结对编程1
团队成员： 我：陈俊达 201421122076
伙伴：林仙平 201421122079
需求分析：
1、在作业1的基础上加入GUI。
4、用户可以根据自己需要选择语言（只有中文简体与英文两种可选）。
思维导图：
代码规范：
项目截图 ：
代码展示：
package GUI; public class CountExp { //计算表达式答案 public static String countAnswer(String exp) { int result = 0; int a1 = 0, a2 = 0; int b = 0;// 为0说明符号后面的数为负数，1 为正数 int bb = 0;// 符号后面的数字长度-1 int w = 0;// w用来表示符号前面打数字打位数-1 int ww = 0;// ww为0说明算术符号前面的数是正数，为1说明是负数 String exp1 = "";// 接收去括号后的表达式 String exp2 = "";// 接收去乘除号后打表达式 String exp3 = "";// 用来接收分数 // 去括号 for (int i = 0; i < exp.length(); i++) { if (exp.charAt(i) == '(') { int i1 = 0; int i2 = 0; // 判断算术符号前面的数是否多位 if (exp.charAt(i + 2) != '-' && exp.charAt(i + 2) != '+') { i1 = i1 + 1; if (exp.charAt(i + 3) != '-' && exp.charAt(i + 3) != '+') i1 = i1 + 1; } // 判断算术符号后面的数是否多位 if (exp.charAt(i + i1 + 4) != ')') { i2 = i2 + 1; if (exp.length() > (i + i1 + 5) && exp.charAt(i + i1 + 5) != ')') i2 = i2 + 1; } a1 = Integer.parseInt(exp.substring(i + 1, i + 2 + i1)); a2 = Integer.parseInt(exp .substring(i + 3 + i1, i + 4 + i1 + i2)); if (exp.charAt(i + 2) == '+') exp1 = exp1 + (a1 + a2); else exp1 = exp1 + (a1 - a2); i = i + 4 + i1 + i2; } else exp1 = exp1 + exp.charAt(i); } // 循环先算公式里的乘跟除 for (int j = 0; j < exp1.length(); j++) { if (exp1.charAt(j) == '*') { w = 0;// w用来表示符号前面打数字的位数-1 ww = 0;// ww为0说明算术符号前面的数是正数，为1说明是负数 if ((j - 2) > 0 && exp1.charAt(j - 2) != '-' && exp1.charAt(j - 2) != '+' && exp1.charAt(j - 2) != '*' && exp1.charAt(j - 2) != '÷') { w = w + 1; if ((j - 2 - w) > 0 && exp1.charAt(j - 2 - w) != '-' && exp1.charAt(j - 2 - w) != '+' && exp1.charAt(j - 2) != '*' && exp1.charAt(j - 2) != '÷') w = w + 1; } if ((j - 2 - w) > 0 && exp1.charAt(j - 2 - w) == '-' && ((j - 3 - w) > 0 && exp1.charAt(j - 3 - w) == '-' || (exp1 .charAt(j - 3 - w) == '+'))) ww = ww + 1; a1 = Integer.parseInt(exp1.substring(j - w - 1, j)); if (ww == 1) a1 = 0 - a1; b = 0;// 为0说明符号后面的数为负数，1 为正数 bb = 0;// 符号后面的数字长度-1 // 判断算术符号后面的数是否是负数 if (exp1.charAt(j + 1) == '-') b = b + 1; // 判断算术符号后面的数是否多余一位 if (exp1.length() > (j + 2 + b) && (exp1.charAt(j + 2 + b) != '-' && exp1.charAt(j + 2 + b) != '+' && exp1.charAt(j + 2 + b) != '*' && exp1 .charAt(j + 2 + b) != '÷')) { bb = bb + 1; if (exp1.length() > (j + 3 + b) && (exp1.charAt(j + 3 + b) != '-' && exp1.charAt(j + 3 + b) != '+' && exp1.charAt(j + 3 + b) != '*' && exp1 .charAt(j + 3 + b) != '÷')) bb = bb + 1; } a2 = Integer .parseInt(exp1.substring(j + 1 + b, j + 2 + b + bb)); if (b == 1) a2 = 0 - a2; exp2 = exp2.substring(0, j - 1 - w - ww); exp2 = exp2 + (a1 * a2); exp2 = exp2 + exp1.substring(j + 2 + b + bb, exp1.length()); exp1 = exp2; exp2 = ""; j = -1; continue; } else if (exp1.charAt(j) == '÷') {// 遇到除号 ，则进行除法运算，结果为分数 w = 0;// w用来表示符号前面打数字打位数-1 ww = 0;// ww为0说明算术符号前面的数是正数，为1说明是负数 if ((j - 2) > 0 && exp1.charAt(j - 2) != '-' && exp1.charAt(j - 2) != '+') { w = w + 1; if (exp1.charAt(j - 2 - w) != '-' && exp1.charAt(j - 2 - w) != '+') w = w + 1; } if ((j - 2 - w) > 0 && exp1.charAt(j - 2 - w) == '-' && (exp1.charAt(j - 3 - w) == '-' || (exp1.charAt(j - 3 - w) == '+'))) ww = ww + 1; a1 = Integer.parseInt(exp1.substring(j - w - 1, j)); b = 0;// 为0说明符号后面的数为负数，1 为正数 bb = 0;// 符号后面的数字长度-1 // 判断算术符号后面的数是否是负数 if (exp1.charAt(j + 1) == '-') b = b + 1; // 判断算术符号后面的数是否多余一位 if (exp1.length() > (j + 2 + b) && (exp1.charAt(j + 2 + b) != '-' && exp1.charAt(j + 2 + b) != '+' && exp1.charAt(j + 2 + b) != '*' && exp1 .charAt(j + 2 + b) != '÷')) { bb = bb + 1; if (exp1.length() > (j + 3 + b) && (exp1.charAt(j + 3 + b) != '-' && exp1.charAt(j + 3 + b) != '+' && exp1.charAt(j + 3 + b) != '*' && exp1 .charAt(j + 3 + b) != '÷')) bb = bb + 1; } a2 = Integer .parseInt(exp1.substring(j + 1 + b, j + 2 + b + bb)); if (a1 % a2 == 0) { exp2 = "" + (a1 / a2); return exp2; } else if (a1 < a2) { exp2 = "" + a1 + "/" + a2; return exp2; } else { int e1 = a1 / a2; int e2 = a1 - a2 * e1; exp2 = "" + e1 + "’" + e2 + "/" + a2; return exp2; } } else exp2 = exp2 + exp1.charAt(j); } int fs = 10;// 用来记录表达式括号的位置 // 进行加减运算 for (int xx = 0; xx < exp2.length(); xx++) { if (exp2.charAt(xx) == '/') fs = xx; } int aa = 0;// 用来暂a1,a2的值 if (fs == 10) { for (int fss = 1; fss < exp2.length(); fss++) { if (exp2.charAt(fss) == '+') { b = 0;// 符号后面的数字长度-1 bb = 0;// 为0说明符号后面的数为负数，1 为正数 w = 0;// w用来表示符号前面打数字打位数-1 ww = 0;// ww为0说明算术符号前面的数是正数，为1说明是负数 if (exp2.charAt(0) == '-') bb = bb + 1; b = fss - bb; a1 = Integer.parseInt(exp2.substring(0, fss)); if ((fss + 2) < exp2.length() && exp2.charAt(fss + 2) != '+' && exp2.charAt(fss + 2) != '-') { w = w + 1; if ((fss + 3) < exp2.length() && exp2.charAt(fss + 3) != '+' && exp2.charAt(fss + 3) != '-') { w = w + 1; if ((fss + 4) < exp2.length() && exp2.charAt(fss + 4) != '+' && exp2.charAt(fss + 4) != '-') { w = w + 1; } } } a2 = Integer.parseInt(exp2.substring(fss + 1, fss + 2 + ww + w)); exp2 = (a2 + a1) + exp2.substring(fss + 2 + w + ww, exp2.length()); fss = 0; if (exp.length() < 2) break; } else if (exp2.charAt(fss) == '-') { if ((fss < exp.length()) && exp2.charAt(fss) == '-') { b = 0;// 符号后面的数字长度-1 bb = 0;// 为0说明符号后面的数为负数，1 为正数 w = 0;// w用来表示符号前面打数字打位数-1 ww = 0;// ww为0说明算术符号前面的数是正数，为1说明是负数 if (exp2.charAt(0) == '-') bb = bb + 1; b = fss - bb; a1 = Integer.parseInt(exp2.substring(0, fss)); if (exp2.charAt(fss + 1) == '-') ww = ww + 1; if ((fss + 2 + ww) < exp2.length() && exp2.charAt(fss + 2 + ww) != '+' && exp2.charAt(fss + 2 + ww) != '-') { w = w + 1; if ((fss + 3 + ww) < exp2.length() && exp2.charAt(fss + 3 + ww) != '+' && exp2.charAt(fss + 3 + ww) != '-') w = w + 1; } a2 = Integer.parseInt(exp2.substring(fss + 1 + ww, fss + 2 + ww + w)); exp2 = (a1 - a2) + exp2.substring(fss + 2 + w + ww, exp2.length()); fss = 0; if (exp.length() < 2) break; } } } } return exp2; } }
package GUI; import java.util.Random; public class CreateExp { public static String CreateAtith(int r1, int leval) { Random random = new Random(); String[] array = { "+", "-", "*", "÷" }; String exp = ""; int f;// 符号个数 if (leval == 0) { f = 1; } else { f = random.nextInt(2) + 2; } int w = 5; int s = 0; int ff = 0; int m = 4; if (f > 1) { w = random.nextInt(f);// 随机一个符号生成的位置 } ff = random.nextInt(m); if (w == 0 && ff < 2) { exp = exp + ('('); s++; } exp = exp + (random.nextInt(r1) + 1); for (int i = 0; i < f; i++) { exp = exp + (array[ff]); if (ff > 2) i = 5; m = 3; ff = random.nextInt(m); // 判断加括号打位置，如果后面符号为"*", "÷",则不加括号 if (s == 0 && i == (w - 1) && ff < 2) { exp = exp + ('('); s++; } exp = exp + (random.nextInt(r1) + 1); if (s == 1 && i == w) { exp = exp + (')'); s++; } } return exp; } }
package GUI; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStreamWriter; import java.io.UnsupportedEncodingException; public class FileInOut { // 获取历史记录，返回数组第1个是对的题数，第2个是错的题数 public int[] getrecord() throws IOException { int[] arr = new int[2]; String[] strRead = new String[3]; File userinfo = new File("Record.txt"); try { InputStream in = new FileInputStream(userinfo);// 文件对象 InputStreamReader read; read = new InputStreamReader(in, "GBK");// 设置读取格式 BufferedReader reader = new BufferedReader(read); for (int i = 0; i < 3; i++) { strRead[i] = reader.readLine(); } } catch (UnsupportedEncodingException e) { e.printStackTrace(); System.out.println("读文件入出错"); } arr[0] = Integer.parseInt(strRead[1]); arr[1] = Integer.parseInt(strRead[2]); return arr; } // 重写记录文件Record.txt public void recompose(int[] in) { try { FileOutputStream out = new FileOutputStream("Record.txt"); OutputStreamWriter outWriter = new OutputStreamWriter(out, "GBK"); BufferedWriter bufWrite = new BufferedWriter(outWriter); bufWrite.write("对错记录:第二行是对的题数、第三行是错的题数\r\n"); for (int i = 0; i < in.length; i++) bufWrite.write(in[i] + "\r\n"); bufWrite.close(); outWriter.close(); out.close(); } catch (Exception e) { e.printStackTrace(); System.out.println("写入出错"); } } }
package GUI; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.BufferedReader; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.FileReader; import java.io.IOException; import java.io.PrintWriter; import java.util.ArrayList; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JTextArea; //主窗口 public class GUIcalculator extends JFrame implements ActionListener { int language;// 记录选择的语言 JTextArea quesNumJTA = new JTextArea(1, 10); JTextArea answerJTA = new JTextArea(1, 10); JPanel panel = new JPanel(); JPanel languageChoJP = new JPanel(); JPanel quseNumJP = new JPanel(); JPanel difficultyChooseJP = new JPanel(); JPanel answerJP = new JPanel(); JPanel nextJP = new JPanel(); JPanel countJP = new JPanel(); JPanel warningJP = new JPanel(); JLabel numQuizJL = new JLabel("how many questions u want test?"); JLabel difficultyQuizJL = new JLabel("easy or difficult?"); JLabel showQuestionJL = new JLabel();// 放题目label JLabel resultJudgeJL = new JLabel(); JLabel showCountJL = new JLabel(); JLabel warningJL = new JLabel(); JButton sureJB = new JButton("sure"); JButton easyJB = new JButton("easy"); JButton difficultJB = new JButton("difficult"); JButton nextJB = new JButton("next"); JButton submitJB = new JButton("submit"); JButton reenterJB = new JButton("reenter"); JButton chineseJB = new JButton("中文"); JButton englishJB = new JButton("English"); int trueCount = 0;// 正确题数 int failCount = 0;// 错误题数 String questNum;// 题目数量String类型 int expNum;// 题目数量int类型 int explevel;// 记录表达式难度级别 int expdone = 1;// int done = 0;//记录已经计算的题目 long startTime;//结束时间 long endTime;//开始时间 CreateExp create = new CreateExp();// CountExp count = new CountExp();// String[] exparr = null;// 放题目的数组 String[] expanswer = null;// 放答案的数组 // 主界面 public GUIcalculator() { super("四则运算"); setSize(500, 500); setLocation(450, 350); super.setResizable(false); // 放题目的控件 quesNumJTA.setText(""); answerJTA.setText(""); sureJB.setActionCommand("sure"); sureJB.addActionListener(this); easyJB.setActionCommand("easy"); easyJB.addActionListener(this); difficultJB.setActionCommand("difficult"); difficultJB.addActionListener(this); nextJB.setActionCommand("next"); nextJB.addActionListener(this); submitJB.setActionCommand("submit"); submitJB.addActionListener(this); reenterJB.setActionCommand("reenter"); reenterJB.addActionListener(this); chineseJB.setActionCommand("chinese"); chineseJB.addActionListener(this); englishJB.setActionCommand("english"); englishJB.addActionListener(this); languageChoJP.add(chineseJB); languageChoJP.add(englishJB); // 题目 +答案框+确定按钮 quseNumJP.add(numQuizJL); quseNumJP.add(quesNumJTA); quseNumJP.add(sureJB); getContentPane().add(panel); panel.add(languageChoJP); difficultyChooseJP.add(difficultyQuizJL); difficultyChooseJP.add(easyJB); difficultyChooseJP.add(difficultJB); answerJP.add(showQuestionJL); answerJP.add(answerJTA); answerJP.add(submitJB); nextJP.add(resultJudgeJL); nextJP.add(nextJB); countJP.add(showCountJL); warningJP.add(warningJL); warningJP.add(reenterJB); } // 重绘窗口 public void panelRepaint(JPanel a, JPanel b, JPanel c) { a.remove(b); a.add(c); a.revalidate(); a.repaint(); } // 点击事件 @Override public void actionPerformed(ActionEvent e) { if (e.getActionCommand().equals("chinese")) {// 设置控件文字为中文 language = 0; numQuizJL.setText("你想测试多少题？"); difficultyQuizJL.setText("你想测试的难易程度？"); warningJL.setText("请输入一个大于0的整数！！"); sureJB.setText("确定"); easyJB.setText("容易"); difficultJB.setText("难"); nextJB.setText("继续"); submitJB.setText("提交"); reenterJB.setText("重新输入"); panelRepaint(panel, languageChoJP, quseNumJP); } // 设置控件文字为英文 if (e.getActionCommand().equals("english")) { language = 1; numQuizJL.setText("how many questions u want test?"); difficultyQuizJL.setText("easy or difficult?"); warningJL.setText("please enter a number greater than 0!!"); sureJB.setText("sure"); easyJB.setText("easy"); difficultJB.setText("difficult"); nextJB.setText("next"); submitJB.setText("subnit"); reenterJB.setText("reenter"); panelRepaint(panel, languageChoJP, quseNumJP); } // 点确定，确定题目数量 if (e.getActionCommand().equals("sure")) { this.questNum = quesNumJTA.getText();// 记录题目数量 this.expNum = Integer.parseInt(questNum); if (!questNum.matches("[0-9]*[1-9][0-9]*")) {// 匹配输入的是否有错误 panelRepaint(panel, quseNumJP, warningJP); } else { panelRepaint(panel, quseNumJP, difficultyChooseJP); } } // 点容易，确定题目难度为容易， if (e.getActionCommand().equals("easy")) { startTime = System.currentTimeMillis();// 记录开始时间 exparr = new String[expNum+1]; expanswer = new String[expNum+1]; // 循环生成题目和答案 for (int j = 0; j < expNum; j++) { String expression = create.CreateAtith(9,0); exparr[j] = expression; expanswer[j] = count.countAnswer(expression); System.out.print(expression + "="); System.out.println(count.countAnswer(expression)); } showQuestionJL.setText(exparr[done]); panelRepaint(panel, difficultyChooseJP, answerJP); } // 点困难，确定题目难度为困难 if (e.getActionCommand().equals("difficult")) { startTime = System.currentTimeMillis(); exparr = new String[expNum+1]; expanswer = new String[expNum+1]; // 循环生成题目和答案 for (int j = 0; j < expNum; j++) { String expression = create.CreateAtith(30,1); exparr[j] = expression; expanswer[j] = count.countAnswer(expression); System.out.print(expression + "="); System.out.println(count.countAnswer(expression)); } showQuestionJL.setText(exparr[done]); panelRepaint(panel, difficultyChooseJP, answerJP); } // 点下一题，判断是否完成所有题目 if (e.getActionCommand().equals("next")) { if (expdone < Integer.parseInt(questNum)) { expdone++; panelRepaint(panel, nextJP, answerJP); } else { // 记录结束时间 endTime = System.currentTimeMillis(); FileInOut inout = new FileInOut(); int[] in = new int[2];// 获取历史对错题记录 try { in = inout.getrecord(); } catch (IOException e1) { e1.printStackTrace(); } in[0] = in[0] + trueCount; in[1] = in[1] + failCount; if (language == 0) { showCountJL.setText("正确题数:" + trueCount + " 错误题数:" + failCount + " 用时: " + ((endTime - startTime) / 1000) + " s" + " 历史总正确题数: " + in[0] + " 历史总错误题数: " + in[1]); } else { showCountJL.setText("true:" + trueCount + " false:" + failCount + " time: " + ((endTime - startTime) / 1000) + " s" + " totaltrue: " + in[0] + " totalfalse: " + in[1]); } inout.recompose(in); panelRepaint(panel, nextJP, countJP); } } // 点提交，会判断题目对错 if (e.getActionCommand().equals("submit")) { if (answerJTA.getText().equals(expanswer[done])) { if (language == 0) { resultJudgeJL.setText("正确"); } else { resultJudgeJL.setText("true"); } done++; trueCount++; answerJTA.setText(""); showQuestionJL.setText(exparr[done]); panelRepaint(panel, answerJP, nextJP); } else { if (language == 0) { resultJudgeJL.setText("错误 ！ 正确答案为: " + expanswer[done]); } else { resultJudgeJL.setText("false correct answer is: " + expanswer[done]); } failCount++; answerJTA.setText(""); showQuestionJL.setText(exparr[done]); done++; panelRepaint(panel, answerJP, nextJP); } } } }
package GUI; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.BufferedReader; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.FileReader; import java.io.IOException; import java.io.PrintWriter; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JTextArea; public class Main { public static void main(String[] args) { GUIcalculator GUI = new GUIcalculator(); GUI.setVisible(true); } }
运行截图：
小组照片：
耗时估计：
小结：
事实证明结对编程真的是可以带来1+1>2的效果的，以前一个人写代码的时候总是会有拖延症，老是觉得还有时间不用急着写，而现在仙平会一直让我快点做，不要拖他后腿，而且两个人一起写大家可以互相帮忙，不懂的问题可以一起解决，效率可以说是高了很多。
队友评价：
可以说是一个非常棒的队友了，会催我写代码，会帮我解决不懂的问题。对待编程他特别用心，虽然一直叫脖子疼，但还是会坐到电脑前先把代码敲好，很少见他对一件事情这么认真。
代码地址：
https://coding.net/u/chenjunda/p/second/git/tree/master/ArithmeticGUI
