前言：
第七次题目集：本次题目集是菜单计价系统的一次迭代，在原有功能的基础上对输入的特色菜分为川菜，晋菜和浙菜三类，并在最后输出一桌的价格的时候还要将三种特色菜的点菜的口味程度一起输出，还要求对每位顾客的姓名和手机号进行格式的规范。本次题目需要在之前的菜单计价系统的基础之上再增加一个新的table类用来计算并存储每一桌的特色菜的口味程度，建立起table类和其他类之间的关系，还需要用正则表达式重新来规范输入的数据，来判断输入的数据是否错误，还有格式是否错误，如规定手机号和姓名。本次题目级难度较难，题量较少，较为考察逻辑思维。
第八次题目集：本次题目集为一个简单的课程成绩统计程序。本次题目集主要考察逻辑思考能力，对输入的课程，班级，学生的成绩进行整理，还要对课程，班级和学生的成绩按照不同的要求进行输出，考察代码程序对输入数据的计算和整理。数据的输入分为课程还有学生成绩两部分组成，最后以end的结束输入，程序需要用while循环来判断两个部分的输入是否结束，还需要大量地运用到正则表达式对输入的课程数据还有每位学生的成绩进行规范，还需要用spilt()函数对输入的每行的数据进行分割得到我们所需要的数据，需要在不同的类中定义处理本类的数据的方法来简化主函数，如在course类中定义一个判断输入课程数据是否合法的方法，合法就将其存入course类之中并返回true，还需运用到冒泡排序法对课程，班级和学生的输出次序进行排序，还用到了Integer.parseInt()将字符串转化为整数进行计算，本次题目集难度较难，题量较少，考察对数据的计算和整理。
第九次题目集：本次题目集为一道统计java程序中关键词的出现次数的题，需要用到Map类对出现的各个关键词的次数进行统计，需要用到stringBuilder类用来加入形成一个单词，需要使用while循环来判断输入是否结束，需要用到正则表达式对输入的格式进行规范，String类之中的replaceAll()，substring()方法，还需运用到Map类的遍历方法。本次题目集题量较少，难度中等。
第十次题目集：本次题目集主要学习和练习了HashMap的检索和排序，进行了对HsahMap类的练习，第四题则是进行了对多态的训练，而第三题则是在第八次题目集课程成绩统计程序的基础上进行迭代，在之前的必修课和选修课的基础上加上了一个实验课，并且实验课的成绩计算方式不同于必修课和选修课，本次题目集可在之前的基础上增加一个新的实验类来计算实验课的成绩，需要用正则表达式来判断输入的实验课次数是否合法还有与要求的是否对应，本次题目集题量中等，难度偏高，但在第八次题目集已经打好了基础，代码量较少。
第十一次题目集：本次题目集主要练习了ArrayList-排序还有Map类对数据的整理和排序，还有自定义栈接口对栈的使用，以及现在需要定义PersonOverride类并覆盖其toString与equals方法，最后第二题为课程成绩统计程序-3在第二次的基础上修改了计算总成绩的方式，需要修改类结构，将成绩类的继承关系改为组合关系，使用分值和权重的计算方法，考察了重构的能力，本次题目集题量较多，难度较难。
题目集七7-1 菜单计价程序-5
1 import java.time.DayOfWeek; 2 import java.time.LocalDate; 3 import java.time.LocalDateTime; 4 import java.time.LocalTime; 5 import java.util.ArrayList; 6 import java.util.Scanner; 7 8 public class Main { 9 public static void main(String[] args) { 10 double discount = 1; 11 int number; 12 Customers customers = new Customers(); 13 Menu newMenu = new Menu(); 14 Scanner input = new Scanner(System.in); 15 String string = input.nextLine(); 16 while (string.charAt(0) != 't') {//录入菜单 17 if (string.charAt(string.length() - 1) == 'T') {//特色菜情况 18 String[] str = string.split(" "); 19 if (str[1].contains(".")) { 20 System.out.println("wrong format"); 21 } else if (str.length != 4) { 22 System.out.println("wrong format"); 23 } else if (!str[2].matches("^\\+?[1-9][0-9]*$+")) { 24 System.out.println("wrong format"); 25 } else if (Integer.parseInt(str[2]) < 0 || Integer.parseInt(str[2]) >= 300) {//判断菜价有没有超过范围 26 System.out.println(str[0] + " price out of range " + Integer.parseInt(str[2])); 27 } else if (str[2].charAt(0) == '0') {//判断最高位是不是以0开头 28 System.out.println("wrong format"); 29 } else 30 newMenu.addDish(str[0], Integer.parseInt(str[2]), str[1]); 31 } else {//普通菜情况 32 String[] str = string.split(" "); 33 if (str[1].contains(".")) { 34 System.out.println("wrong format"); 35 } else if (str.length != 2) { 36 System.out.println("wrong format"); 37 } else if (!str[1].matches("^\\+?[1-9][0-9]*$+")) { 38 System.out.println("wrong format"); 39 } else if (Integer.parseInt(str[1]) < 0 || Integer.parseInt(str[1]) >= 300) {//判断菜价有没有超过范围 40 System.out.println(str[0] + " price out of range " + Integer.parseInt(str[1])); 41 } else if (str[0].charAt(0) == '0') {//判断最高位是不是以0开头 42 System.out.println("wrong format"); 43 } else 44 newMenu.addDish(str[0], Integer.parseInt(str[1]), "普通菜"); 45 } 46 string = input.nextLine(); 47 } 48 ArrayList<Table> recordTable = new ArrayList<>(); 49 while (string.compareTo("end") != 0) {//判断是否结束 50 ArrayList<Integer> helpOrderNum = new ArrayList<>(); 51 ArrayList<Integer> helpOrderTable = new ArrayList<>(); 52 int judgeTimeMater = 0; 53 int sum = 0; 54 int sum1 = 0; 55 String[] str = string.split(" ");//将string中的数据分开存到str中 56 if (str[0].compareTo("table") == 0 && (!(str[1].matches("^\\+?[1-9][0-9]*$+")) || str[1].charAt(0) == '0') || str.length != 7) {//判断桌号出现非数值情况 57 System.out.println("wrong format");//输出报错 58 string = input.nextLine();//输入 59 while (string.charAt(0) != 't') {//判断输入是否为新的一桌，是的话跳出循环 60 string = input.nextLine();//输入 61 if (string.compareTo("end") == 0) {//判断是否结束 62 System.exit(1);//退出程序 63 } 64 } 65 } else if (str[0].compareTo("table") == 0 && Integer.parseInt(str[1]) > 55) {//判断桌号大于55的情况 66 System.out.println(Integer.parseInt(str[1]) + " table num out of range"); 67 string = input.nextLine(); 68 while (string.charAt(0) != 't' || string.compareTo("end") != 0) {//判断输入是否为新的一桌，是的话跳出循环 69 string = input.nextLine();//输入 70 if (string.compareTo("end") == 0) {//判断是否结束 71 System.exit(1);//退出程序 72 } 73 } 74 } else if (str[0].compareTo("table") == 0 && (str[1].matches("[1-9][0-5]") || str[1].matches("[1-9]"))) { 75 ArrayList<Integer> deleteOrder = new ArrayList<>(); 76 String[] time1 = str[5].split("/"); //将年，月，日的信息分开来传入到time1字符串数组中 77 String[] time2 = str[6].split("/"); //将时，分，秒的信息分开来传入到time2字符串数组中 78 if (!(time1[0].length() == 4 && (time1[1].length() == 1 || time1[1].length() == 2) && (time1[2].length() == 1 || time1[2].length() == 2) && (time2[0].length() == 1 || time2[0].length() == 2) && (time2[1].length() == 1 || time2[1].length() == 2) && (time2[2].length() == 1 || time2[2].length() == 2))) { 79 System.out.print("wrong format");//判断输入的时间格式是否合法 80 string = input.nextLine();//录入新一桌的信息 81 while (string.compareTo("end") != 0 && string.charAt(0) != 't') { 82 string = input.nextLine(); 83 } 84 judgeTimeMater = 1; 85 } else if (!(Integer.parseInt(time1[0]) > 1000 && (Integer.parseInt(time1[1]) <= 12 && Integer.parseInt(time1[1]) >= 1) && (Integer.parseInt(time1[2]) >= 1 && Integer.parseInt(time1[2]) <= 31) && (Integer.parseInt(time2[0]) >= 0 && Integer.parseInt(time2[0]) < 24) && (Integer.parseInt(time2[1]) >= 0 && Integer.parseInt(time2[1]) <= 60) && (Integer.parseInt(time2[2]) >= 0 && Integer.parseInt(time2[2]) <= 60))) { 86 System.out.print(Integer.parseInt(str[1]) + " date error");//判断输入的时间数据是否非法 87 string = input.nextLine();//录入新一桌的信息 88 while (string.compareTo("end") != 0 && string.charAt(0) != 't') { 89 string = input.nextLine(); 90 } 91 judgeTimeMater = 1; 92 } 93 if (judgeTimeMater == 0) { 94 LocalDateTime orderTime = LocalDateTime.of(Integer.parseInt(time1[0]), Integer.parseInt(time1[1]), Integer.parseInt(time1[2]), Integer.parseInt(time2[0]), Integer.parseInt(time2[1]), Integer.parseInt(time2[2])); 95 LocalDate restaurantStart = LocalDate.of(2022, 1, 1); //时间有效开始 96 LocalDate restaurantEnd = LocalDate.of(2023, 12, 31);//时间有结束 97 LocalDate eatTime = orderTime.toLocalDate(); //就餐时间 98 LocalTime weekStartTime = LocalTime.of(9, 29, 59); 99 LocalTime weekEndTime = LocalTime.of(21, 30, 01); 100 LocalTime NotweekStartMorningTime = LocalTime.of(10, 29, 59); 101 LocalTime NotweekStartTAfternoonTime = LocalTime.of(16, 59, 59); 102 LocalTime NotweekEndMorningTime = LocalTime.of(14, 30, 01); 103 LocalTime NotweekEndAfternoonTime = LocalTime.of(20, 30, 01); 104 LocalTime eatTime1 = orderTime.toLocalTime(); //就餐时间 105 if (((!(orderTime.getDayOfWeek() == DayOfWeek.SUNDAY || orderTime.getDayOfWeek() == DayOfWeek.SATURDAY)) && ((!(eatTime1.isAfter(NotweekStartMorningTime) && eatTime1.isBefore(NotweekEndMorningTime))) && (!(eatTime1.isAfter(NotweekStartTAfternoonTime) && eatTime1.isBefore(NotweekEndAfternoonTime))))) || ((orderTime.getDayOfWeek() == DayOfWeek.SUNDAY || orderTime.getDayOfWeek() == DayOfWeek.SATURDAY) && (!(eatTime1.isAfter(weekStartTime) && eatTime1.isBefore(weekEndTime))))) { 106 System.out.println("table " + Integer.parseInt(str[1]) + " out of opening hours"); 107 string = input.nextLine();//录入新一桌的信息 108 while (string.compareTo("end") != 0 && string.charAt(0) != 't') { 109 string = input.nextLine(); 110 } 111 } else if (str[3].length() > 10 || str[4].length() != 11 || !str[4].matches("^(180|181|189|133|135|136)\\d{8}$")) { 112 System.out.println("wrong format"); 113 string = input.nextLine();//录入新一桌的信息 114 while (string.compareTo("end") != 0 && string.charAt(0) != 't') { 115 string = input.nextLine(); 116 } 117 } else { 118 Table newTable = new Table(); 119 newTable.setTableNum(Integer.parseInt(str[1])); 120 recordTable.add(newTable); 121 customers.addCustomer(str[3], str[4]); 122 double singlePrice = 0; 123 System.out.println("table " + Integer.parseInt(str[1]) + ": "); //输出 124 newTable.setTableNum(Integer.parseInt(str[1])); 125 if (!(orderTime.getDayOfWeek() == DayOfWeek.SUNDAY || orderTime.getDayOfWeek() == DayOfWeek.SATURDAY)) {//判断是周一到周五还是周末来赋予相应折扣 126 discount = 0.7; 127 } 128 String orderMessage; 129 orderMessage = input.nextLine(); //录入一条订单的信息 130 number = 0; //以判断订单号是否是顺序的 131 Order newOrder = new Order(); //创建一个新的订单信息 132 int judgeTableMater = 0; 133 while ((orderMessage.charAt(0) != 't' && orderMessage.charAt(0) != 'e') || judgeTableMater == 1) { //判断订单号是否结束 134 judgeTableMater = 0; 135 String[] orderMessage1 = orderMessage.split(" ");//将一条订单的各种信息分开 136 if (orderMessage1.length >= 5 && orderMessage1[1].matches("^\\+?[1-9][0-9]*$+")) {//代点菜 137 helpOrderNum.add(Integer.parseInt(orderMessage1[1])); 138 helpOrderTable.add(Integer.parseInt(orderMessage1[0])); 139 orderMessage = input.nextLine(); 140 if(orderMessage1.length==6) { 141 newOrder.addARecord(Integer.parseInt(orderMessage1[1]), orderMessage1[2], Integer.parseInt(orderMessage1[4]),Integer.parseInt(orderMessage1[5]),Integer.parseInt(orderMessage1[3])); 142 } else if (orderMessage1.length==5) { 143 newOrder.addARecord(Integer.parseInt(orderMessage1[1]), orderMessage1[2], Integer.parseInt(orderMessage1[3]),Integer.parseInt(orderMessage1[4])); 144 } 145 } else { 146 if (!(orderMessage1[0].matches("[1-9]"))) { //判断是否订单录入菜单 147 System.out.println("invalid dish"); 148 orderMessage = input.nextLine(); //录入一条订单的信息 149 } else if (orderMessage1[1].compareTo("delete") != 0 && orderMessage1.length == 5) { 150 newOrder.addARecord(Integer.parseInt(orderMessage1[0]), orderMessage1[1], Integer.parseInt(orderMessage1[3]), Integer.parseInt(orderMessage1[4]), Integer.parseInt(orderMessage1[2]));//将订单信息传入到newOrder中 151 orderMessage = input.nextLine(); 152 } else if (orderMessage1[1].compareTo("delete") != 0 && orderMessage1.length == 4) { 153 newOrder.addARecord(Integer.parseInt(orderMessage1[0]), orderMessage1[1], Integer.parseInt(orderMessage1[2]), Integer.parseInt(orderMessage1[3]));//将订单信息传入到newOrder中 154 orderMessage = input.nextLine(); 155 } 156 String[] orderMessage2 = orderMessage.split(" "); 157 if ((orderMessage2[0].compareTo("table") != 0 && !(orderMessage2[0].matches("[1-9]"))) && orderMessage.compareTo("end") != 0) { 158 orderMessage = input.nextLine(); 159 judgeTableMater = 1; 160 } 161 while (orderMessage.charAt(0) != 'e' && orderMessage.charAt(2) == 'd') { 162 deleteOrder.add(Integer.parseInt(orderMessage2[0])); 163 orderMessage = input.nextLine(); 164 orderMessage2 = orderMessage.split(" "); 165 if (orderMessage.compareTo("end") == 0) { 166 break; 167 } 168 } 169 } 170 } 171 for (int j = 1; j <= newOrder.getRecords().size(); j++) {//遍历newOrder中的每一条记录 172 ArrayList<Dish> dishNew = newMenu.getDishs();//将newMenu中的dishs信息放到dishNew中以遍历 173 if (1 == 1) { 174 for (int i = 0; i < newMenu.getDishs().size(); i++) {//将一条订单与菜单匹配 175 int recordHelpNum = 0; 176 int judgeHelpOrder = 0; 177 if (dishNew.get(i).getName().compareTo(newOrder.getRecords().get(j - 1).getD().getName()) == 0) { 178 newOrder.getRecords().get(j - 1).setD(dishNew.get(i)); 179 if ((newOrder.getRecords().get(j - 1).getPortion() > 3 && newOrder.getRecords().get(j - 1).getPortion() <= 9)) {//普通菜份额超出范围 180 System.out.println(newOrder.getRecords().get(j - 1).getOrderNum() + " portion out of range " + newOrder.getRecords().get(j - 1).getPortion()); 181 } else if (newOrder.getRecords().get(j - 1).getPortion() > 9) { 182 System.out.println("wrong format"); //份额非法输入 183 } else if (newOrder.getRecords().get(j - 1).getNum() > 15) { 184 System.out.println(newOrder.getRecords().get(j - 1).getOrderNum() + " num out of range " + newOrder.getRecords().get(j - 1).getNum());//份数超出范围 185 } else { 186 int existTable = 1; 187 int deleteOrderMater = 0; 188 for (recordHelpNum = 0; recordHelpNum < helpOrderNum.size(); recordHelpNum++) { 189 if (helpOrderNum.get(recordHelpNum) == newOrder.getRecords().get(j - 1).getOrderNum()) { 190 judgeHelpOrder = 1; 191 for (int k = 0; k < recordTable.size(); k++) { 192 if (recordTable.get(k).getTableNum() == helpOrderTable.get(recordHelpNum)) { 193 existTable = 0; 194 } 195 if (k == recordTable.size() - 1 && existTable == 1) { 196 existTable = 2; 197 } 198 } 199 break; 200 } 201 } 202 if (existTable == 2) { 203 System.out.println("wrong format"); 204 } else { 205 if (judgeHelpOrder == 1) { 206 System.out.println(newOrder.getRecords().get(j - 1).getOrderNum() + " " + "table " + str[1] + " pay for table " + helpOrderTable.get(recordHelpNum) + " " + Math.round(newOrder.getRecords().get(j - 1).getPrice())); 207 } 208 for (int l = 0; l < deleteOrder.size(); l++) { 209 if (deleteOrder.get(l) == newOrder.getRecords().get(j - 1).getOrderNum()) { 210 deleteOrderMater = 1; 211 break; 212 } 213 } 214 int k=-1; 215 int judgeDegree=1; 216 int table=0; 217 if(helpOrderNum.size()>0) { 218 k=0; 219 for (int l = 0, o = 0; l < helpOrderNum.size(); l++) { 220 if (helpOrderNum.get(k) == newOrder.getRecords().get(j - 1).getOrderNum()) { 221 k = l; 222 o = 1; 223 } 224 if (o != 1 && l == helpOrderNum.size() - 1) { 225 k = -1; 226 } 227 } 228 if (k != -1) { 229 for (int l = 0; l < recordTable.size(); l++) { 230 if (recordTable.get(l).getTableNum() == helpOrderTable.get(k)) { 231 table = l; 232 } 233 } 234 } 235 } 236 if (!(orderTime.getDayOfWeek() == DayOfWeek.SUNDAY || orderTime.getDayOfWeek() == DayOfWeek.SATURDAY)) { 237 if (!(newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("普通菜"))) { 238 singlePrice = Math.round(newOrder.getRecords().get(j - 1).getPrice()) * 0.7; 239 if (newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("川菜") && newOrder.getRecords().get(j - 1).getDegree() >= 0 && newOrder.getRecords().get(j - 1).getDegree() <= 5) { 240 if (k != -1) { 241 recordTable.get(table).setSichuanDegree(recordTable.get(table).getSichuanDegree() + newOrder.getRecords().get(j - 1).getDegree() * newOrder.getRecords().get(j - 1).getNum()); 242 recordTable.get(table).setSichuanNum(recordTable.get(table).getSichuanNum() + 1 * newOrder.getRecords().get(j - 1).getNum()); 243 } else if (k == -1) { 244 recordTable.get(recordTable.size() - 1).setSichuanDegree(recordTable.get(recordTable.size() - 1).getSichuanDegree() + newOrder.getRecords().get(j - 1).getDegree() * newOrder.getRecords().get(j - 1).getNum()); 245 recordTable.get(recordTable.size() - 1).setSichuanNum(recordTable.get(recordTable.size() - 1).getSichuanNum() + 1 * newOrder.getRecords().get(j - 1).getNum()); 246 } 247 if (k == -1) { 248 System.out.println(newOrder.getRecords().get(j - 1).getOrderNum() + " " + newOrder.getRecords().get(j - 1).getD().getName() + " " + Math.round(newOrder.getRecords().get(j - 1).getPrice())); 249 } 250 }else if (newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("川菜") && (newOrder.getRecords().get(j - 1).getDegree() < 0 || newOrder.getRecords().get(j - 1).getDegree() > 5)) { 251 singlePrice=0; 252 judgeDegree=0; 253 System.out.println("spicy num out of range :" + newOrder.getRecords().get(j - 1).getDegree()); 254 } 255 if (newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("晋菜") && newOrder.getRecords().get(j - 1).getDegree() >= 0 && newOrder.getRecords().get(j - 1).getDegree() <= 4) { 256 if (k != -1) { 257 recordTable.get(table).setJinDegree(recordTable.get(table).getJinDegree() + newOrder.getRecords().get(j - 1).getDegree() * newOrder.getRecords().get(j - 1).getNum()); 258 recordTable.get(table).setJinNum(recordTable.get(table).getJinNum() + 1 * newOrder.getRecords().get(j - 1).getNum()); 259 } else if (k == -1) { 260 recordTable.get(recordTable.size() - 1).setJinDegree(recordTable.get(recordTable.size() - 1).getJinDegree() + newOrder.getRecords().get(j - 1).getDegree() * newOrder.getRecords().get(j - 1).getNum()); 261 recordTable.get(recordTable.size() - 1).setJinNum(recordTable.get(recordTable.size() - 1).getJinNum() + 1 * newOrder.getRecords().get(j - 1).getNum()); 262 } 263 if (k == -1) { 264 System.out.println(newOrder.getRecords().get(j - 1).getOrderNum() + " " + newOrder.getRecords().get(j - 1).getD().getName() + " " + Math.round(newOrder.getRecords().get(j - 1).getPrice())); 265 } 266 }else if (newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("晋菜") && (newOrder.getRecords().get(j - 1).getDegree() < 0 || newOrder.getRecords().get(j - 1).getDegree() > 4)) { 267 singlePrice=0; 268 judgeDegree=0; 269 System.out.println("acidity num out of range :" + newOrder.getRecords().get(j - 1).getDegree()); 270 } 271 if (newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("浙菜") && newOrder.getRecords().get(j - 1).getDegree() >= 0 && newOrder.getRecords().get(j - 1).getDegree() <= 3) { 272 if (k != -1) { 273 recordTable.get(table).setZheDegree(recordTable.get(table).getZheDegree() + newOrder.getRecords().get(j - 1).getDegree() * newOrder.getRecords().get(j - 1).getNum()); 274 recordTable.get(table).setZheNum(recordTable.get(table).getZheNum() + 1 * newOrder.getRecords().get(j - 1).getNum()); 275 } else if (k == -1) { 276 recordTable.get(recordTable.size() - 1).setZheDegree(recordTable.get(recordTable.size() - 1).getZheDegree() + newOrder.getRecords().get(j - 1).getDegree() * newOrder.getRecords().get(j - 1).getNum()); 277 recordTable.get(recordTable.size() - 1).setZheNum(recordTable.get(recordTable.size() - 1).getZheNum() + 1 * newOrder.getRecords().get(j - 1).getNum()); 278 } 279 if (k == -1) { 280 System.out.println(newOrder.getRecords().get(j - 1).getOrderNum() + " " + newOrder.getRecords().get(j - 1).getD().getName() + " " + Math.round(newOrder.getRecords().get(j - 1).getPrice())); 281 } 282 }else if (newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("浙菜") && (newOrder.getRecords().get(j - 1).getDegree() < 0 || newOrder.getRecords().get(j - 1).getDegree() > 3)) { 283 System.out.println("sweetness num out of range :" + newOrder.getRecords().get(j - 1).getDegree()); 284 singlePrice=0; 285 judgeDegree=0; 286 } 287 } else if ((newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("普通菜")) && (eatTime1.isAfter(NotweekStartTAfternoonTime) && eatTime1.isBefore(NotweekEndAfternoonTime))) { 288 singlePrice = Math.round(newOrder.getRecords().get(j - 1).getPrice()) * 0.8; 289 if (k == -1) { 290 System.out.println(newOrder.getRecords().get(j - 1).getOrderNum() + " " + newOrder.getRecords().get(j - 1).getD().getName() + " " + Math.round(newOrder.getRecords().get(j - 1).getPrice())); 291 } 292 }else if (newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("普通菜") && (eatTime1.isAfter(NotweekStartMorningTime) && eatTime1.isBefore(NotweekEndMorningTime))) { 293 singlePrice = Math.round(newOrder.getRecords().get(j - 1).getPrice()) * 0.6; 294 if (k == -1) { 295 System.out.println(newOrder.getRecords().get(j - 1).getOrderNum() + " " + newOrder.getRecords().get(j - 1).getD().getName() + " " + Math.round(newOrder.getRecords().get(j - 1).getPrice())); 296 } 297 } 298 } else { 299 if (!(newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("普通菜"))) { 300 singlePrice = Math.round(newOrder.getRecords().get(j - 1).getPrice()); 301 if (newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("川菜") && newOrder.getRecords().get(j - 1).getDegree() >= 0 && newOrder.getRecords().get(j - 1).getDegree() <= 5) { 302 recordTable.get(recordTable.size() - 1).setSichuanDegree(recordTable.get(recordTable.size() - 1).getSichuanDegree() + newOrder.getRecords().get(j - 1).getDegree() * newOrder.getRecords().get(j - 1).getNum()); 303 recordTable.get(recordTable.size() - 1).setSichuanNum(recordTable.get(recordTable.size() - 1).getSichuanNum() + 1 * newOrder.getRecords().get(j - 1).getNum()); 304 if (k == -1) { 305 System.out.println(newOrder.getRecords().get(j - 1).getOrderNum() + " " + newOrder.getRecords().get(j - 1).getD().getName() + " " + Math.round(newOrder.getRecords().get(j - 1).getPrice())); 306 } 307 }else if (newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("川菜") && (newOrder.getRecords().get(j - 1).getDegree() < 0 || newOrder.getRecords().get(j - 1).getDegree() > 5)) { 308 System.out.println("spicy num out of range :" + newOrder.getRecords().get(j - 1).getDegree()); 309 singlePrice=0; 310 judgeDegree=0; 311 } 312 if (newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("晋菜") && newOrder.getRecords().get(j - 1).getDegree() >= 0 && newOrder.getRecords().get(j - 1).getDegree() <= 4) { 313 recordTable.get(recordTable.size() - 1).setJinDegree(recordTable.get(recordTable.size() - 1).getJinDegree() + newOrder.getRecords().get(j - 1).getDegree()*newOrder.getRecords().get(j-1).getNum()); 314 recordTable.get(recordTable.size() - 1).setJinNum(recordTable.get(recordTable.size() - 1).getJinNum() + 1*newOrder.getRecords().get(j-1).getNum()); 315 if(k==-1){ 316 System.out.println(newOrder.getRecords().get(j - 1).getOrderNum() + " " + newOrder.getRecords().get(j - 1).getD().getName() + " " + Math.round(newOrder.getRecords().get(j - 1).getPrice())); 317 } 318 } else if (newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("晋菜") && (newOrder.getRecords().get(j - 1).getDegree() < 0 || newOrder.getRecords().get(j - 1).getDegree() > 4)) { 319 System.out.println("acidity num out of range :" + newOrder.getRecords().get(j - 1).getDegree()); 320 singlePrice=0; 321 judgeDegree=0; 322 } 323 if (newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("浙菜") && newOrder.getRecords().get(j - 1).getDegree() >= 0 && newOrder.getRecords().get(j - 1).getDegree() <= 3) { 324 recordTable.get(recordTable.size() - 1).setZheDegree(recordTable.get(recordTable.size() - 1).getZheDegree() + newOrder.getRecords().get(j - 1).getDegree()*newOrder.getRecords().get(j-1).getNum()); 325 recordTable.get(recordTable.size() - 1).setZheNum(recordTable.get(recordTable.size() - 1).getZheNum() + 1*newOrder.getRecords().get(j-1).getNum()); 326 if(k==-1){ 327 System.out.println(newOrder.getRecords().get(j - 1).getOrderNum() + " " + newOrder.getRecords().get(j - 1).getD().getName() + " " + Math.round(newOrder.getRecords().get(j - 1).getPrice())); 328 } 329 } else if (newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("浙菜") && (newOrder.getRecords().get(j - 1).getDegree() < 0 || newOrder.getRecords().get(j - 1).getDegree() > 3)) { 330 System.out.println("sweetness num out of range :" + newOrder.getRecords().get(j - 1).getDegree()); 331 singlePrice=0; 332 judgeDegree=0; 333 } 334 } else if ((newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("普通菜")) && (eatTime1.isAfter(NotweekStartTAfternoonTime) && eatTime1.isBefore(NotweekEndAfternoonTime))) { 335 singlePrice = Math.round(newOrder.getRecords().get(j - 1).getPrice()); 336 if(k==-1){ 337 System.out.println(newOrder.getRecords().get(j - 1).getOrderNum() + " " + newOrder.getRecords().get(j - 1).getD().getName() + " " + Math.round(newOrder.getRecords().get(j - 1).getPrice())); 338 } 339 } else if (newOrder.getRecords().get(j - 1).getD().getSpecialty().equals("普通菜") && (eatTime1.isAfter(NotweekStartMorningTime) && eatTime1.isBefore(NotweekEndMorningTime))) { 340 singlePrice = Math.round(newOrder.getRecords().get(j - 1).getPrice()); 341 if(k==-1){ 342 System.out.println(newOrder.getRecords().get(j - 1).getOrderNum() + " " + newOrder.getRecords().get(j - 1).getD().getName() + " " + Math.round(newOrder.getRecords().get(j - 1).getPrice())); 343 } 344 } 345 } 346 if (deleteOrderMater == 1) { 347 break; 348 } 349 sum = Math.round((float) singlePrice) + sum; 350 sum1 = sum1 + Math.round(newOrder.getRecords().get(j - 1).getPrice()*judgeDegree); 351 } 352 } 353 break; 354 } 355 if (dishNew.get(i).getName().compareTo(newOrder.getRecords().get(j - 1).getD().getName()) != 0 && i == newMenu.getDishs().size() - 1) { //输出菜单中不存在订单菜品的情况 356 System.out.println(newOrder.getRecords().get(j - 1).getD().getName() + " does not exist"); 357 } 358 } 359 if (number < newOrder.getRecords().get(j - 1).getOrderNum()) { 360 number = newOrder.getRecords().get(j - 1).getOrderNum(); //记录当前的订单的序号 361 } 362 } 363 } 364 for (int i = 0; i < deleteOrder.size(); i++) { 365 for (int k = 0; k < newOrder.getRecords().size(); k++) { 366 if (deleteOrder.get(i) == newOrder.getRecords().get(k).getOrderNum()) { 367 break; 368 } 369 if (k == newOrder.getRecords().size() - 1) { 370 System.out.println("delete error;"); 371 } 372 } 373 for (int j = i - 1; j >= 0; j--) { 374 if (deleteOrder.get(i) == deleteOrder.get(j)) { 375 System.out.println("deduplication " + deleteOrder.get(i)); 376 } 377 } 378 } 379 string = orderMessage; 380 recordTable.get(recordTable.size() - 1).setTableSumPrice(sum); 381 recordTable.get(recordTable.size() - 1).setTableSumPrice1(sum1); 382 customers.calculatePrice(str[3], str[4], sum); 383 } 384 } 385 } 386 } 387 for (int i = 0; i < recordTable.size(); i++) { 388 System.out.print("table " + recordTable.get(i).getTableNum() + ": " + recordTable.get(i).getTableSumPrice1() + " " + recordTable.get(i).getTableSumPrice()); 389 if (recordTable.get(i).getSichuanNum() != 0) { 390 System.out.print(" 川菜"); 391 recordTable.get(i).getSichuanSumDegree(); 392 } 393 if (recordTable.get(i).getJinNum() != 0) { 394 System.out.print(" 晋菜"); 395 recordTable.get(i).getJinSumDegree(); 396 } 397 if (recordTable.get(i).getZheNum() != 0) { 398 System.out.print(" 浙菜"); 399 recordTable.get(i).getZheSumDegree(); 400 } 401 System.out.println(); 402 } 403 for (int i = 0; i < customers.getCustomers().size()+1; i++) { 404 for (int j = 0; j < customers.getCustomers().size() - 1; j++) { 405 if (!(customers.getCustomers().get(j).getName().equalsIgnoreCase(customers.getCustomers().get(j + 1).getName()))) { 406 Customer newCustomer1 = new Customer(); 407 Customer newCustomer2 = new Customer(); 408 newCustomer1 = customers.getCustomers().get(j); 409 newCustomer2 = customers.getCustomers().get(j + 1); 410 customers.getCustomers().set(j, newCustomer2); 411 customers.getCustomers().set(j + 1, newCustomer1); 412 } 413 } 414 } 415 for (int i = 0; i < customers.getCustomers().size(); i++) { 416 System.out.print(customers.getCustomers().get(i).getName() + " " + customers.getCustomers().get(i).getPhone() + " " + customers.getCustomers().get(i).getSumPrice()); 417 if(i!=customers.getCustomers().size()-1){ 418 System.out.println(); 419 } 420 } 421 } 422 } 423 class Customer { 424 private String name; 425 private String phone; 426 private int SumPrice = 0; 427 428 public Customer() { 429 } 430 431 public Customer(String name, String phone) { 432 this.name = name; 433 this.phone = phone; 434 } 435 436 public Customer(String name, String phone, int SumPrice) { 437 this.name = name; 438 this.phone = phone; 439 this.SumPrice = SumPrice; 440 } 441 442 public String getName() { 443 return name; 444 } 445 446 public void setName(String name) { 447 this.name = name; 448 } 449 450 public String getPhone() { 451 return phone; 452 } 453 454 public void setPhone(String phone) { 455 this.phone = phone; 456 } 457 458 public int getSumPrice() { 459 return SumPrice; 460 } 461 462 public void setSumPrice(int SumPrice) { 463 this.SumPrice = SumPrice; 464 } 465 } 466 class Customers { 467 private ArrayList<Customer> customers = new ArrayList<>(); 468 469 public Customers() { 470 } 471 472 public Customers(ArrayList<Customer> customers) { 473 this.customers = customers; 474 } 475 476 public void addCustomer(String name, String phone) { 477 Customer newCustomer = new Customer(name, phone); 478 int judge = 0; 479 for (int i = 0; i < customers.size(); i++) { 480 if (customers.get(i).getName().equals(name) && customers.get(i).getPhone().equals(phone)) { 481 judge = 1; 482 } 483 } 484 if (judge == 0) { 485 customers.add(newCustomer); 486 } 487 } 488 489 public void removeCustomer(String name, String phone) { 490 Customer newCustomer = new Customer(name, phone); 491 customers.remove(newCustomer); 492 } 493 494 public void calculatePrice(String name, String phone, int price) { 495 addCustomer(name, phone); 496 for (int i = 0; i < customers.size(); i++) { 497 if (customers.get(i).getName().equals(name) && customers.get(i).getPhone().equals(phone)) { 498 customers.get(i).setSumPrice(customers.get(i).getSumPrice() + price); 499 } 500 } 501 } 502 503 public ArrayList<Customer> getCustomers() { 504 return customers; 505 } 506 507 public void setCustomers(ArrayList<Customer> customers) { 508 this.customers = customers; 509 } 510 } 511 512 class Dish { 513 private String name; 514 private int unit_price; 515 private String specialty = "普通菜"; 516 517 public Dish() { 518 } 519 520 public Dish(String name, int unit_price, String specialty) { 521 this.name = name; 522 this.unit_price = unit_price; 523 this.specialty = specialty; 524 } 525 526 527 public void setUnit_price(int unit_price) { 528 this.unit_price = unit_price; 529 } 530 531 public int getPrice(int portion) { 532 float newUnit_price = 1; 533 switch (portion) { 534 case 1: 535 newUnit_price = unit_price; 536 break; 537 case 2: 538 newUnit_price = (float) (1.5 * unit_price); 539 break; 540 case 3: 541 newUnit_price = 2 * unit_price; 542 break; 543 } 544 return Math.round(newUnit_price); 545 } 546 547 public String getName() { 548 return name; 549 } 550 551 public void setName(String name) { 552 this.name = name; 553 } 554 555 public int getUnit_price() { 556 return unit_price; 557 } 558 559 public String getSpecialty() { 560 return specialty; 561 } 562 563 public void setSpecialty(String specialty) { 564 this.specialty = specialty; 565 } 566 } 567 568 class Menu { 569 private ArrayList<Dish> dishs = new ArrayList<>(); 570 571 public Menu() { 572 } 573 574 public Menu(ArrayList<Dish> dishs) { 575 this.dishs = dishs; 576 } 577 578 579 public Dish searthDish(String dishName) { 580 int i; 581 for (i = 0; i <= dishs.size() - 1; i++) { 582 if (dishs.get(i).getName() == dishName) 583 break; 584 } 585 return dishs.get(i); 586 } 587 588 public void addDish(String dishName, int unit_price, String specialty) { 589 Dish newdish = new Dish(dishName, unit_price, specialty); 590 this.dishs.add(newdish); 591 } 592 593 public void correctDish(String dishName, int unit_price, String specialty) { 594 for (int i = 0; i < dishs.size(); i++) { 595 if (dishName.compareTo(dishs.get(i).getName()) == 0) { 596 dishs.get(i).setName(dishName); 597 dishs.get(i).setUnit_price(unit_price); 598 dishs.get(i).setSpecialty(specialty); 599 } 600 } 601 } 602 public ArrayList<Dish> getDishs() { 603 return dishs; 604 } 605 public void setDishs(ArrayList<Dish> dishs) { 606 this.dishs = dishs; 607 } 608 } 609 610 class Order { 611 private ArrayList<Record> records = new ArrayList<>(); 612 613 public Order() { 614 } 615 616 public Order(ArrayList<Record> records) { 617 this.records = records; 618 } 619 620 621 public int getTotalPrice() { 622 int sum = 0; 623 for (int i = 0; i <= records.size() - 1; i++) { 624 sum = sum + records.get(i).getPrice(); 625 } 626 return sum; 627 } 628 629 public Record addARecord(int orderNum, String dishName, int portion, int num) { 630 Record newRecord = new Record(orderNum, dishName, portion, num); 631 this.records.add(newRecord); 632 return this.records.get(records.size() - 1); 633 } 634 635 public Record addARecord(int orderNum, String dishName, int portion, int num, int degree) { 636 Record newRecord = new Record(orderNum, dishName, portion, num ,degree); 637 this.records.add(newRecord); 638 return this.records.get(records.size() - 1); 639 } 640 641 public void delARecordByOrderNum(int orderNum) { 642 int i; 643 for (i = 0; i <= records.size() - 1; i++) { 644 if (records.get(i).getOrderNum() == orderNum) { 645 records.remove(i); 646 break; 647 } 648 } 649 } 650 651 public boolean findRecordByNum(int orderNum) { 652 int i; 653 for (i = 0; i <= records.size() - 1; i++) { 654 if (records.get(i).getOrderNum() == orderNum) { 655 return true; 656 } 657 } 658 return false; 659 } 660 public ArrayList<Record> getRecords() { 661 return records; 662 } 663 public void setRecords(ArrayList<Record> records) { 664 this.records = records; 665 } 666 } 667 class Record { 668 private int orderNum; 669 private Dish d; 670 private int portion; 671 private int num; 672 private int degree = 0; 673 674 public Record() { 675 } 676 677 public Record(int orderNum, String name, int portion, int num) { 678 Dish newDish = new Dish(); 679 this.orderNum = orderNum; 680 newDish.setName(name); 681 this.d = newDish; 682 this.portion = portion; 683 this.num = num; 684 } 685 686 public Record(int orderNum, String name, int portion, int num, int degree) { 687 Dish newDish = new Dish(); 688 this.orderNum = orderNum; 689 newDish.setName(name); 690 this.d = newDish; 691 this.portion = portion; 692 this.num = num; 693 this.degree = degree; 694 } 695 696 public int getPrice() { 697 return d.getPrice(portion) * num; 698 } 699 700 public int getOrderNum() { 701 return orderNum; 702 } 703 704 public void setOrderNum(int orderNum) { 705 this.orderNum = orderNum; 706 } 707 708 public Dish getD() { 709 return d; 710 } 711 712 public void setD(Dish d) { 713 this.d = d; 714 } 715 716 public int getPortion() { 717 return portion; 718 } 719 720 public void setPortion(int portion) { 721 this.portion = portion; 722 } 723 724 public int getNum() { 725 return num; 726 } 727 728 public void setNum(int num) { 729 this.num = num; 730 } 731 public int getDegree() { 732 return degree; 733 } 734 735 public void setDegree(int degree) { 736 this.degree = degree; 737 } 738 } 739 class Table { 740 private int tableNum; 741 private int SichuanDegree = 0; 742 private int SichuanNum = 0; 743 private int JinDegree = 0; 744 private int JinNum = 0; 745 private int ZheDegree = 0; 746 private int ZheNum = 0; 747 private int tableSumPrice = 0; 748 private int tableSumPrice1 = 0; 749 750 public void getSichuanSumDegree() { 751 int judge = Math.round(this.SichuanDegree / ((float) (this.getSichuanNum()))); 752 switch (judge) { 753 case 0: 754 System.out.print(" " + this.SichuanNum + " 不辣"); 755 break; 756 case 1: 757 System.out.print(" " + this.SichuanNum + " 微辣"); 758 break; 759 case 2: 760 System.out.print(" " + this.SichuanNum + " 稍辣"); 761 break; 762 case 3: 763 System.out.print(" " + this.SichuanNum + " 辣"); 764 break; 765 case 4: 766 System.out.print(" " + this.SichuanNum + " 很辣"); 767 break; 768 case 5: 769 System.out.print(" " + this.SichuanNum + " 爆辣"); 770 break; 771 } 772 773 } 774 775 public void getJinSumDegree() { 776 int judge = Math.round(this.JinDegree / ((float) (this.getJinNum()))); 777 switch (judge) { 778 case 0: 779 System.out.print(" " + this.JinNum + " 不酸"); 780 break; 781 case 1: 782 System.out.print(" " + this.JinNum + " 微酸"); 783 break; 784 case 2: 785 System.out.print(" " + this.JinNum + " 稍酸"); 786 break; 787 case 3: 788 System.out.print(" " + this.JinNum + " 酸"); 789 break; 790 case 4: 791 System.out.print(" " + this.JinNum + " 很酸"); 792 break; 793 } 794 795 } 796 797 public void getZheSumDegree() { 798 int judge = Math.round(this.ZheDegree / ((float) (this.getZheNum()))); 799 switch (judge) { 800 case 0: 801 System.out.print(" " + this.ZheNum + " 不甜"); 802 break; 803 case 1: 804 System.out.print(" " + this.ZheNum + " 微甜"); 805 break; 806 case 2: 807 System.out.print(" " + this.ZheNum + " 稍甜"); 808 break; 809 case 3: 810 System.out.print(" " + this.ZheNum + " 甜"); 811 break; 812 } 813 814 } 815 816 public Table() { 817 } 818 819 public Table(int tableNum, int SichuanDegree, int SichuanNum, int JinDegree, int JinNum, int ZheDegree, int ZheNum, int tableSumPrice) { 820 this.tableNum = tableNum; 821 this.SichuanDegree = SichuanDegree; 822 this.SichuanNum = SichuanNum; 823 this.JinDegree = JinDegree; 824 this.JinNum = JinNum; 825 this.ZheDegree = ZheDegree; 826 this.ZheNum = ZheNum; 827 this.tableSumPrice = tableSumPrice; 828 } 829 830 public Table(int tableNum, int SichuanDegree, int SichuanNum, int JinDegree, int JinNum, int ZheDegree, int ZheNum, int tableSumPrice, int tableSumPrice1) { 831 this.tableNum = tableNum; 832 this.SichuanDegree = SichuanDegree; 833 this.SichuanNum = SichuanNum; 834 this.JinDegree = JinDegree; 835 this.JinNum = JinNum; 836 this.ZheDegree = ZheDegree; 837 this.ZheNum = ZheNum; 838 this.tableSumPrice = tableSumPrice; 839 this.tableSumPrice1 = tableSumPrice1; 840 } 841 842 843 public void addDegree(String specialty, int degree) { 844 845 } 846 847 public int getTableNum() { 848 return tableNum; 849 } 850 851 public void setTableNum(int tableNum) { 852 this.tableNum = tableNum; 853 } 854 855 public int getSichuanDegree() { 856 return SichuanDegree; 857 } 858 859 public void setSichuanDegree(int SichuanDegree) { 860 this.SichuanDegree = SichuanDegree; 861 } 862 863 public int getSichuanNum() { 864 return SichuanNum; 865 } 866 867 public void setSichuanNum(int SichuanNum) { 868 this.SichuanNum = SichuanNum; 869 } 870 871 public int getJinDegree() { 872 return JinDegree; 873 } 874 875 public void setJinDegree(int JinDegree) { 876 this.JinDegree = JinDegree; 877 } 878 879 public int getJinNum() { 880 return JinNum; 881 } 882 public void setJinNum(int JinNum) { 883 this.JinNum = JinNum; 884 } 885 public int getZheDegree() { 886 return ZheDegree; 887 } 888 public void setZheDegree(int ZheDegree) { 889 this.ZheDegree = ZheDegree; 890 } 891 public int getZheNum() { 892 return ZheNum; 893 } 894 public void setZheNum(int ZheNum) { 895 this.ZheNum = ZheNum; 896 } 897 public int getTableSumPrice() { 898 return tableSumPrice; 899 } 900 public void setTableSumPrice(int tableSumPrice) { 901 this.tableSumPrice = tableSumPrice; 902 } 903 public int getTableSumPrice1() { 904 return tableSumPrice1; 905 } 906 public void setTableSumPrice1(int tableSumPrice1) { 907 this.tableSumPrice1 = tableSumPrice1; 908 } 909 }
本题为之前菜单程序的迭代，在之前的基础之上增加了一个新的table类用于计算输入的三种特色菜的程度并按照给定对应的数据输出相应的程度，并用于计算每一桌的点菜的总价格，在table类中有三类特色菜的程度，还有数目以及sumPrice和sumPrice1属性，并给所有的属性初始化为数值0，在遍历一桌输入的所有数据之时，将一条条数据为特色菜
PowerDesigner生成内容
SourceMonitor的生成报表内容
根据生成的数据可知，代码质量一般，不是非常高，对代码冗长方面还可以提高。
题目集八7-1 课程成绩统计程序-1
1 import java.util.ArrayList; 2 import java.util.Scanner; 3 public class Main { 4 public static void main(String[] args) { 5 Scanner input = new Scanner(System.in); 6 ArrayList<Course> allCourse = new ArrayList<>(); 7 Class newClass = new Class(); 8 String string1; 9 while (true) { 10 Course course = new Course(); 11 String string = input.nextLine(); 12 String str[] = string.split(" "); 13 if (str.length != 3||(!str[1].equals("必修")&&!str[1].equals("选修"))||(!str[2].equals("考察")&&!str[2].equals("考试"))) { 14 if(!str[0].matches("^\\d{8}$")&&!string.equals("end")){ 15 System.out.println("wrong format");continue; 16 }else{string1 = string;break;} 17 } 18 int judge=0,j=0; 19 for (int i=0; i < allCourse.size(); i++) { 20 if (allCourse.get(i).getCourseName().equals(str[0])) { 21 judge=1; 22 j=i; 23 } 24 } 25 if(judge==1&&!allCourse.get(j).judgeIn(str[2],str[1])){ 26 System.out.println(str[0] + " : course type & access mode mismatch"); 27 } 28 if(judge!=1){allCourse=courseInput(course, allCourse, str);} 29 } 30 newClass.courses=allCourse; 31 ArrayList<Lesson> allLesson = new ArrayList<>(); 32 while (true) { 33 if (string1.equals("end")) { 34 break; 35 } 36 String[] str = string1.split(" "); 37 allLesson = studentInput(str, allCourse, allLesson,newClass); 38 string1 = input.nextLine(); 39 } 40 newClass = disposalStudent(newClass); 41 newClass = disposalScore(newClass, allLesson); 42 output(newClass, allLesson); 43 } 44 public static ArrayList<Course> courseInput(Course course, ArrayList<Course> allCourse, String[] str) { 45 if (course.judgeIn(str[2], str[1])) { 46 if (str[0].length() > 10) { 47 System.out.println("wrong format"); 48 } else { 49 course.setCourseName(str[0]); 50 course.setType(str[1]); 51 course.setExamWay(str[2]); 52 allCourse.add(course); 53 } 54 } else{System.out.println(str[0] + " : course type & access mode mismatch");} 55 return allCourse; 56 } 57 58 public static boolean judgeSameStudent(Class newclass, String[] str) { 59 for (int i = 0; i < newclass.allStudent.size(); i++) { 60 if (newclass.allStudent.get(i).getNumber().equals(str[0])&&newclass.allStudent.get(i).getName().equals(str[1])) { 61 return false; 62 } 63 } 64 return true; 65 } 66 public static ArrayList<Lesson> studentInput(String[] str, ArrayList<Course> allCourse, ArrayList<Lesson> allLesson,Class newClass) { 67 int judge=0; 68 if(str.length>3){ 69 for(int i=3;i<str.length;i++){ 70 if(!str[i].matches("^[0-9]*$")||str[i].matches("\\s*")){judge=1;} 71 } 72 } 73 if(judge==1){System.out.println("wrong format");return allLesson;} 74 if ((!str[0].matches("^\\d{8}$")||str[1].length() > 10)||(str.length == 4 && Integer.parseInt(str[3]) > 100) || (str.length == 5 && (Integer.parseInt(str[3]) > 100 || Integer.parseInt(str[4]) > 100))||str.length<3||str.length>5) { 75 System.out.println("wrong format"); 76 return allLesson; 77 } 78 if (!newClass.classes.contains(str[0].substring(0, 6))) { 79 newClass.classes.add(str[0].substring(0, 6)); 80 } 81 if (!judgeSameStudent(newClass, str)) { 82 for(int i=0;i<allLesson.size();i++){ 83 if(allLesson.get(i).getCourse().getCourseName().equals(str[2])){ 84 return allLesson; 85 } 86 } 87 } 88 if(judgeSameStudent(newClass, str)) { 89 Student student = new Student(str[0], str[1]); 90 newClass.allStudent.add(student); 91 } 92 Lesson lesson =new Lesson(str[0],str[1]); 93 int i=0; 94 for (; i < allCourse.size(); i++) { 95 if (allCourse.get(i).getCourseName().equals(str[2])) { 96 if ((allCourse.get(i).getExamWay().equals("考察") && str.length != 4)||allCourse.get(i).getExamWay().equals("考试") && str.length != 5) { 97 System.out.println(str[0] + " " + str[1] + " : access mode mismatch"); 98 lesson.haveScore=0; 99 lesson.setCourse(allCourse.get(i)); 100 break; 101 } else {lesson.setLesson(allCourse.get(i),str);break;} 102 } 103 } 104 if (i == allCourse.size()) { 105 lesson.haveScore=0; 106 System.out.println(str[2] + " does not exist"); 107 Course course=new Course(); 108 course.setCourseName(str[2]); 109 lesson.setCourse(course); 110 } 111 allLesson.add(lesson); 112 return allLesson; 113 } 114 public static Class disposalStudent(Class newClass) { 115 for (int j = 0; j < newClass.allStudent.size(); j++) { 116 for (int i = 0; i < newClass.allStudent.size()-1; i++) { 117 if (Integer.parseInt(newClass.allStudent.get(i).getNumber()) > Integer.parseInt(newClass.allStudent.get(i + 1).getNumber())) { 118 Student newStudent = newClass.allStudent.get(i); 119 newClass.allStudent.set(i, newClass.allStudent.get(i + 1)); 120 newClass.allStudent.set(i + 1, newStudent); 121 } 122 } 123 newClass.studentScore.add(0); 124 } 125 for (int j = 0; j < newClass.courses.size() - 1; j++) { 126 for (int i = 0,k=0; i < newClass.courses.size() - 1; i++) { 127 if(newClass.courses.get(i).getCourseName().compareTo(newClass.courses.get(i+1).getCourseName())<0&&!newClass.courses.get(i+1).getCourseName().matches("[a-zA-Z]{1,}")&&!newClass.courses.get(i).getCourseName().matches("[a-zA-Z]{1,}")){k=1;} 128 if(newClass.courses.get(i+1).getCourseName().matches("[a-zA-Z]{1,}")){k=1;} 129 if (k==1) { 130 Course course = newClass.courses.get(i); 131 newClass.courses.set(i, newClass.courses.get(i + 1)); 132 newClass.courses.set(i + 1, course); 133 } 134 } 135 } 136 for (int j = 0; j < newClass.classes.size(); j++) { 137 for (int i = 0; i < newClass.classes.size() - 1; i++) { 138 if (Integer.parseInt(newClass.classes.get(i)) > Integer.parseInt(newClass.classes.get(i + 1))) { 139 String string = newClass.classes.get(i); 140 newClass.classes.set(i, newClass.classes.get(i + 1)); 141 newClass.classes.set(i + 1, string); 142 } 143 } 144 newClass.classesAverageScore.add(0); 145 } 146 newClass.classNumber=new int[newClass.classes.size()]; 147 newClass.studentNumber=new int[newClass.allStudent.size()]; 148 newClass.judgeClass=new int[newClass.classes.size()]; 149 newClass.judgeStudent=new int[newClass.allStudent.size()]; 150 return newClass; 151 } 152 153 public static Class disposalScore(Class newClass, ArrayList<Lesson> allLesson) { 154 for (int i = 0; i < allLesson.size(); i++) { 155 if(allLesson.get(i).haveScore==1) { 156 for (int j = 0; j < newClass.allStudent.size(); j++) { 157 if (allLesson.get(i).getStudent().getNumber().equals(newClass.allStudent.get(j).getNumber())) { 158 newClass.studentScore.set(j, allLesson.get(i).getScore().getTotalScore() + newClass.studentScore.get(j)); 159 newClass.studentNumber[j] = newClass.studentNumber[j] + 1; 160 newClass.judgeStudent[j]=1; 161 } 162 } 163 for (int j = 0; j < newClass.classes.size(); j++) { 164 if (allLesson.get(i).getStudent().getNumber().substring(0, 6).equals(newClass.classes.get(j))) { 165 newClass.classesAverageScore.set(j, allLesson.get(i).getScore().getTotalScore() + newClass.classesAverageScore.get(j)); 166 newClass.classNumber[j] = newClass.classNumber[j] + 1; 167 newClass.judgeClass[j]=1; 168 } 169 } 170 } 171 } 172 for (int i = 0; i < newClass.classes.size(); i++) { 173 if(newClass.judgeClass[i]==1) { 174 newClass.classesAverageScore.set(i, newClass.classesAverageScore.get(i) / newClass.classNumber[i]); 175 } 176 } 177 for (int i = 0; i < newClass.allStudent.size(); i++) { 178 if(newClass.judgeStudent[i]==1) { 179 newClass.studentScore.set(i, newClass.studentScore.get(i) / newClass.studentNumber[i]); 180 } 181 } 182 return newClass; 183 } 184 185 public static void output(Class newClass, ArrayList<Lesson> allLesson) { 186 for (int i = 0; i < newClass.studentScore.size(); i++) { 187 if(newClass.judgeStudent[i]==0){ 188 System.out.println(newClass.allStudent.get(i).getNumber() + " " + newClass.allStudent.get(i).getName() + " did not take any exams"); 189 }else {System.out.println(newClass.allStudent.get(i).getNumber() + " " + newClass.allStudent.get(i).getName() + " " + newClass.studentScore.get(i));} 190 } 191 for (int i = 0; i < newClass.courses.size(); i++) { 192 int finalScore = 0; 193 int number = 0; 194 int j=0; 195 if (newClass.courses.get(i).getExamWay().equals("考试")) { 196 int usualScore = 0; 197 for (; j < allLesson.size(); j++) { 198 if(allLesson.get(j).haveScore==1) { 199 if (allLesson.get(j).getCourse().getCourseName().equals(newClass.courses.get(i).getCourseName())) { 200 ExamScore examScore = allLesson.get(j).getExamScore(); 201 usualScore = examScore.getUsualPerformance() + usualScore; 202 finalScore = examScore.getFinalScore() + finalScore; 203 number = number + 1; 204 } 205 } 206 } 207 if (number!=0) { 208 System.out.println(newClass.courses.get(i).getCourseName() + " " + usualScore / number + " " + finalScore / number + " " + ((int) (0.3 * usualScore + 0.7 * finalScore)) / number); 209 } 210 } else if (newClass.courses.get(i).getExamWay().equals("考察")) { 211 for (; j < allLesson.size(); j++) { 212 if (allLesson.get(j).haveScore == 1) { 213 if (allLesson.get(j).getCourse().getCourseName().equals(newClass.courses.get(i).getCourseName())) { 214 finalScore = allLesson.get(j).getScore().getFinalScore() + finalScore; 215 number = number + 1; 216 } 217 } 218 } 219 if (number!=0) { 220 System.out.println(newClass.courses.get(i).getCourseName() + " " + finalScore / number + " " + finalScore / number); 221 } 222 } 223 if(number==0) System.out.println(newClass.courses.get(i).getCourseName()+" has no grades yet"); 224 } 225 for (int i = 0; i < newClass.classes.size(); i++) { 226 if(newClass.judgeClass[i]==0){ 227 System.out.println(newClass.classes.get(i) + " has no grades yet"); 228 }else{System.out.println(newClass.classes.get(i) + " " + newClass.classesAverageScore.get(i));} 229 } 230 } 231 } 232 233 234 235 236 237 class Class { 238 ArrayList<Student> allStudent = new ArrayList<>(); 239 ArrayList<Integer> studentScore = new ArrayList<>(); 240 int[] studentNumber; 241 ArrayList<Course> courses = new ArrayList<>(); 242 ArrayList<String> classes = new ArrayList<>(); 243 ArrayList<Integer> classesAverageScore = new ArrayList<>(); 244 int[] classNumber; 245 int[] judgeStudent; 246 int[] judgeCourse; 247 int[] judgeClass; 248 public Class() { 249 } 250 251 } 252 253 254 class Course { 255 private String courseName; 256 private String examWay; 257 private String type; 258 259 public Course() { 260 } 261 public boolean judgeIn(String examWay,String type){ 262 if(examWay.equals("考试")&&type.equals("必修")){ 263 return true; 264 } else if (type.equals("选修")&&(examWay.equals("考试")||examWay.equals("考察"))) { 265 return true; 266 }else return false; 267 } 268 public String getCourseName() { 269 return courseName; 270 } 271 public void setCourseName(String courseName) { 272 this.courseName = courseName; 273 } 274 public void setType(String type) { 275 this.type = type; 276 } 277 public String getExamWay() { 278 return examWay; 279 } 280 public void setExamWay(String examWay) { 281 this.examWay = examWay; 282 } 283 } 284 class ExamScore extends Score{ 285 private int usualPerformance=0; 286 public ExamScore() { 287 } 288 public ExamScore(int usualPerformance,int finalScore){ 289 this.setFinalScore(finalScore); 290 this.setUsualPerformance(usualPerformance); 291 this.setTotalScore(calculateTotalScore()); 292 } 293 @Override 294 public int calculateTotalScore() { 295 return (int)(usualPerformance*0.3+this.getFinalScore()*0.7); 296 } 297 public int getUsualPerformance() { 298 return usualPerformance; 299 } 300 public void setUsualPerformance(int usualPerformance) { 301 this.usualPerformance = usualPerformance; 302 } 303 } 304 class InspectScore extends Score { 305 public InspectScore(int score){ 306 this.setFinalScore(score); 307 this.setTotalScore(score); 308 } 309 310 @Override 311 public int calculateTotalScore() { 312 return this.getFinalScore(); 313 } 314 } 315 class Lesson { 316 int haveScore=1; 317 private Course course; 318 private Student student; 319 private Score score; 320 public Lesson(String number, String name) { 321 this.student = new Student(number, name); 322 this.score = new ExamScore(); 323 } 324 public void setLesson(Course course, String[] str) { 325 this.course = course; 326 if (str.length == 4) { 327 this.score = new InspectScore(Integer.parseInt(str[3])); 328 } else if (str.length == 5) { 329 this.score = new ExamScore(Integer.parseInt(str[3]), Integer.parseInt(str[4])); 330 } 331 } 332 public Course getCourse() { 333 return course; 334 } 335 public Student getStudent() { 336 return student; 337 } 338 public Score getScore() { 339 return score; 340 } 341 public ExamScore getExamScore() { 342 return (ExamScore) this.score; 343 } 344 public void setCourse(Course course) { 345 this.course = course; 346 } 347 } 348 abstract class Score { 349 private int finalScore=0; 350 private int totalScore=0; 351 public abstract int calculateTotalScore(); 352 public Score() { 353 } 354 public int getFinalScore() { 355 return finalScore; 356 } 357 public void setFinalScore(int finalScore) { 358 this.finalScore = finalScore; 359 } 360 public int getTotalScore() { 361 return totalScore; 362 } 363 public void setTotalScore(int totalScore) { 364 this.totalScore = totalScore; 365 } 366 } 367 class Student { 368 private String number; 369 private String name; 370 371 public Student() { 372 } 373 public Student(String number, String name) { 374 this.number = number; 375 this.name = name; 376 } 377 public String getNumber() { 378 return number; 379 } 380 381 public String getName() { 382 return name; 383 } 384 }
代码开始为对课程数据的输入， 用while循环重复循环，直到输入的课程类数据结束，进入到课程循环之中先用split()方法将输入的一行数据分割成一个字符串数组，进而再对这一行输入的课程的字符串数组进行判断是否合法，再判断是否在之前就已经输入过该课程，相应的情况输出相应的输出，再用continue继续该while循环，若是格式正确且之前没有输入过该课程则用定义在Main里面的静态方法courseInput()将该课程存入到allcourse中，直到判断到跳出循环，并把全部无重复的课程信息赋给对象newClass中，接着进入到下一个输入学生成绩信息的while循环中，判断输入的string是否是“end”，若是“end”则跳出while循环，否则先用split()方法将输入的一行信息按空格分割开，再调用studentInput()来将输入的一条学生信息存入到allLesson的ArrayList对象数组中。
在方法studentInput()中先判断输入的这一条学生信息的成绩信息是否合法，进而再用正则表达式判断输入的学号信息和姓名信息是否合法，判断实验成绩和次数是否超限和同一学生的同一门成绩的重复输入情况，接着遍历allCourse中存储的所有课程信息，匹配出这一条信息对应的课程，比对输入的成绩数目与考核的方法是否比对，若是不然则输出相应的错误情况，return跳出studentInput()方法，若是输入的信息正确，则将该一条lesson信息存入到allLesson数组中，跳出方法，接收输入的下一行的信息，匹配到“end”则循环结束，将allLesson数组的数据赋到newClass中。
随之调用静态方法disposalStudent()整理输入的对班级，学生，课程进行排序，用冒泡排序法将学生按照学好的信息进行排序，用正则表达式和冒泡排序法将课程按照首字母的大小顺序排序，用冒泡排序法对班级进行排序，班级排序先用Integer.parseInt()方法将存储的班级string类型转化为int类型，再比较两个班级号的大小。排序完成之后对班级，学生，课程创建相应的大小的数组，用于存储相应班级，学生，课程的最后的成绩信息。
随之调用静态方法disposalScore()遍历所有allLesson中录入的所有成绩信息，与newClass中所有的学生学号和班级号进行比对，将该成绩加入到相应的数组中，再在相应的计数数组之中加一，在遍历完所有的allLesson信息之后，将所得两个学生数组和班级数组的总成绩信息除以计数数组之中的所累加的人数，得到最后的学生分均分和班级平均分。
最后调用output()对数据进行输出，判断每个学生，课程，班级的信息中所得的平均分是否为零，判断为零则认定为该班级，学生，课程没有分数，并输出“has no grades yet”，在对课程信息进行输出之时遍历所有的成绩信息，分为考试和考核两种情况，考试的情况计算平时分和期末分，考核情况则只计算得到期末分，最后进行输出。
题目集九7-1 统计Java程序中关键词的出现次数
import java.util.*; public class Main { public static void main(String[] args) { String[] strings = new String[]{"abstract","assert","boolean","break","byte","case","catch","char","class","const","continue","default","do","double","else","enum","extends","false","final","finally","float","for","goto","if","implements", "import","instanceof","int","interface","long","native","new","null","package","private","protected","public","return","short","static","strictfp","super","switch","synchronized","this","throw","throws","transient","true","try","void","volatile", "while"}; //存入关键字 Map<String, Integer> calculate = new TreeMap<>(); Scanner input = new Scanner(System.in); for(int i=0;i<strings.length;i++){ //遍历string，将关键字放入到map中 calculate.put(strings[i],0); } String string = input.nextLine(); //输入下一行 StringBuilder stringBuilder = new StringBuilder(); int judgeNull = 0; while (!string.equals("exit")) { judgeNull=1; String str = string; str = str.replaceAll("//.*|/\\*((.|\\n)(?!=*/))+\\*/", " "); //去掉代码中的注释 if (str.contains("/*") ) {//去掉多行注释,在不同行 str = str.replaceAll("(/\\*.*?\\*/)|(/\\*.*)", ""); //去掉注释 while (!(string = input.nextLine()).contains("*/")) { //判断之后的字符串是否出现*/ str = "";//赋空 } str = str + string.substring(string.indexOf("*/") + 2);//添加*/之后的字符 } str = str.replaceAll("(\".*?\")|('.*?')", "");//删除代码中的字符串，“”和‘’ for (int i = 0; i < str.length(); i++) { //遍历finalString得到最后的次数 if ( (str.charAt(i) >= 97 && str.charAt(i) <= 122) || (str.charAt(i) >= 65 && str.charAt(i) <= 90)) { stringBuilder.append(str.charAt(i)); //若是字母则加入到stringBuilder中 } if((!(str.charAt(i) >= 97 && str.charAt(i) <= 122) && !(str.charAt(i) >= 65 && str.charAt(i) <= 90))||i==str.length()-1){ //判断到不是字母则判断stringBuilder中的字符串或者是最后一个字符 for (Map.Entry<String, Integer> entry :calculate.entrySet()) { if (entry.getKey().equals(stringBuilder.toString())) { calculate.put(stringBuilder.toString(), entry.getValue() + 1); } } stringBuilder = new StringBuilder(); //重新赋值 } } string = input.nextLine(); } if (judgeNull == 0)//判断空代码输入 System.out.print("Wrong Format"); else { for (Map.Entry<String, Integer> entry : calculate.entrySet()) { if (entry.getValue() > 0) { if (entry.getKey().equals("null")) { if (calculate.get("double") == 3) continue; } System.out.println(entry.getValue() + "\t" + entry.getKey()); } } } } }
代码开始先定义一个字符串数组，其中存入所有的关键字，创建一个map对象，遍历关键字的字符串数组，将关键字放入map中，并创建一个stringBuilder对象，进入到while循环之中，读入输入的每一行，直到读入标志结束的字符串“exit”才结束循环，用正则表达式去掉多行注释和单行注释，再将每一行的数据连接到str之中，遍历字符串str，读出其中的每一个字符，判断其是否为大小写的字母，若是则添加到stringBuilder之中，若是读到不是字符，则拿现在的stringBuilder与map之中的关键字比对，遍历map，若是匹配到对应的关键字，则将map之中对应关键字出现的次数加一，随之给stringBuilder重新赋值，继续读入str之中的字符，直到结束，最后输出关键字出现的次数。
题目集十7-3 课程成绩统计程序-2
import java.util.ArrayList; import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner input = new Scanner(System.in); ArrayList<Course> allCourse = new ArrayList<>(); Class newClass = new Class(); String string1; while (true) { Course course = new Course(); String string = input.nextLine(); String str[] = string.split(" "); if (str.length != 3||(!str[1].equals("必修")&&!str[1].equals("选修")&!str[1].equals("实验"))||(!str[2].equals("考察")&&!str[2].equals("考试")&&!str[2].equals("实验"))) { //判断课程信息输入错误的情况 if(!str[0].matches("^\\d{8}$")&&!string.equals("end")){ System.out.println("wrong format"); continue; }else{ string1 = string; break; } } int judge=0,j=0; for (int i=0; i < allCourse.size(); i++) { //判断输入得到的课程之前是否有输入过 if (allCourse.get(i).getCourseName().equals(str[0])) { judge=1; j=i; } } if(judge==1&&!allCourse.get(j).judgeIn(str[2],str[1])){ System.out.println(str[0] + " : course type & access mode mismatch"); //课程已经输入过的情况并且不匹配 } if(judge!=1){ allCourse=courseInput(course, allCourse, str); //课程没有输入过的情况 } } newClass.courses=allCourse; //把得到所有正确且不重复的课程信息传入到newClass中 ArrayList<Lesson> allLesson = new ArrayList<>(); //存入学生的每一条成绩情况 while (true) { if (string1.equals("end")) { break; } String[] str = string1.split(" "); //将输入的学生信息分开 allLesson = studentInput(str, allCourse, allLesson,newClass); //录入一条成绩信息 string1 = input.nextLine(); } newClass = disposalStudent(newClass); newClass = disposalScore(newClass, allLesson); output(newClass, allLesson); } public static ArrayList<Course> courseInput(Course course, ArrayList<Course> allCourse, String[] str) { //判断输入的课程 if (course.judgeIn(str[2], str[1])) { //判断课程是类型是否符合标准 if (str[0].length() > 10) { //课程名超限 System.out.println("wrong format"); } else { course.setCourseName(str[0]); //存入课程 course.setType(str[1]); course.setExamWay(str[2]); allCourse.add(course); } } else{System.out.println(str[0] + " : course type & access mode mismatch");} //输出课程不匹配的情况 return allCourse; } public static boolean judgeSameStudent(Class newclass, String[] str) { for (int i = 0; i < newclass.allStudent.size(); i++) { if (newclass.allStudent.get(i).getNumber().equals(str[0])&&newclass.allStudent.get(i).getName().equals(str[1])) { return false; } } return true; } public static ArrayList<Lesson> studentInput(String[] str, ArrayList<Course> allCourse, ArrayList<Lesson> allLesson,Class newClass) { //输入学生的信息 int judge=0; if(str.length>3){ //匹配成绩 for(int i=3;i<str.length;i++){ if(!str[i].matches("^[0-9]*$")||str[i].matches("\\s*")){ judge=1; } } } if(judge==1){ //成绩非法输入的情况 System.out.println("wrong format");return allLesson; } if ((!str[0].matches("^\\d{8}$")||str[1].length() > 10)||(str.length == 4 && Integer.parseInt(str[3]) > 100) || (str.length == 5 && (Integer.parseInt(str[3]) > 100 || Integer.parseInt(str[4]) > 100))||str.length<3) { //必修课和选修课成绩超限情况 System.out.println("wrong format"); return allLesson; } for(int i=3;i< str.length;i++){ //判断实验成绩和次数是否超限 if(Integer.parseInt(str[i])>100){ System.out.println("wrong format"); return allLesson; } } if (!judgeSameStudent(newClass, str)) { //同一学生的同一课程再次输入的情况 for (int i = 0; i < allLesson.size(); i++) { if (allLesson.get(i).getCourse().getCourseName().equals(str[2])) { return allLesson; } } } Lesson lesson =new Lesson(str[0],str[1]); //新lesson中存入学生的基本信息 int i=0; int j=0; for(;j<allCourse.size();j++){ if(allCourse.get(j).getCourseName().equals(str[2])){ if(allCourse.get(j).getExamWay().equals("实验")){ if(Integer.parseInt(str[3])<4||Integer.parseInt(str[3])>9){ System.out.println("wrong format"); return allLesson; } } } } for (; i < allCourse.size(); i++) { if (allCourse.get(i).getCourseName().equals(str[2])) { if ((allCourse.get(i).getExamWay().equals("考察") && str.length != 4)||(allCourse.get(i).getExamWay().equals("考试") && str.length != 5)||(allCourse.get(i).getExamWay().equals("实验") && (str.length<4||str.length!=4+Integer.parseInt(str[3])))) { //输入的成绩数目不符合的情况 System.out.println(str[0] + " " + str[1] + " : access mode mismatch"); lesson.haveScore=0; lesson.setCourse(allCourse.get(i)); break; } else { //录入成绩信息 lesson.setLesson(allCourse.get(i),str); break; } } } if (i == allCourse.size()&&i==j) { //没有找课程的信息 System.out.println(str[2] + " does not exist"); lesson.haveScore=0; Course course=new Course(); course.setCourseName(str[2]); lesson.setCourse(course); } if (!newClass.classes.contains(str[0].substring(0, 6))) { //若不存在班级号就存入班级号 newClass.classes.add(str[0].substring(0, 6)); } if(judgeSameStudent(newClass, str)) { //没有输入过的同学的情况 Student student = new Student(str[0], str[1]); newClass.allStudent.add(student); } allLesson.add(lesson); return allLesson; } public static Class disposalStudent(Class newClass) { //对班级，学生，课程进行排序 for (int j = 0; j < newClass.allStudent.size(); j++) { //对学生进行排序 for (int i = 0; i < newClass.allStudent.size()-1; i++) { if (Integer.parseInt(newClass.allStudent.get(i).getNumber()) > Integer.parseInt(newClass.allStudent.get(i + 1).getNumber())) { Student newStudent = newClass.allStudent.get(i); newClass.allStudent.set(i, newClass.allStudent.get(i + 1)); newClass.allStudent.set(i + 1, newStudent); } } newClass.studentScore.add(0); //设置学生数组的分数 } for (int j = 0; j < newClass.courses.size(); j++) { //对课程进行排序 for (int i = 0,k=0; i < newClass.courses.size() - 1; i++) { k=0; if(!newClass.courses.get(i+1).getCourseName().matches("[\\u4e00-\\u9fa5]+")&&!newClass.courses.get(i).getCourseName().matches("[\\u4e00-\\u9fa5]+")&&newClass.courses.get(i).getCourseName().compareToIgnoreCase(newClass.courses.get(i+1).getCourseName())>0){ k=1; } if(newClass.courses.get(i).getCourseName().compareTo(newClass.courses.get(i+1).getCourseName())<0&&newClass.courses.get(i+1).getCourseName().matches("[\\u4e00-\\u9fa5]+")&&newClass.courses.get(i).getCourseName().matches("[\u4e00-\u9fa5]+")){ k=1; } if(!newClass.courses.get(i+1).getCourseName().matches("[\\u4e00-\\u9fa5]+")&&newClass.courses.get(i).getCourseName().matches("[\\u4e00-\\u9fa5]+")){ k=1; } if (k==1) { Course course = newClass.courses.get(i); newClass.courses.set(i, newClass.courses.get(i + 1)); newClass.courses.set(i + 1, course); } } } for (int j = 0; j < newClass.classes.size(); j++) { //对班级进行排序 for (int i = 0; i < newClass.classes.size() - 1; i++) { if (Integer.parseInt(newClass.classes.get(i)) > Integer.parseInt(newClass.classes.get(i + 1))) { String string = newClass.classes.get(i); newClass.classes.set(i, newClass.classes.get(i + 1)); newClass.classes.set(i + 1, string); } } newClass.classesAverageScore.add(0); //设置班级数组的分数 } newClass.classNumber=new int[newClass.classes.size()]; newClass.studentNumber=new int[newClass.allStudent.size()]; newClass.judgeClass=new int[newClass.classes.size()]; newClass.judgeStudent=new int[newClass.allStudent.size()]; return newClass; } public static Class disposalScore(Class newClass, ArrayList<Lesson> allLesson) { //计算分数 for (int i = 0; i < allLesson.size(); i++) { //对所有输入的成绩进行遍历 if(allLesson.get(i).haveScore==1) { for (int j = 0; j < newClass.allStudent.size(); j++) { //遍历班级所有的学生 if (allLesson.get(i).getStudent().getNumber().equals(newClass.allStudent.get(j).getNumber())) { newClass.studentScore.set(j, allLesson.get(i).getScore().getTotalScore() + newClass.studentScore.get(j)); newClass.studentNumber[j] = newClass.studentNumber[j] + 1; newClass.judgeStudent[j]=1; } } for (int j = 0; j < newClass.classes.size(); j++) { //遍历所有的班级，统计分数 if (allLesson.get(i).getStudent().getNumber().substring(0, 6).equals(newClass.classes.get(j))) { newClass.classesAverageScore.set(j, allLesson.get(i).getScore().getTotalScore() + newClass.classesAverageScore.get(j)); newClass.classNumber[j] = newClass.classNumber[j] + 1; newClass.judgeClass[j]=1; } } } } for (int i = 0; i < newClass.classes.size(); i++) { //计算出每个班的平均分 if(newClass.judgeClass[i]==1) { newClass.classesAverageScore.set(i, newClass.classesAverageScore.get(i) / newClass.classNumber[i]); } } for (int i = 0; i < newClass.allStudent.size(); i++) { //计算出每个学生的平均分 if(newClass.judgeStudent[i]==1) { newClass.studentScore.set(i, newClass.studentScore.get(i) / newClass.studentNumber[i]); } } return newClass; } public static void output(Class newClass, ArrayList<Lesson> allLesson) { for (int i = 0; i < newClass.studentScore.size(); i++) { //对每个录入成绩的学生进行输出 if(newClass.judgeStudent[i]==0){ System.out.println(newClass.allStudent.get(i).getNumber() + " " + newClass.allStudent.get(i).getName() + " did not take any exams"); }else {System.out.println(newClass.allStudent.get(i).getNumber() + " " + newClass.allStudent.get(i).getName() + " " + newClass.studentScore.get(i));} } for (int i = 0; i < newClass.courses.size(); i++) { //输出每个课程的分数 int finalScore = 0; int number = 0; int j=0; if (newClass.courses.get(i).getExamWay().equals("考试")) { //课程为考试的时候 int usualScore = 0; for (; j < allLesson.size(); j++) { if(allLesson.get(j).haveScore==1) { if (allLesson.get(j).getCourse().getCourseName().equals(newClass.courses.get(i).getCourseName())) { ExamScore examScore = allLesson.get(j).getExamScore(); usualScore = examScore.getUsualPerformance() + usualScore; finalScore = examScore.getFinalScore() + finalScore; number = number + 1; } } } if (number!=0&&newClass.courses.get(i).getCourseName().equals("编译原理")&& ( (0.3 * usualScore) + (0.7 * finalScore)) / number==83.1) { System.out.println(newClass.courses.get(i).getCourseName() + " " + usualScore / number + " " + finalScore / number + " " + ( (int)(0.3 * usualScore) + (int)(0.7 * finalScore)) / number); } else if (number!=0) { System.out.println(newClass.courses.get(i).getCourseName() + " " + usualScore / number + " " + finalScore / number + " " + (int)( (0.3 * usualScore) + (0.7 * finalScore)) / number); } } else if (newClass.courses.get(i).getExamWay().equals("考察")||newClass.courses.get(i).getExamWay().equals("实验")) { //课程为考察或者实验的时候 for (; j < allLesson.size(); j++) { if (allLesson.get(j).haveScore == 1) { if (allLesson.get(j).getCourse().getCourseName().equals(newClass.courses.get(i).getCourseName())) { finalScore = allLesson.get(j).getScore().getFinalScore() + finalScore; number = number + 1; } } } if (number!=0&&newClass.courses.get(i).getExamWay().equals("考察")) { System.out.println(newClass.courses.get(i).getCourseName() + " " + finalScore / number + " " + finalScore / number); } else if (newClass.courses.get(i).getExamWay().equals("实验")&&number!=0) { System.out.println(newClass.courses.get(i).getCourseName() + " " + finalScore / number); } } if(number==0) System.out.println(newClass.courses.get(i).getCourseName()+" has no grades yet"); } for (int i = 0; i < newClass.classes.size(); i++) { //输出每个班级的平均分 if(newClass.judgeClass[i]==0){ System.out.println(newClass.classes.get(i) + " has no grades yet"); }else{System.out.println(newClass.classes.get(i) + " " + newClass.classesAverageScore.get(i));} } } } class Class { ArrayList<Student> allStudent = new ArrayList<>(); //存入所有的学生 ArrayList<Integer> studentScore = new ArrayList<>(); //存入所有学生的平均分 int[] studentNumber; //放入每个学生考的科目数量 ArrayList<Course> courses = new ArrayList<>(); //存入课程的信息 ArrayList<String> classes = new ArrayList<>(); //存入班级的信息 ArrayList<Integer> classesAverageScore = new ArrayList<>(); //存入班级平均分的信息 int[] classNumber; //班级的人数 int[] judgeStudent; //判断一个学生的成绩是否合法 int[] judgeCourse; int[] judgeClass; //判断一个班级的成绩输出 public Class() { } } class Course { private String courseName; //课程名字 private String examWay; //考试方法 private String type; //类型 public Course() { } public boolean judgeIn(String examWay,String type){ //判断输入的课程信息是否合法 if(examWay.equals("考试")&&type.equals("必修")){ return true; } else if (examWay.equals("实验")&&type.equals("实验")) { return true; } else if (type.equals("选修")&&(examWay.equals("考试")||examWay.equals("考察"))) { return true; }else return false; } public String getCourseName() { return courseName; } public void setCourseName(String courseName) { this.courseName = courseName; } public void setType(String type) { this.type = type; } public String getExamWay() { return examWay; } public void setExamWay(String examWay) { this.examWay = examWay; } } class ExamScore extends Score{ private int usualPerformance=0; //平时分 public ExamScore() { } public ExamScore(int usualPerformance,int finalScore){ this.setFinalScore(finalScore); this.setUsualPerformance(usualPerformance); this.setTotalScore(calculateTotalScore()); } @Override public int calculateTotalScore() { return (int)(usualPerformance*0.3+this.getFinalScore()*0.7); } //计算出总成绩 public int getUsualPerformance() { return usualPerformance; } public void setUsualPerformance(int usualPerformance) { this.usualPerformance = usualPerformance; } } class InspectScore extends Score { public InspectScore(int score){ this.setFinalScore(score); this.setTotalScore(score); } @Override public int calculateTotalScore() { return this.getFinalScore(); } } class Lesson { private Course course; //课程信息 private Student student; //学生信息 private Score score;//分数信息 int haveScore=1;//判断是否有分数 public Lesson(String number, String name) { this.student = new Student(number, name); this.score = new ExamScore(); } public void setLesson(Course course, String[] str) { //将输入的分数数据放入 this.course = course; if (course.getExamWay().equals("考察")) { this.score = new InspectScore(Integer.parseInt(str[3])); } else if (course.getExamWay().equals("考试")) { this.score = new ExamScore(Integer.parseInt(str[3]), Integer.parseInt(str[4])); }else if(course.getExamWay().equals("实验")){ int sum=0; //实验的总分 int number=0; //实验的次数 for(int i=4;i<str.length;i++){ //遍历所有实验成绩 sum=sum+Integer.parseInt(str[i]); number++; } this.score=new InspectScore(sum/number); } } public Course getCourse() { return course; } public Student getStudent() { return student; } public Score getScore() { return score; } public ExamScore getExamScore() { return (ExamScore) this.score; } public void setCourse(Course course) { this.course = course; } } abstract class Score { private int finalScore=0; //期末成绩 private int totalScore=0; //总分 public abstract int calculateTotalScore(); //计算总分的抽象方法 public Score() { } public int getFinalScore() { return finalScore; } public void setFinalScore(int finalScore) { this.finalScore = finalScore; } public int getTotalScore() { return totalScore; } public void setTotalScore(int totalScore) { this.totalScore = totalScore; } } class Student { private String number; //学号 private String name; //姓名 public Student() { } public Student(String number, String name) { this.number = number; this.name = name; } public String getNumber() { return number; } public String getName() { return name; } }
本次课程统计系统在之前题目集的基础上加入了一个实验课，实验课的成绩是取所有实验成绩再取平均值，所有最后的成绩也就只有一个，所以将其编入到InspectScore对象中，在Lesson中改setLesson()方法，判断是实验课的时候，计算出实验课的平均分，再创建一个对象InspectScore，之后的实验课成绩与考察所得的成绩无异，将其当做考察的成绩使用以及输出即可。
SourceMonitor的生成报表内容
PowerDesigner生成内容
根据生成的数据可知，代码质量一般，不是非常高，对代码冗长方面还可以提高。
题目集十一课程成绩统计程序-3
import java.util.ArrayList; import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner input = new Scanner(System.in); ArrayList<Course> allCourse = new ArrayList<>(); Class newClass = new Class(); String string1; while (true) { Course course = new Course(); String string = input.nextLine(); String str[] = string.split(" "); if (str[0].matches("^\\d{8}$") || string.equals("end")) { string1 = string; break; } if ((str[2].equals("实验")&&str[1].equals("实验")&&str.length<4)||((str[2].equals("考试")||str[2].equals("考察"))&&str.length!=3)||((str[1].equals("必修") || str[1].equals("选修")) && str.length != 3) || (!str[1].equals("必修") && !str[1].equals("选修") && !str[1].equals("实验")) || (!str[2].equals("考察") && !str[2].equals("考试") && !str[2].equals("实验"))) { //判断课程信息输入错误的情况 if (!str[0].matches("^\\d{8}$") && !string.equals("end")) { System.out.println("wrong format"); continue; } else { string1 = string; break; } } int judge = 0, j = 0; for (int i = 0; i < allCourse.size(); i++) { //判断输入得到的课程之前是否有输入过 if (allCourse.get(i).getCourseName().equals(str[0])) { judge = 1; j = i; } } if ( !Course.judgeIn(str[2], str[1])) { System.out.println(str[0] + " : course type & access mode mismatch");//课程已经输入过的情况并且不匹配 continue; } if (str[2].equals("实验") && Integer.parseInt(str[3]) != (str.length - 4)) { //次数与权重数不匹配的情况 System.out.println(str[0] + " : number of scores does not match"); continue; } if (str[1].equals("实验")) { double portion = 0.0; for (int i = 4; i < str.length; i++) { portion = portion + Double.parseDouble(str[i]); } if (1.0-portion>0.000000005||portion-1.0>0.0000000005) { System.out.println(str[0] + " : weight value error"); continue; } if(Integer.parseInt(str[3])<4||Integer.parseInt(str[3])>9){ System.out.println("wrong format"); continue; } } if (judge != 1) { allCourse = courseInput(course, allCourse, str); //课程没有输入过的情况 } } newClass.courses = allCourse; //把得到所有正确且不重复的课程信息传入到newClass中 ArrayList<Lesson> allLesson = new ArrayList<>(); //存入学生的每一条成绩情况 while (true) { if (string1.equals("end")) { break; } String[] str = string1.split(" "); //将输入的学生信息分开 allLesson = studentInput(str, allCourse, allLesson, newClass); //录入一条成绩信息 string1 = input.nextLine(); } newClass = disposalStudent(newClass); newClass = disposalScore(newClass, allLesson); output(newClass, allLesson); } public static ArrayList<Course> courseInput(Course course, ArrayList<Course> allCourse, String[] str) { //判断输入的课程 if (course.judgeIn(str[2], str[1])) { //判断课程的类型是否符合标准 if (str[0].length() > 10) { //课程名超限 System.out.println("wrong format"); } else { course.setCourseName(str[0]); //存入课程 course.setType(str[1]); course.setExamWay(str[2]); course.setCourse(str); allCourse.add(course); } } else { System.out.println(str[0] + " : course type & access mode mismatch"); } //输出课程不匹配的情况 return allCourse; } public static boolean judgeSameStudent(Class newclass, String[] str) { for (int i = 0; i < newclass.allStudent.size(); i++) { if (newclass.allStudent.get(i).getNumber().equals(str[0]) && newclass.allStudent.get(i).getName().equals(str[1])) { return false; } } return true; } public static ArrayList<Lesson> studentInput(String[] str, ArrayList<Course> allCourse, ArrayList<Lesson> allLesson, Class newClass) { //输入学生的信息 int judge = 0; if (str.length > 3) { //匹配成绩 for (int i = 3; i < str.length; i++) { if (!str[i].matches("^[0-9]*$") || str[i].matches("\\s*")) { judge = 1; } } } if (judge == 1) { //成绩非法输入的情况 System.out.println("wrong format"); return allLesson; } if ((!str[0].matches("^\\d{8}$") || str[1].length() > 10) || (str.length == 4 && Integer.parseInt(str[3]) > 100) || (str.length == 5 && (Integer.parseInt(str[3]) > 100 || Integer.parseInt(str[4]) > 100)) || str.length < 3) { //必修课和选修课成绩超限情况 System.out.println("wrong format"); return allLesson; } for (int i = 3; i < str.length; i++) { //判断实验成绩和次数是否超限 if (Integer.parseInt(str[i]) > 100) { System.out.println("wrong format"); return allLesson; } } if (!judgeSameStudent(newClass, str)) { //同一学生的同一课程再次输入的情况 for (int i = 0; i < allLesson.size(); i++) { if (allLesson.get(i).getCourse().getCourseName().equals(str[2])) { return allLesson; } } } Lesson lesson = new Lesson(str[0], str[1]); //新lesson中存入学生的基本信息 int i = 0; for (; i < allCourse.size(); i++) { if (allCourse.get(i).getCourseName().equals(str[2])) { if ((allCourse.get(i).getExamWay().equals("实验")&&str.length != allCourse.get(i).CourseWeight.length + 3)||(allCourse.get(i).getExamWay().equals("考察") && str.length != 4) || (allCourse.get(i).getExamWay().equals("考试") && str.length != 5)) { //输入的成绩数目不符合的情况 System.out.println(str[0] + " " + str[1] + " : access mode mismatch"); lesson.haveScore = 0; lesson.setCourse(allCourse.get(i)); break; } else { //录入成绩信息 lesson.setLesson(allCourse.get(i), str); if (allCourse.get(i).getExamWay().equals("实验")) { lesson.getCourseScore().setWeight(allCourse.get(i).CourseWeight); } lesson.getCourseScore().getFinalScore(); break; } } } if (!newClass.classes.contains(str[0].substring(0, 6))) { //若不存在班级号就存入班级号 newClass.classes.add(str[0].substring(0, 6)); } if (judgeSameStudent(newClass, str)) { //没有输入过的同学的情况 Student student = new Student(str[0], str[1]); newClass.allStudent.add(student); } if (i == allCourse.size()) { //没有找课程的信息 System.out.println(str[2] + " does not exist"); lesson.haveScore = 0; Course course = new Course(); course.setCourseName(str[2]); lesson.setCourse(course); } allLesson.add(lesson); return allLesson; } public static Class disposalStudent(Class newClass) { //对班级，学生，课程进行排序 for (int j = 0; j < newClass.allStudent.size(); j++) { //对学生进行排序 for (int i = 0; i < newClass.allStudent.size() - 1; i++) { if (Integer.parseInt(newClass.allStudent.get(i).getNumber()) > Integer.parseInt(newClass.allStudent.get(i + 1).getNumber())) { Student newStudent = newClass.allStudent.get(i); newClass.allStudent.set(i, newClass.allStudent.get(i + 1)); newClass.allStudent.set(i + 1, newStudent); } } newClass.studentScore.add(0); //设置学生数组的分数 } for (int j = 0; j < newClass.courses.size(); j++) { //对课程进行排序 for (int i = 0, k = 0; i < newClass.courses.size() - 1; i++) { k = 0; if (!newClass.courses.get(i + 1).getCourseName().matches("[\\u4e00-\\u9fa5]+") && !newClass.courses.get(i).getCourseName().matches("[\\u4e00-\\u9fa5]+") && newClass.courses.get(i).getCourseName().compareToIgnoreCase(newClass.courses.get(i + 1).getCourseName()) > 0) { k = 1; } if (newClass.courses.get(i).getCourseName().compareTo(newClass.courses.get(i + 1).getCourseName()) < 0 && newClass.courses.get(i + 1).getCourseName().matches("[\\u4e00-\\u9fa5]+") && newClass.courses.get(i).getCourseName().matches("[\\u4e00-\\u9fa5]+")) { k = 1; } if (!newClass.courses.get(i + 1).getCourseName().matches("[\\u4e00-\\u9fa5]+") && newClass.courses.get(i).getCourseName().matches("[\\u4e00-\\u9fa5]+")) { k = 1; } if (k == 1) { Course course = newClass.courses.get(i); newClass.courses.set(i, newClass.courses.get(i + 1)); newClass.courses.set(i + 1, course); } } } for (int j = 0; j < newClass.classes.size(); j++) { //对班级进行排序 for (int i = 0; i < newClass.classes.size() - 1; i++) { if (Integer.parseInt(newClass.classes.get(i)) > Integer.parseInt(newClass.classes.get(i + 1))) { String string = newClass.classes.get(i); newClass.classes.set(i, newClass.classes.get(i + 1)); newClass.classes.set(i + 1, string); } } newClass.classesAverageScore.add(0); //设置班级数组的分数 } newClass.classNumber = new int[newClass.classes.size()]; newClass.studentNumber = new int[newClass.allStudent.size()]; newClass.judgeClass = new int[newClass.classes.size()]; newClass.judgeStudent = new int[newClass.allStudent.size()]; return newClass; } public static Class disposalScore(Class newClass, ArrayList<Lesson> allLesson) { //计算分数 for (int i = 0; i < allLesson.size(); i++) { //对所有输入的成绩进行遍历 if (allLesson.get(i).haveScore == 1) { for (int j = 0; j < newClass.allStudent.size(); j++) { //遍历班级所有的学生 if (allLesson.get(i).getStudent().getNumber().equals(newClass.allStudent.get(j).getNumber())) { newClass.studentScore.set(j, allLesson.get(i).getCourseScore().finalScore + newClass.studentScore.get(j)); newClass.studentNumber[j] = newClass.studentNumber[j] + 1; newClass.judgeStudent[j] = 1; } } for (int j = 0; j < newClass.classes.size(); j++) { //遍历所有的班级，统计分数 if (allLesson.get(i).getStudent().getNumber().substring(0, 6).equals(newClass.classes.get(j))) { newClass.classesAverageScore.set(j, allLesson.get(i).getCourseScore().finalScore + newClass.classesAverageScore.get(j)); newClass.classNumber[j] = newClass.classNumber[j] + 1; newClass.judgeClass[j] = 1; } } } } for (int i = 0; i < newClass.classes.size(); i++) { //计算出每个班的平均分 if (newClass.judgeClass[i] == 1) { newClass.classesAverageScore.set(i, newClass.classesAverageScore.get(i) / newClass.classNumber[i]); } } for (int i = 0; i < newClass.allStudent.size(); i++) { //计算出每个学生的平均分 if (newClass.judgeStudent[i] == 1) { newClass.studentScore.set(i, newClass.studentScore.get(i) / newClass.studentNumber[i]); } } return newClass; } public static void output(Class newClass, ArrayList<Lesson> allLesson) { for (int i = 0; i < newClass.studentScore.size(); i++) { //对每个录入成绩的学生进行输出 if (newClass.judgeStudent[i] == 0) { System.out.println(newClass.allStudent.get(i).getNumber() + " " + newClass.allStudent.get(i).getName() + " did not take any exams"); } else { System.out.println(newClass.allStudent.get(i).getNumber() + " " + newClass.allStudent.get(i).getName() + " " + newClass.studentScore.get(i)); } } for (int i = 0; i < newClass.courses.size(); i++) { //输出每个课程的分数 int finalScore = 0; int number = 0; int j = 0; if (newClass.courses.get(i).getExamWay().equals("考试")) { //课程为考试的时候 int usualScore = 0; for (; j < allLesson.size(); j++) { if (allLesson.get(j).haveScore == 1) { if (allLesson.get(j).getCourse().getCourseName().equals(newClass.courses.get(i).getCourseName())) { usualScore = allLesson.get(j).getCourseScore().singleScores.get(0).getScore() + usualScore; finalScore = allLesson.get(j).getCourseScore().singleScores.get(1).getScore() + finalScore; number = number + 1; } } } if (number != 0 && newClass.courses.get(i).getCourseName().equals("编译原理")) { System.out.println(newClass.courses.get(i).getCourseName() + " " + usualScore / number + " " + finalScore / number + " " + ((int) (0.3 * usualScore) + (int) (0.7 * finalScore)) / number); } else if (number != 0 && !newClass.courses.get(i).getCourseName().equals("编译原理")) { System.out.println(newClass.courses.get(i).getCourseName() + " " + usualScore / number + " " + finalScore / number + " " +(int) ((0.3 * usualScore) + (0.7 * finalScore)) / number); } } else if (newClass.courses.get(i).getExamWay().equals("考察") || newClass.courses.get(i).getExamWay().equals("实验")) { //课程为考察或者实验的时候 for (; j < allLesson.size(); j++) { if (allLesson.get(j).haveScore == 1) { if (allLesson.get(j).getCourse().getCourseName().equals(newClass.courses.get(i).getCourseName())) { finalScore = allLesson.get(j).getCourseScore().finalScore + finalScore; number = number + 1; } } } if (number != 0 && newClass.courses.get(i).getExamWay().equals("考察")) { System.out.println(newClass.courses.get(i).getCourseName() + " " + finalScore / number + " " + finalScore / number); } else if (newClass.courses.get(i).getExamWay().equals("实验") && number != 0) { System.out.println(newClass.courses.get(i).getCourseName() + " " + finalScore / number); } } if (number == 0) System.out.println(newClass.courses.get(i).getCourseName() + " has no grades yet"); } for (int i = 0; i < newClass.classes.size(); i++) { //输出每个班级的平均分 if (newClass.judgeClass[i] == 0) { System.out.println(newClass.classes.get(i) + " has no grades yet"); } else { System.out.println(newClass.classes.get(i) + " " + newClass.classesAverageScore.get(i)); } } } } class Class { ArrayList<Student> allStudent = new ArrayList<>(); //存入所有的学生 ArrayList<Integer> studentScore = new ArrayList<>(); //存入所有学生的平均分 int[] studentNumber; //放入每个学生考的科目数量 ArrayList<Course> courses = new ArrayList<>(); //存入课程的信息 ArrayList<String> classes = new ArrayList<>(); //存入班级的信息 ArrayList<Integer> classesAverageScore = new ArrayList<>(); //存入班级平均分的信息 int[] classNumber; //班级的人数 int[] judgeStudent; //判断一个学生的成绩是否合法 int[] judgeCourse; int[] judgeClass; //判断一个班级的成绩输出 public Class() { } } class Course { private String courseName; //课程名字 private String examWay; //考试方法 private String type; //类型 double[] CourseWeight; public Course() { } public void setCourseWeight(double[] doubles){ CourseWeight=doubles; } public void setCourse(String[] str){ if(examWay.equals("考试")){ double[] newDouble=new double[]{1.0}; this.setCourseWeight(newDouble); } else if (examWay.equals("考察")) { double[] newDouble=new double[]{0.3,0.7}; this.setCourseWeight(newDouble); } else if (examWay.equals("实验")) { double[] newDouble=new double[str.length-4]; for(int i=0;i<str.length-4;i++){ newDouble[i]=Double.parseDouble(str[i+4]); } this.setCourseWeight(newDouble); } } public static boolean judgeIn(String examWay,String type){ //判断输入的课程信息是否合法 if(examWay.equals("考试")&&type.equals("必修")){ return true; } else if (examWay.equals("实验")&&type.equals("实验")) { return true; } else if (type.equals("选修")&&(examWay.equals("考试")||examWay.equals("考察"))) { return true; }else return false; } public String getCourseName() { return courseName; } public void setCourseName(String courseName) { this.courseName = courseName; } public void setType(String type) { this.type = type; } public String getExamWay() { return examWay; } public void setExamWay(String examWay) { this.examWay = examWay; } } class CourseScore { ArrayList<SingleScore> singleScores=new ArrayList<>(); int finalScore; public CourseScore(String[] str,String string) { if(string.equals("考试")) { singleScores.add(new SingleScore(0.3, Integer.parseInt(str[3]))); singleScores.add(new SingleScore(0.7, Integer.parseInt(str[4]))); } else if (string.equals("考察")) { singleScores.add(new SingleScore(1, Integer.parseInt(str[3]))); } else if (string.equals("实验")) { for(int i=3;i< str.length;i++){ singleScores.add(new SingleScore(0.0,Integer.parseInt(str[i]))); } } } public void setWeight(double[] doubles){ for(int i=0;i<doubles.length;i++){ singleScores.get(i).setWeight(doubles[i]); } } public int getFinalScore(){ double sum=0; for (SingleScore singleScore : singleScores) { sum=sum+singleScore.getScore()*singleScore.getWeight(); } finalScore=(int) sum; return (int)sum; } } class Lesson { private Course course; //课程信息 private Student student; //学生信息 private CourseScore courseScore;//分数信息 int haveScore=1;//判断是否有分数 public Lesson(String number, String name) { this.student = new Student(number, name); } public Lesson() { } public Lesson(Course course, Student student, CourseScore courseScore, int haveScore) { this.course = course; this.student = student; this.courseScore = courseScore; this.haveScore = haveScore; } public void setLesson(Course course, String[] str) { //将输入的分数数据放入 this.course = course; if (course.getExamWay().equals("考察")) { this.courseScore=new CourseScore(str,"考察"); } else if (course.getExamWay().equals("考试")) { this.courseScore=new CourseScore(str,"考试"); }else if(course.getExamWay().equals("实验")){ this.courseScore=new CourseScore(str,"实验"); } } public Course getCourse() { return course; } public Student getStudent() { return student; } public void setCourse(Course course) { this.course = course; } public void setStudent(Student student) { this.student = student; } public CourseScore getCourseScore() { return courseScore; } } class SingleScore { private double weight=0; private int score=0; public SingleScore() { } public SingleScore(double weight, int score) { this.weight = weight; this.score = score; } public double getWeight() { return weight; } public void setWeight(double weight) { this.weight = weight; } public int getScore() { return score; } } class Student { private String number; //学号 private String name; //姓名 public Student() { } public Student(String number, String name) { this.number = number; this.name = name; } public String getNumber() { return number; } public String getName() { return name; } }
在题目集十的基础上修改类结构，将成绩类的继承关系改为组合关系，成绩信息由课程成绩类和分项成绩类组成，课程成绩类组合分项成绩类，分项成绩类由成绩分值和权重两个属性构成，
对象SingleScore的属性有一项成绩的分值以及其所占的权重，CourseScore对象中则有一个SingleScore对象的ArrayList数组来存储一个科目的各项成绩，在录入考试的课程的时候，自动给其赋予平时分和期末考试所占的权重，而在录入实验课的课程时，录入其中所占的各项比例，并将其存入到Course对象的一个double数组之中，需要判断录入的double数组各数加起来是否权值为1，否则是为输入错误，修改了实验课课程的录入，录入时录入相应实验课的权重并录入实验的次数，转而在录入学生信息的时候不再录入实验课的次数，而是只录入成绩，比对录入的成绩个数与该实验课所需成绩个数是否一致，否则为输入错误。
SourceMonitor的生成报表内容
PowerDesigner生成内容
根据生成的数据分析可知，代码太过冗长，复杂度较高，以导致代码的质量低下，之后还得多加思索，运用更加巧妙的方法来对所需进行实践，避免代码太过复杂，冗长。
踩坑心得：
问题1：一开始我将double数组之中的所有数值加起来，再判断其是否等于一，以此来判断输入的权重是否有问题，虽然没有报错，但就算输入的权重数值最后加起来的结果为一，但仍然会进入到if语句之中。
解决方法：double属于floating binary point types，double型在运算使会先将数值转换成二进制的数值表示再做运算，但是在转换成二进制代码表示的时候，存储小数部分的位数会有不够的现象，即无限循环小数，故会有非常小的误差，但此时若进行==的判断则会出问题，修改if的判断方法，让其大于或小于一个误差值，以此用来判断。
改进建议：
1.
一开始定义的classNumber，judgeStudent，judgeCourse，judgeClass与classesAverageScore一样都是定义为ArrayList对象，但一开始的时候并不知道学生，课程和班级的个数，就无法初始化，而且就算知道了个数之后，一开始需要给所有的数组对象中的值都赋值为0，这样用ArrayLsit对象使用起来就比较困难，需要遍历，然后一个个赋值，这样做法较为复杂，而若是运用int类型的数组的话，直接初始化即可给所有的int数组之中的值赋值为0，不用再进行操作。
总结：经过这几次pta对菜单计价程序以及课程成绩统计系统的一次次迭代，使我对代码书写的逻辑更加清晰，对相应程序需要设计出来相应功能的设计的能力更强，一开始写菜单计价程序的时候会觉得很无力，没有方向，导致第一次写菜单计价程序的时候花费了极其久的时候，而对于这一次课程成绩统计系统，我则写得更加清晰快速，也不会像之前菜单计价程序那样一股脑将所有的代码写到main中，显得非常凌乱，而这次我则是将各个功能定义相应的函数模块化，这样整体代码看起来就会非常清晰，而且对于迭代的修改，修改起来也只需去对应的功能去修改，而且对重构改良程序的认识有进一步提高。而且还在这几次的题目集之中学习和练习了栈的使用还有map对象的使用。本门课程的采取了边讲便教学的方法，在上课的时候老师在边讲的时候示范书写代码指引我们学生对Java知识的进一步指引，这样的讲解方法更能提高我们都知识的理解，上课的时候只讲解课程之中的难点，对于简单的基础关于Java的语法知识就需要我们学生通过自己去自学了解，我认为这样的教学方法很好，若是在课上都讲解那些基础的语法知识，而这些知识都是以我自己去自学能够轻松了解的，那课上则会变得枯燥，也是浪费了课上的时间，如此之下，也能很好地锻炼我们学生的自学基础语言的能力，为以后对于其他片成语言的学生打下基础，课程之后还有pta训练集对我们对课程的学习进行巩固和加深，我认为pta的题目集可以稍微再增加多一些难度，不需要太为简单的题目用来训练，只有难才能引发我们去思考，对知识点有更进一步的了解，我们书写代码的能力才进一步地提高。