i].equals("+")||operator1[i].equals("-") ){
     		temp.setFraction(Calculator.calc(operator2[i],f2,f3));
     		temp.convertResult();
     		result[i] = Calculator.calc(operator1[i],f1,temp);
     	}
     	else{
     		temp.setFraction(Calculator.calc(operator1[i],f1,f2));
     		temp.convertResult();
     		result[i] = Calculator.calc(operator2[i],temp,f3);
     	}
     	}
     }  
     
      //Class Fraction
     public  void convertResult(){
     	if(fraction != null){
     	if(fraction.contains("/")){
     		String str[] = fraction.split("/");
     		this.numerator = Integer.parseInt(str[0]);
     		this.denominator = Integer.parseInt(str[1]);
     			}
     	else{
     		this.numerator = Integer.parseInt(fraction);
     		this.denominator = 1;
     	}
     }
     	else System.out.println("fraction null");
     }  
    
  • 增加用户选择题目数量功能

      //Class Background
      public void setFormulaNum() {
      	String str; 
      	str = JOptionPane.showInputDialog("请输入题目数量"); 
      	this.formulaNum = Integer.parseInt(str);
      }  
    
  • 增加正确率统计功能

      //Class Background
      public void actionPerformed(ActionEvent e) {
      		btnExit.addMouseListener(new MouseAdapter() {
      			@Override
      			public void mouseClicked(MouseEvent arg0) {
      				// TODO Auto-generated method stub
      				System.exit(0);
      			}
      		});
      		
      		btnSubmit.addMouseListener(new MouseAdapter() {
      			@Override
      			public void mouseClicked(MouseEvent arg0) {
      				// TODO Auto-generated method stub
      				isEnd=!isEnd; 
      				for (int i = 0; i < formulaNum; i++) {
      					answers[i]=tfdAnswer[i].getText();  
      				}
      				wrong= background.checkAnswer(answers);
      				String s=null;
      				if(wrong.length==0)
      					s=tips.get(5);
      				else{
      					s=tips.get(6)+"\n";
      					String standardAnswer[]=new String[formulaNum];
      					standardAnswer=background.getStandardAnswer();
      					questions = background.getQuestions();
      					for(int i=0;i<wrong.length;i++){
      						s=s+questions[new Integer(wrong[i])-1]+standardAnswer[new Integer(wrong[i])-1];
      						s=s+"\n\n\n";
      						}
      					s = s + tips.get(7)+
      							String.valueOf(background.getRightAnswer()*100/background.testNum) +"%";
      					}
      					
      				
      				
      				JOptionPane.showMessageDialog(null, s, "错题",JOptionPane.PLAIN_MESSAGE);;
      			}
      				
      			
      		});  
    
  • 运行结果截图:

3.两人合作

一、编码规范

  • 1.使用驼峰命名法
  • 2.缩进:tab
  • 3.类的开头注释

二、结对照片

个人开发流程 预估耗费时间(min) 实际耗费时间(min)
planning 30 30
estimate 15 20
development 60 70
analysis 30 20
design spec 10 5
design review 10 5
coding standard 15 10
design 30 40
coding 120 90
code review 10 10
test 10 20
reporting 10 15
测试报告 10 5
计算工作量 5 7
提出过程改进计划 10 15

三、码云提交记录

四、心得体会

结对编程确实能够带来1+1>2的效果,两个人互相讨论后各司其职,其中遇到问题互相帮助。

posted on 2018-03-24 19:32  一包辣条Zz  阅读(219)  评论(1编辑  收藏  举报