第二次大作业博客分析
菜单计价程序—4
一丶错误分析：
1.这一题的测试点很多，在做的时候没有理清逻辑，导致在解决了部分测试点后，当尝试通过剩余测试点时，总会影响到之前的测试点通过。
2.对于格式处理时单一的通过·split空格，判断共有几段字符串。后改为正则表达式，但正则表达式规则写的太松。事实上正则表达式没起到什么筛选的作用。
3.特色菜的计价是单独计价，打折只看是否在周六日。这一点困惑很久。
二丶总体分析
1.题目没有刚开始做的时候有阻力。很快就100了。很高兴在这道题里掌握了正则表达式的基本规则，感受到了正则表达式的方便与强大。
2.主类过长，应当提取。可将输入的错误分析单独提取成一个类，输出类单独提取成一个类。后续的菜单计价程序-5做到了。
三丶类设计：
菜品类：
1 class Dish { 2 String name;//菜品名称 3 boolean isSpecial = false;//是不是特色菜 4 int unit_price; //单价 5 boolean exist = true; 6 //int num; 7 8 int getPrice(int portion) { 9 int peic = 0; 10 if (portion == 1) { 11 peic = unit_price ; 12 } else if (portion == 2) { 13 peic = Math.round((float) (unit_price * 1.5)) ; 14 } else if (portion == 3) { 15 peic = (unit_price * 2) ; 16 } 17 return peic;//计算菜品价格的方法，输入参数是点菜的份额（输入数据只能是1/2/3，代表小/中/大份） 18 } 19 }
菜单类：
class Menu { Dish[] dishs = new Dish[10];//菜品数组，保存所有菜品信息 int count = 0; Dish searthDish(String dishName){ Dish temd = null; for(int i=count-1;i>=0;i--){ if(dishName.equals(dishs[i].name)&&dishs[i].exist){ temd = dishs[i]; break; } } if(temd==null){ System.out.println(dishName+" does not exist"); } return temd; }//根据菜名在菜谱中查找菜品信息，返回Dish对象。 Dish addDish(String dishName,int unit_price){ Dish dh = new Dish(); dh.name = dishName; dh.unit_price = unit_price; count++; if(unit_price<1||unit_price>300) { dh.exist = false; System.out.println(dishName+" price out of range "+unit_price); } return dh; }//添加一道菜品信息 }
订单记录类：
class Record { int orderNum;//序号\ Dish d = new Dish();//菜品\ int num = 0; int portion;//份额（1/2/3代表小/中/大份）\ boolean noNeed = true; int exist = 1; float realdiscnt = 1; //int asum = 0; boolean isTaked = false;//是否是给别人点的 int getPrice(){ return Math.round(d.getPrice(portion)*num); }//计价，计算本条记录的价格\ float Checkportion(float discnt){//数量输入检查，计算价格 if(portion>3||portion<1) { System.out.println(orderNum + " portion out of range " + portion); exist = 0; noNeed = false; }else if(num<1||num>15) { System.out.println(orderNum + " num out of range" +" "+num); exist = 0; noNeed = false; }else{ if(d.isSpecial) if(discnt==0.8F||discnt==0.6F) realdiscnt = 0.7F; if(exist==1&&!isTaked) { System.out.println(orderNum + " " + d.name + " " + getPrice()); } } return realdiscnt; } boolean Checkahead(){ if(num<1||num>15) { return false; }else if(portion>3||portion<1){ return false; } return true; } }
订单类：
class Order { Record[] records = new Record[100];//保存订单上每一道的记录 int count = 0;//订单数量 int Ordercnt = 0;//点菜点了分数 int getTotalPrice(){ int sum=0; for(int i=0;i<count;i++){ if(records[i].exist==0) continue; sum=sum+records[i].getPrice(); } return sum; }//计算订单的总价 Record addARecord(boolean istosum,int orderNum,String dishName,int portion,int num){ boolean flag = true; for(int i=0;i<count;i++){//不能点份额一样的菜 if(records[i].d.name.equals(dishName)&&records[i].portion==portion) flag = false; } count++; records[count] = new Record(); records[count].d.name = dishName; records[count].orderNum = orderNum; records[count].portion = portion; records[count].num = num; records[count].noNeed = flag; return records[count]; }//添加一条菜品信息到订单中。 Record TakeOdfor(int mynum,Table[] table, int AnotherNum, int orderNum, String dishName, int portion, int num){ boolean flag = false; for(Table t : table) { if(t==null) continue; if (t.tableNum != mynum&&t.tableNum==AnotherNum) { flag = true; break; } } if(flag == true) { count++; records[count] = new Record(); records[count].d.name = dishName; records[count].orderNum = orderNum; records[count].portion = portion; records[count].num = num; return records[count]; }else{ System.out.println("Table number ：" + AnotherNum + " does not exist"); return null; } } void delARecordByOrderNum(int orderNum){ if(orderNum>count||orderNum<=0){ System.out.println("delete error;"); return; }else { if(records[orderNum-1].exist==0) { System.out.println("deduplication "+orderNum); return; } records[orderNum-1].exist = 0; } }//根据序号删除一条记录 }
桌类：
class Table { int tableNum; boolean inputIsvalid = false; boolean istoSum = false;//判断是否要合并计算 String tableDtime; int year,month,day,week,hh,mm,ss; int sum = 0;//一桌价格 ； int primesum = 0; Order odt = new Order(); float discnt = -1; float rediscnt = 1; void Gettottalprice(){ if(discnt>0){ primesum = odt.getTotalPrice(); if(primesum==0) sum=0; System.out.println("table " + tableNum + ": " +primesum+" "+sum); } } void AheadProcess(String tableDtime){ this.tableDtime = tableDtime; processTime(); discount(); } void processTime(){//处理时间 String[] temp = tableDtime.split(" "); tableNum = Integer.parseInt(temp[1]); String[] temp1 = temp[2].split("/"); String[] temp2 = temp[3].split("/"); year = Integer.parseInt(temp1[0]); month = Integer.parseInt(temp1[1]); day = Integer.parseInt(temp1[2]); Calendar c = Calendar.getInstance(); c.set(year, (month-1), day); week = c.get(Calendar.DAY_OF_WEEK); if(week==1) week = 7; else week--; hh = Integer.parseInt(temp2[0]); mm = Integer.parseInt(temp2[1]); ss = Integer.parseInt(temp2[2]); } boolean DateisValid(){ if(year<1000) return false; if(month<1||month>12) return false; YearMonth mytime = YearMonth.of(year,month); if(!mytime.isValidDay(day)) return false; return true; } boolean Daterande(){ boolean flag = true; if(year<2022||year>2023) { flag = false; } if(flag==false){ System.out.println("not a valid time period"); inputIsvalid = false; } return flag; } void discount(){ if(week>=1&&week<=5) { if(hh>=17&&hh<20) discnt=0.8F; else if(hh==20&&mm<30) discnt=0.8F; else if(hh==20&&mm==30&&ss==0) discnt=0.8F; else if(hh>=11&&hh<=13||hh==10&&mm>=30) discnt=0.6F; else if(hh==14&&mm<30) discnt=0.6F; else if(hh==14&&mm==30&&ss==0) discnt=0.6F; } else { if(hh>=10&&hh<=20) discnt= 1.0F; else if(hh==9&&mm>=30) discnt= 1.0F; else if(hh==21&&mm<30||hh==21&&mm==30&&ss==0) discnt= 1.0F; } } boolean CheckSameTime(Table table){ if(tableNum!=table.tableNum) return false; if(week==table.week&&week>=1&&week<=5){ if(discnt==table.discnt) return true; else return false; }else if(week==table.week&&week==6||week==7){ int subtime = hh*3600+mm*60+ss-table.hh*3600-table.mm*60-ss; if(Math.abs(subtime)<3600) return true; else return false; } return false; } }
主类：
public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); Menu mu = new Menu(); Table[] tablemes = new Table[57];//桌号1-55； int j = 0;//菜单数 int l = 0;//订单数 int k = 0;//代点菜数 int z = 1;//遍历桌 int cntTab = 0;//桌号 String[] temp;//字符串存储 int tempordernum = 0;//临时存上一个有效序号 String input; String regex = "[\\u4e00-\\u9fa5]{0,}[ ]\\d{0,}";//非特色菜菜谱 String regex1 = "[\\u4e00-\\u9fa5]{0,}[ ]\\d{0,}[ ][T]";//特色菜谱 String regex2 = "\\d[ ](delete)";//删除情况 String regex3 = "(table)[ ]([1-4][0-9]*|[5][0-5]*)[ ]\\d{4}[/]\\d{1,}[/]\\d{1,2}[ ]([0-1]?[0-9]|2[0-3])/([0-5][0-9])/([0-5][0-9])";//添桌子的情况 String regex4 = "([1-9]|[1-9][0-9]*)[ ][\\u4e00-\\u9fa5]{1,}[ ]\\d{1,}[ ]\\d{1,}";//点菜记录的添加； String regex5 = "([1-4][0-9]*|[5][0-5]*|[1-9])[ ]\\d[ ][\\u4e00-\\u9fa5]{1,}[ ][123][ ]([1][0-5]|[1-9])";//代点菜 while (true) { int count = 0;//空格数量； input = sc.nextLine();//获取输入，每行 if(input.equals("end")) break; if(input.equals("")) { System.out.println("wrong format"); continue; } temp = input.split(" ");//分割 /* * 判断输入的类型*/ count = temp.length; /* if(input.contains("/")||temp[0].equals("table")) { cntTab++; tablemes[cntTab] = new Table(); }*/ if(count==2){//非特色菜菜谱，或者删除菜； if(input.matches(regex2)){//删除的情况桌子有效才删除 if(tablemes[cntTab].inputIsvalid){ tablemes[cntTab].odt.delARecordByOrderNum(Integer.parseInt(temp[0]));//删除 } }else if(input.matches(regex)){//非特色菜谱添加 if (cntTab == 0) { mu.dishs[j] = new Dish(); mu.dishs[j] = mu.addDish(temp[0], Integer.parseInt(temp[1])); j++; continue; } else if(tablemes[cntTab].inputIsvalid){ System.out.println("invalid dish"); } }else { System.out.println("wrong format"); continue; } }else if(count==3){//特色菜菜谱 if(input.matches(regex1)) { if(cntTab!=0) { if(tablemes[cntTab].inputIsvalid) System.out.println("invalid dish"); else continue; } mu.dishs[j] = new Dish(); mu.dishs[j] = mu.addDish(temp[0], Integer.parseInt(temp[1])); mu.dishs[j].isSpecial = true;//是特色菜 j++; continue; }else System.out.println("wrong format"); } //桌子的添加，点菜记录的添加， else if(temp[0].equals("table")||input.contains("/")) { cntTab++; tablemes[cntTab] = new Table(); if(temp[0].equals("table")){ if(input.matches(regex3)) tablemes[cntTab].AheadProcess(input); tablemes[cntTab].inputIsvalid=true; if (input.matches(regex3)) { if(tablemes[cntTab].inputIsvalid&&!tablemes[cntTab].DateisValid()){//检查日期 System.out.println(tablemes[cntTab].tableNum+" date error"); tablemes[cntTab].inputIsvalid=false; continue; } if(tablemes[cntTab].inputIsvalid&&!tablemes[cntTab].Daterande()){ tablemes[cntTab].inputIsvalid=false; continue; } for(int i =1;i<cntTab;i++){ if(z!=cntTab){ if(tablemes[i].inputIsvalid&&tablemes[cntTab].CheckSameTime(tablemes[i])) {//同一时间段 tablemes[cntTab].istoSum = true; tempordernum = 0; }else{ l=0; tempordernum = 0; } } } if(tablemes[cntTab].discnt>0) System.out.println("table " + tablemes[cntTab].tableNum + ": "); else { System.out.println("table " + tablemes[cntTab].tableNum + " out of opening hours"); tablemes[cntTab].inputIsvalid = false; } continue; } else {//第一个是table但不合法 tablemes[cntTab].inputIsvalid = false; if(!temp[1].equals("")&&temp[1].charAt(0)>='1'&&temp[1].charAt(0)<='9'&&!temp[1].contains("/")){ if(Integer.parseInt(temp[1])<1||Integer.parseInt(temp[1])>55){ System.out.println(Integer.parseInt(temp[1])+" table num out of range"); continue; } } } } System.out.println("wrong format"); tablemes[cntTab].inputIsvalid = false; if(!temp[0].equals("table")) tablemes[cntTab].istoSum = true; continue; }else if(count==4){ if(input.matches(regex4)&&(tablemes[cntTab].inputIsvalid||tablemes[cntTab].istoSum)){//点菜记录 Dish tem; int aheadcntTab = cntTab-1; boolean tem1; if(!tablemes[cntTab].istoSum) {//不需要合并 tablemes[cntTab].odt.records[l] = new Record(); tablemes[cntTab].odt.records[l] = tablemes[cntTab].odt.addARecord(tablemes[cntTab].istoSum,Integer.parseInt(temp[0]), temp[1], Integer.parseInt(temp[2]), Integer.parseInt(temp[3])); if(l-1>=0){//判断记录序号是否递增 if(Integer.parseInt(temp[0])<=tempordernum) { System.out.println("record serial number sequence error"); tablemes[cntTab].odt.records[l].exist=0; }else if(tablemes[cntTab].odt.records[l]!=null&&tablemes[cntTab].odt.records[l].noNeed) tempordernum = tablemes[cntTab].odt.records[l].orderNum; }else if(l==0){//特殊情况 if(tablemes[cntTab].odt.records[l].Checkahead()) tempordernum = tablemes[cntTab].odt.records[l].orderNum; } if((tem = mu.searthDish(temp[1]))!=null){ float temdiscnt;//临时储存折扣 tablemes[cntTab].odt.records[l].d = tem; temdiscnt = tablemes[cntTab].odt.records[l].Checkportion(tablemes[cntTab].discnt); if(temdiscnt!=1F) tablemes[cntTab].rediscnt = temdiscnt;//最终折扣 if(tablemes[cntTab].odt.records[l].exist==1&&tablemes[cntTab].odt.records[l].noNeed) { if(tablemes[cntTab].rediscnt!=1) { tablemes[cntTab].sum += Math.round(tablemes[cntTab].odt.records[l].getPrice() * tablemes[cntTab].rediscnt); tablemes[cntTab].rediscnt=1.0F; } else tablemes[cntTab].sum += Math.round(tablemes[cntTab].odt.records[l].getPrice() * tablemes[cntTab].discnt); } } if(!tablemes[cntTab].istoSum){//如果份额名字未重复； l++; } } else{//需要合并计算 tablemes[aheadcntTab].odt.records[l] = new Record(); tablemes[aheadcntTab].odt.records[l] = tablemes[aheadcntTab].odt.addARecord(tablemes[cntTab].istoSum,Integer.parseInt(temp[0]), temp[1], Integer.parseInt(temp[2]), Integer.parseInt(temp[3])); if(l-1>=0){//判断记录序号是否递增 if(Integer.parseInt(temp[0])<=tempordernum) { System.out.println("record serial number sequence error"); tablemes[aheadcntTab].odt.records[l].exist=0; }else if(tablemes[aheadcntTab].odt.records[l]!=null&&tablemes[aheadcntTab].odt.records[l].noNeed) tempordernum = tablemes[aheadcntTab].odt.records[l].orderNum; } if((tem = mu.searthDish(temp[1]))!=null){ float temdiscnt;//临时储存折扣 tablemes[aheadcntTab].odt.records[l].d = tem; temdiscnt = tablemes[aheadcntTab].odt.records[l].Checkportion(tablemes[aheadcntTab].discnt);//计算折扣 if(temdiscnt==0.7F)//如果需要调整 tablemes[aheadcntTab].rediscnt = temdiscnt;//最终折扣//更改折扣 if(tablemes[aheadcntTab].odt.records[l].exist==1) {//必须存在 if(tablemes[aheadcntTab].rediscnt!=1) { tablemes[aheadcntTab].sum += Math.round(tablemes[aheadcntTab].odt.records[l].getPrice() * tablemes[aheadcntTab].rediscnt); tablemes[aheadcntTab].rediscnt=1.0F; } else tablemes[aheadcntTab].sum += Math.round(tablemes[aheadcntTab].odt.records[l].getPrice() * tablemes[cntTab].discnt)-1; } } l++; } }else { if(tablemes[cntTab]==null) { System.out.println("wrong format"); continue; } if(tablemes[cntTab]!=null&&tablemes[cntTab].inputIsvalid) System.out.println("wrong format"); continue; } } else if(count==5&&tablemes[cntTab].inputIsvalid){//代点菜 int temSum = 0; if(input.matches(regex5)){ int AnothNum = Integer.parseInt(temp[0]); tablemes[cntTab].odt.records[l] = tablemes[cntTab].odt.TakeOdfor(tablemes[cntTab].tableNum,tablemes,AnothNum,Integer.parseInt(temp[1]),temp[2],Integer.parseInt(temp[3]),Integer.parseInt(temp[4])); Dish tem; if((tem = mu.searthDish(temp[2]))!=null&&tablemes[cntTab].odt.records[l]!=null){ tablemes[cntTab].odt.records[l].isTaked = true;//给别人diade float temdiscnt;//临时储存折扣 tablemes[cntTab].odt.records[l].d = tem; temdiscnt = tablemes[cntTab].odt.records[l].Checkportion(tablemes[cntTab].discnt); if(temdiscnt!=1F) tablemes[cntTab].rediscnt = temdiscnt;//最终折扣 if(tablemes[cntTab].odt.records[l].exist==1&&tablemes[cntTab].odt.records[l].noNeed) { if(tablemes[cntTab].rediscnt!=1) { tablemes[cntTab].sum += Math.round((temSum=tablemes[cntTab].odt.records[l].getPrice()) * tablemes[cntTab].rediscnt); tablemes[cntTab].rediscnt=1.0F; } else tablemes[cntTab].sum += Math.round((temSum =tablemes[cntTab].odt.records[l].getPrice()) * tablemes[cntTab].discnt); } System.out.println(temp[1] + " table " + tablemes[cntTab].tableNum + " pay for table " + temp[0] + " " + temSum); } if(tablemes[cntTab].odt.records[l]!=null) l++; }else System.out.println("wrong format"); }else{ if(tablemes[cntTab].inputIsvalid) System.out.println("wrong format"); } } for(int i=1;i<=cntTab;i++){ if(tablemes[i].inputIsvalid&&!tablemes[i].istoSum) tablemes[i].Gettottalprice(); } } }
菜单计价程序-5
一丶错误分析：
1.该题做的时候没什么阻力，主要的错误原因是因为这一次我改变了逻辑。之前是输入一条，判断一条，输出一条。这一次改成了集中输入输出。错误集中在输出顺序上，集中输入输出导致顺序没法精准判断。
2.个别偏刁的测试点最后才想到。
二丶总体分析：
1.这道题的主类简洁，输入输出分别提取到了两个类。再写的时候思路很清晰。是我最满意的一次题目，。
2.但没有很好的用到上课学的知识，比如新概念菜系，上课老师提出的运用继承的概念就是我没想到的。错误输出可以用try coath环绕。
三丶类设计：
1.菜单类：
class Dish { String name;//菜品名称 boolean exist;//是否存在 boolean isSpecial;//是不是特色菜 String style = "";//菜系 Dish(){ isSpecial = false; exist = true; } int unit_price;//单价 int getPrice(int portion) { int peic = 0; if (portion == 1) { peic = unit_price ; } else if (portion == 2) { peic = (int) Math.round((unit_price * 1.5)); } else if (portion == 3) { peic = (unit_price * 2) ; } return peic;//计算菜品价格的方法，输入参数是点菜的份额（输入数据只能是1/2/3，代表小/中/大份） } }
菜品类：
class Menu { Dish[] dishs = new Dish[50];//菜品数组，保存所有菜品信息 boolean isSp = false; int count = 0; Dish searthDish(String dishName){ Dish temd = null; for(int i=count-1;i>=0;i--){ if(dishName.equals(dishs[i].name)&&dishs[i].exist){ temd = dishs[i]; break; } } /*if(temd==null){ System.out.println(dishName+" does not exist"); }*/ return temd; }//根据菜名在菜谱中查找菜品信息，返回Dish对象。 void addDish(String dishName,int unit_price){ Dish dh = new Dish(); dh.name = dishName; dh.unit_price = unit_price; dishs[count] = dh; count++; }//添加一道菜品信息 void addDish(String dishName,String dishstyle,int unit_price){ Dish dh = new Dish(); dh.isSpecial = true; dh.name = dishName; dh.unit_price = unit_price; dh.style = dishstyle; dishs[count] = dh; count++; } }
订单记录类：
class Menu { Dish[] dishs = new Dish[50];//菜品数组，保存所有菜品信息 boolean isSp = false; int count = 0; Dish searthDish(String dishName){ Dish temd = null; for(int i=count-1;i>=0;i--){ if(dishName.equals(dishs[i].name)&&dishs[i].exist){ temd = dishs[i]; break; } } /*if(temd==null){ System.out.println(dishName+" does not exist"); }*/ return temd; }//根据菜名在菜谱中查找菜品信息，返回Dish对象。 void addDish(String dishName,int unit_price){ Dish dh = new Dish(); dh.name = dishName; dh.unit_price = unit_price; dishs[count] = dh; count++; }//添加一道菜品信息 void addDish(String dishName,String dishstyle,int unit_price){ Dish dh = new Dish(); dh.isSpecial = true; dh.name = dishName; dh.unit_price = unit_price; dh.style = dishstyle; dishs[count] = dh; count++; } }
订单类：
class Order { ArrayList<Record> records = new ArrayList<>(); HashMap<Integer,String> ResultFor = new HashMap<>(); HashMap<Integer,String> deletemes = new HashMap<>(); int count = 0;//订单数量 int getTotalPrice(){//总没算折扣 int sum=0; for(Record Re:records){ if(Re.exist==0||Re.isMyOrder==2) continue; sum=sum+ Re.getPrice(); } return sum; }//计算订单的总价 void addARecord(int orderNum,String dishName,int portion,int num){ records.add(count, new Record()); records.get(count).d.name = dishName; records.get(count).orderNum = orderNum; records.get(count).portion = portion; records.get(count).num = num; count++; }//添加一条菜品信息到订单中。 void addARecord(int orderNum,String dishName,int styleNum,int portion,int num){ records.add(count, new Record()); records.get(count).d.name = dishName; records.get(count).styleNum = styleNum; records.get(count).orderNum = orderNum; records.get(count).portion = portion; records.get(count).num = num; count++; } void TakeOdFor(int AnotherNum,int orderNum,String dishName,int styleNum,int portion,int num,ArrayList<Table> ta,Menu mu,int MyTabNum){ int flag = 0;//是否有这个号 for(Table T:ta){ if(T.tableNum==AnotherNum){ flag = 1; T.odt.addARecord(orderNum,dishName,styleNum,portion,num); Dish tem = mu.searthDish(dishName); if(tem!=null) T.odt.records.get(T.odt.count-1).d = tem; T.odt.records.get(T.odt.count-1).d.isSpecial = true; T.odt.records.get(T.odt.count-1).noNeed = false;//上一个不需要打印 T.odt.records.get(T.odt.count-1).isMyOrder = 2;//不算钱 算口味 ResultFor.put(records.size()+1,orderNum+" table "+MyTabNum+" pay for table "+AnotherNum+" "+T.odt.records.get(T.odt.count-1).getPrice()); } } if(flag==0&&ResultFor.containsKey(orderNum)){ ResultFor.put(orderNum,ResultFor.get(orderNum)+"\nwrong format"); } for(Table T:ta){ if(T.tableNum==MyTabNum){ T.TakeorderFor.add(AnotherNum); } } addARecord(orderNum,dishName,styleNum,portion,num);//给自己也点 records.get(count-1).noNeed = false;//不用打印出来 records.get(count-1).isMyOrder = 1;//算钱不算口味 } void delARecordByOrderNum(int orderNum,ArrayList<Table> Tab){ boolean isMyOrder; for(int i = 0;i<count;i++){ if(records.get(i).orderNum==orderNum&&records.get(i).exist==1) {//找到要删除的号 if(records.get(i).isMyOrder==1){//如果是给别人点的 for (Table T:Tab) {//遍历找一下被点的桌 for(Record R:T.odt.records){//遍历该桌的号 if(R.orderNum==orderNum&&R.isMyOrder==2){//如果满足条件 //T.odt.records.remove(R);//删除 R.exist=0; // ResultFor.remove(orderNum); R.deleted = false; } } } } records.get(i).exist = 0; records.get(i).deleted = false; return; } } if(!deletemes.containsKey(records.size()+1)) deletemes.put(records.size()+1,"delete error;"); else deletemes.put(records.size()+2,"delete error;"); }//根据序号删除一条记录 }
桌类：
class Table { int[] st = new int[3];//辣 酸 甜 int[] stSum = new int[3]; ArrayList<Integer> TakeorderFor = new ArrayList<>(); int tableNum;//桌号 String name;//点菜人姓名 String telephone;//电话号码 String tableDtime;//桌子点菜日期 int year,month,day,week,hh,mm,ss;//年月日 int sum = 0;//单独特色菜价格，没打折的 Order odt = new Order();//桌子的订单 float discnt = -1;//折扣 Table(int tableNum,String name,String telephone,String tableDtime){ this.tableNum = tableNum; this.name = name; this.telephone = telephone; this.tableDtime = tableDtime; processTime(); discount(); } int Gettottalprice(){//计算折扣价格 for(Record R: odt.records){ if(R.exist==1&&(R.isMyOrder==1||R.isMyOrder==0)) { if (R.d.isSpecial) { if (discnt == 0.8F || discnt == 0.6F) { sum += Math.round(R.getPrice() * 0.7F); } else { sum += Math.round(R.getPrice() * 1.0F); } } else { sum += Math.round(R.getPrice() * discnt); } } } return sum; } void processTime(){//处理时间 String[] temp = tableDtime.split(" "); String[] temp1 = temp[0].split("/"); String[] temp2 = temp[1].split("/"); year = Integer.parseInt(temp1[0]); month = Integer.parseInt(temp1[1]); day = Integer.parseInt(temp1[2]); Calendar c = Calendar.getInstance(); c.set(year, (month-1), day); week = c.get(Calendar.DAY_OF_WEEK); if(week==1) week = 7; else week--; hh = Integer.parseInt(temp2[0]); mm = Integer.parseInt(temp2[1]); ss = Integer.parseInt(temp2[2]); } void discount(){ if(week>=1&&week<=5) { if(hh>=17&&hh<20) discnt=0.8F; else if(hh==20&&mm<30) discnt=0.8F; else if(hh==20&&mm==30&&ss==0) discnt=0.8F; else if(hh>=11&&hh<=13||hh==10&&mm>=30) discnt=0.6F; else if(hh==14&&mm<30) discnt=0.6F; else if(hh==14&&mm==30&&ss==0) discnt=0.6F; } else { if(hh>=10&&hh<=20) discnt= 1.0F; else if(hh==9&&mm>=30) discnt= 1.0F; else if(hh==21&&mm<30||hh==21&&mm==30&&ss==0) discnt= 1.0F; } } }
输入类：
class InputProcess{ /* 特色菜 */ String rg0 = "[\\u4e00-\\u9fa5]{1,}[ ][\\u4e00-\\u9fa5]{2}[ ]\\d{1,}[ ][T]"; /* 普通菜 */ String rg1 = "[\\u4e00-\\u9fa5]{1,}[ ]\\d{1,}"; /* 桌子点菜 */ String rg2 = "(table)[ ]\\d{1,}[ ](:)[ ][a-z]{1,10}[ ](136|135|133|189|181|180)\\d{8}[ ]\\d{4}[/]\\d{1,}[/]\\d{1,2}[ ]([0-1]?[0-9]|2[0-3])/([0-5][0-9])/([0-5][0-9])"; /* 点特色菜，口味度 */ String rg3 = "\\d{1,}[ ][\\u4e00-\\u9fa5]{0,}[ ]\\d{1,}[ ]\\d{1,}[ ]\\d{1,}"; /* 非特色菜点菜 */ String rg4 = "\\d{1,}[ ][\\u4e00-\\u9fa5]{0,}[ ]\\d{1,}[ ]\\d{1,}"; /* 删除 */ String rg5 = "\\d{1,}[ ](delete)"; /* 结束 */ String rg6 = "(end)"; /* 代点菜 */ String rg7 = "([1-4][0-9]*|[5][0-5]*|[1-9])[ ]\\d[ ][\\u4e00-\\u9fa5]{1,}[ ]\\d{1,}[ ]([1][0-5]|[1-9])[ ]\\d{1,}"; int Tabcount = 0;//桌号 int RecoCount = 0;//订单数量 void process(String input,AheadProcess ap){ String tp[] = input.split(" "); if(input.matches(rg6)){ ap.IsEnd = false; }else if (input.matches(rg0)) {//特色菜：麻婆豆腐 川菜 12 T if(tp[1].equals("川菜")||tp[1].equals("晋菜")||tp[1].equals("浙菜")) ap.menu.addDish(tp[0],tp[1],Integer.parseInt(tp[2])); else System.out.println("wrong format"); } else if (input.matches(rg1)) {//普通菜 油淋生菜 9 ap.menu.addDish(tp[0],Integer.parseInt(tp[1])); } else if (input.matches(rg2)) {//添桌子 table 1 : tom 13605054400 2023/5/1 21/30/00 ap.tables.add(Tabcount, new Table(Integer.parseInt(tp[1]), tp[3], tp[4], tp[5] + " " + tp[6])); ap.tname.add(tp[3]); RecoCount = 0; Tabcount++; } else if (input.matches(rg3)) {//点特色菜，带口味度：1 麻婆豆腐 2 1 2 if(ap.tables.size()==0||Tabcount!=ap.tables.size()) return; ap.tables.get(Tabcount-1).odt.addARecord(Integer.parseInt(tp[0]),tp[1],Integer.parseInt(tp[2]),Integer.parseInt(tp[3]),Integer.parseInt(tp[4])); Dish temp = ap.menu.searthDish(tp[1]); if(temp!=null){ ap.tables.get(Tabcount-1).odt.records.get(RecoCount).d = temp; ap.tables.get(Tabcount-1).odt.records.get(RecoCount).styleNum = Integer.parseInt(tp[2]); }else { ap.tables.get(Tabcount-1).odt.records.get(RecoCount).exist = 0; } RecoCount++; } else if (input.matches(rg4)) {//非特色菜：2 油淋生菜 2 1 if(ap.tables.size()==0||Tabcount!=ap.tables.size()) return; ap.tables.get(Tabcount-1).odt.addARecord(Integer.parseInt(tp[0]),tp[1],Integer.parseInt(tp[2]),Integer.parseInt(tp[3])); Dish temp = ap.menu.searthDish(tp[1]); if(temp!=null){ ap.tables.get(Tabcount-1).odt.records.get(RecoCount).d = temp; }else { ap.tables.get(Tabcount-1).odt.records.get(RecoCount).exist = 0; } RecoCount++; } else if (input.matches(rg5)) {//删除：1 delete if(ap.tables.size()==0) return; ap.tables.get(Tabcount-1).odt.delARecordByOrderNum(Integer.parseInt(tp[0]),ap.tables); } else if (input.matches(rg7)) {//代点菜 1 1 醋浇羊肉 0 1 2 if(ap.tables.size()==0||Tabcount!=ap.tables.size()) return; ap.tables.get(Tabcount-1).odt.TakeOdFor(Integer.parseInt(tp[0]),Integer.parseInt(tp[1]),tp[2],Integer.parseInt(tp[3]),Integer.parseInt(tp[4]),Integer.parseInt(tp[5]),ap.tables,ap.menu,ap.tables.get(Tabcount-1).tableNum); Dish temp = ap.menu.searthDish(tp[2]); if(temp!=null){ ap.tables.get(Tabcount-1).odt.records.get(RecoCount).d = temp; ap.tables.get(Tabcount-1).odt.records.get(RecoCount).styleNum = Integer.parseInt(tp[3]); }else { ap.tables.get(Tabcount-1).odt.records.get(RecoCount).exist = 0; } RecoCount++; }else{ if(ap.tables.size()==0) System.out.println("wrong format"); else{ if(tp[0].equals("table")){ System.out.println("wrong format"); Tabcount++; }else{//桌子里有错误 ap.WrongF.put(RecoCount+1,"wrong format");//第Recount个有错误 } } } } }
输出类：
class OutputProcess { HashMap<Integer, String> Chuan = new HashMap<Integer, String>(); HashMap<Integer, String> Ji = new HashMap<Integer, String>(); HashMap<Integer, String> Zhe = new HashMap<Integer, String>(); HashMap<String, HashMap> dishstyles = new HashMap<String, HashMap>(); OutputProcess() { Chuan.put(0, "不辣"); Chuan.put(1, "微辣"); Chuan.put(2, "稍辣"); Chuan.put(3, "辣"); Chuan.put(4, "很辣"); Chuan.put(5, "爆辣"); Ji.put(0, "不酸"); Ji.put(1, "微酸"); Ji.put(2, "稍酸"); Ji.put(3, "酸"); Ji.put(4, "很酸"); Zhe.put(0, "不甜"); Zhe.put(1, "微甜"); Zhe.put(2, "稍甜"); Zhe.put(3, "甜"); dishstyles.put("川菜", Chuan); dishstyles.put("晋菜", Ji); dishstyles.put("浙菜", Zhe); } void outprocess(AheadProcess ap) { int Tcount = 0; for (Table T : ap.tables) { Tcount++; int Recount = 0;//订单数 if (T.discnt < 0) { System.out.println("table " + T.tableNum + " out of opening hours"); continue; } System.out.println("table " + T.tableNum + ": ");//桌号输出 for (Record R : T.odt.records) {//每条记录钱； Recount++; for(int key:T.odt.deletemes.keySet()){ if(Recount>key||Recount+1>key){ System.out.println(T.odt.deletemes.get(key)); T.odt.deletemes.remove(key); break; } } for(int key:ap.WrongF.keySet()){ if(Recount>key||Recount+1>key){ System.out.println(ap.WrongF.get(key)); ap.WrongF.remove(key); break; } } for(int key:T.odt.ResultFor.keySet()){ if(Recount>key||Recount+1>key) { System.out.println(T.odt.ResultFor.get(key)); T.odt.ResultFor.remove(key); break; } } if (R.exist == 0&&R.deleted) { System.out.println(R.d.name + " does not exist"); continue; } else if((R.isMyOrder==2||R.isMyOrder==0)&&R.deleted){ if (R.d.style.equals("川菜")) { if (R.styleNum < 0 || R.styleNum > 5) { System.out.println("spicy num out of range :" + R.styleNum); R.exist = 0; continue; } T.st[0]+=R.num; T.stSum[0] += R.styleNum*R.num; } else if (R.d.style.equals("晋菜")) { if (R.styleNum < 0 || R.styleNum > 4) { System.out.println("acidity num out of range :" + R.styleNum); R.exist = 0; continue; } T.st[1]+=R.num; T.stSum[1] += R.styleNum*R.num; } else if (R.d.style.equals("浙菜")) { if (R.styleNum < 0 || R.styleNum > 3) { System.out.println("sweetness num out of range :" + R.styleNum); R.exist = 0; continue; } T.st[2]+=R.num; T.stSum[2] += R.styleNum*R.num; } } if(R.noNeed) System.out.println(R.orderNum + " " + R.d.name + " " + R.getPrice()); } for (int key : T.odt.deletemes.keySet()) { System.out.println(T.odt.deletemes.get(key)); } for (int key : T.odt.ResultFor.keySet()) { System.out.println(T.odt.deletemes.get(key)); } } for (Table T : ap.tables) { if (T.discnt < 0) continue; String tem0 = ""; String tem1 = ""; String tem2 = ""; if (T.st[0] != 0) { tem0 = " 川菜 " + T.st[0] + " " + Chuan.get(Math.round((1.0F)*T.stSum[0] / T.st[0])); } if (T.st[1] != 0) { tem1 = " 晋菜 " + T.st[1] + " " + Ji.get(Math.round((1.0F)*T.stSum[1] / T.st[1])); } if (T.st[2] != 0) { tem2 = " 浙菜 " + T.st[2] + " " + Zhe.get(Math.round((1.0F)*T.stSum[2] / T.st[2])); } if((tem1+tem0+tem2).equals("")) System.out.println("table " + T.tableNum + ": " + T.odt.getTotalPrice() + " " + T.Gettottalprice() + " "); else System.out.println("table " + T.tableNum + ": " + T.odt.getTotalPrice() + " " + T.Gettottalprice() + tem0 + tem1 + tem2); } for (String name:ap.tname) { int sum = 0; float discount = -1; String tele = ""; for(Table T: ap.tables){ if(name.equals(T.name)&&T.discnt>0){ discount = T.discnt; tele = T.telephone; sum += T.sum; } } if(discount>0) System.out.println(name + " "+tele+" "+sum); } } } class MyComparator implements Comparator<String>{//重写 @Override public int compare(String o1,String o2){ return o1.compareTo(o2); } }
数据类：
class AheadProcess{ Menu menu; ArrayList<Table> tables; Set<String> tname; HashMap<Integer,String> WrongF; boolean IsEnd = true;//主体结束标志 AheadProcess() {//前提 this.menu = new Menu(); this.tables = new ArrayList<Table>(); tname = new TreeSet<String>(new MyComparator()); WrongF = new HashMap<>(); } }
期中考试分析：
一丶代码：
import java.util.*; public class Main{ public static void main(String[] args){ Scanner sc = new Scanner(System.in); double input = sc.nextDouble(); Circle circle = new Circle(); circle.SetR(input); } } class Circle{ private double r; public void SetR(double r){ if(r<=0){ System.out.print("Wrong Format"); return; } this.r = r; System.out.printf("%.2f\n", Math.PI*r*r); } }
第二题：
import java.util.*; public class Main{ public static void main(String[] args){ Scanner sc = new Scanner(System.in); Rectangle rt = new Rectangle(); float x1,y1,x2,y2; x1 = sc.nextFloat(); y1 = sc.nextFloat(); x2 = sc.nextFloat(); y2 = sc.nextFloat(); rt.SetPoint(x1,y1,x2,y2); rt.inputS(); } } class Rectangle{ private Point LeftPoint; private Point RightPoint; Rectangle(){ LeftPoint = new Point(); RightPoint = new Point(); } private float S; public void SetPoint(float x1,float y1,float x2,float y2){ LeftPoint.SetXY(x1,y1); RightPoint.SetXY(x2,y2); } public void inputS(){ S = Math.abs(LeftPoint.x-RightPoint.x) * Math.abs(LeftPoint.y- RightPoint.y); System.out.printf("%.2f",S); } } class Point{ float x,y; public void SetXY(float x,float y){ this.x = x; this.y = y; } }
第三题：
import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner input = new Scanner(System.in); int choice = input.nextInt(); switch (choice) { case 1://Circle double radiums = input.nextDouble(); Shape circle = new Circle(radiums); printArea(circle); break; case 2://Rectangle double x1 = input.nextDouble(); double y1 = input.nextDouble(); double x2 = input.nextDouble(); double y2 = input.nextDouble(); Point leftTopPoint = new Point(x1, y1); Point lowerRightPoint = new Point(x2, y2); Rectangle rectangle = new Rectangle(leftTopPoint, lowerRightPoint); printArea(rectangle); break; } } private static void printArea(Shape shape) { System.out.printf("%.2f",shape.printArea()); } } class Shape{ double Area; double printArea(){ return Area; } } class Rectangle extends Shape{ private Point LeftPoint; private Point RightPoint; public Rectangle(Point leftTopPoint, Point lowerRightPoint) { LeftPoint = leftTopPoint; RightPoint = lowerRightPoint; } public double printArea(){ Area = Math.abs(LeftPoint.x-RightPoint.x) * Math.abs(LeftPoint.y- RightPoint.y); return Area; } } class Point{ double x,y; public Point(double x, double y) { this.x = x; this.y = y; } } class Circle extends Shape{ private double r; Circle(double r){ if(r<=0){ System.out.print("Wrong Format"); System.exit(0); } this.r = r; } public double printArea(){ Area =Math.PI*r*r; return Area; } }
第四题：
import java.util.*; public class Main { public static void main(String[] args) { Scanner input = new Scanner(System.in); ArrayList<Shape> list = new ArrayList<>(); int choice = input.nextInt(); while(choice != 0) { switch(choice) { case 1://Circle double radiums = input.nextDouble(); Shape circle = new Circle(radiums); list.add(circle); break; case 2://Rectangle double x1 = input.nextDouble(); double y1 = input.nextDouble(); double x2 = input.nextDouble(); double y2 = input.nextDouble(); Point leftTopPoint = new Point(x1,y1); Point lowerRightPoint = new Point(x2,y2); Rectangle rectangle = new Rectangle(leftTopPoint,lowerRightPoint); list.add(rectangle); break; } choice = input.nextInt(); } list.sort(Comparator.naturalOrder());//正向排序 for(int i = 0; i < list.size(); i++) { System.out.print(String.format("%.2f", list.get(i).printArea()) + " "); } } } abstract class Shape implements Comparable<Shape>{ @Override public int compareTo(Shape shape) { return Double.compare(printArea(), shape.printArea()); } abstract double printArea(); } class Rectangle extends Shape{ private Point LeftPoint; private Point RightPoint; public Rectangle(Point leftTopPoint, Point lowerRightPoint) { LeftPoint = leftTopPoint; RightPoint = lowerRightPoint; } public double printArea(){ return Math.abs(LeftPoint.x-RightPoint.x) * Math.abs(LeftPoint.y- RightPoint.y); } } class Point{ double x,y; public Point(double x, double y) { this.x = x; this.y = y; } } class Circle extends Shape{ private double r; Circle(double r){ if(r<=0){ System.out.print("Wrong Format"); System.exit(0); } this.r = r; } public double printArea(){ return Math.PI*r*r; } }
考试总分析：
没啥难的，没什么阻力，一口气写过来的。几处浪费时间是因为看错题目，和理解错题目意思。
最终分析：
在大作业中，我尝试并成功运用了很多新的数据容器，如集合，映射，动态数组等，在第五次作业中，我预先设计好了类之间的关系，写代码的思路越来越清晰。到100分的时间越来越短。
不足的是：每一次大作业几乎都是一次推倒重写。老师的初衷是迭代，在每一次的基础上添加修改。并且没有很好的运用到上课学的新知识。一味的去凑简单的100分，没有去认真体会java这门语言的优势。
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