题目描述
编辑
输入多个学生的成绩信息，包括：学号、姓名、数学成绩、物理成绩。
学号是每个学生的唯一识别号，互不相同。
姓名可能会存在重复。
要求：使用ArrayList存储学生信息。
输入格式:
输入多个学生的成绩信息，每个学生的成绩信息格式：学号+英文空格+姓名+英文空格+数学成绩+英文空格+物理成绩
以“end”为输入结束标志
输出格式:
按数学/物理成绩之和从高到低的顺序输出所有学生信息，每个学生信息的输出格式：学号+英文空格+姓名+英文空格+数学/物理成绩之和
成绩相同的情况，按输入的先后顺序输出。
import java.util.*;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
List<Student> list = new ArrayList<>();
String line = sc.nextLine();
while (!line.equals("end")){
String[] words = line .split(" ");
Student stu =new Student(words[0],words[1], Integer.parseInt(words[2]),Integer.parseInt(words[3]) );
list.add(stu);
line= sc.nextLine();
}
Collections.sort(list, new Comparator<Student>() {
@Override
public int compare(Student o1, Student o2) {
int score1 = o1.getMathScore() + o1.getPhysScore();
int score2 = o2.getMathScore() + o2.getPhysScore();
if (score2 != score1) {
return score2 -score1;
} else {
return list.indexOf(o1) - list.indexOf(o2);
}
}
});
for(Student stu:list){
int sum = stu.getMathScore()+ stu.getPhysScore();
System.out.println(stu.getId()+" "+stu.getName()+" "+sum);
}
}
}
class Student{
private String id;
private String name;
private int mathScore;
private int physScore;
public Student(String id, String name, int mathScore, int physScore){
this.id = id;
this.name = name;
this.mathScore = mathScore;
this.physScore = physScore;
}
public String getId(){
return this.id;
}
public String getName(){
return this.name;
}
public int getMathScore(){
return this.mathScore;
}
public int getPhysScore(){
return this.physScore;
}
}
class Elephant {
private String name; // 名称
private int age; // 年龄
private String color; // 颜色
private int weight; // 体重，单位 kg
private boolean hasTusks; // 是否有象牙
/**
* 构造函数
*/
public Elephant(String name, int age, String color, int weight, boolean hasTusks) {
this.name = name;
this.age = age;
this.color = color;
this.weight = weight;
this.hasTusks = hasTusks;
}
void eat() {
System.out.println(name + " is eating.");
}
public void sleep() {
System.out.println(name + " is sleeping.");
}
public void trumpeting() {
System.out.println(name + " is trumpeting.");
}
public void takeBath() {
System.out.println(name + " is taking a bath.");
}
public void walk() {
System.out.println(name + " is walking.");
}
public void squirtWater() {
System.out.println(name + " is squinting water.");
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getColor() {
return color;
}
public void setColor(String color) {
this.color = color;
}
public int getWeight() {
return weight;
}
public void setWeight(int weight) {
this.weight = weight;
}
public boolean isHasTusks() {
return hasTusks;
}
public void setHasTusks(boolean hasTusks) {
this.hasTusks = hasTusks;
}
}
class Elephant1 {
private String name; // 名称
private int age; // 年龄
private String color; // 颜色
private int weight; // 体重，单位 kg
private boolean hasTusks; // 是否有象牙
public Elephant1(String name, int age, String color, int weight, boolean hasTusks) {
this.name = name;
this.age = age;
this.color = color;
this.weight = weight;
this.hasTusks = hasTusks;
}
public void eat() {
System.out.println(name + " is eating.");
}
public void sleep() {
System.out.println(name + " is sleeping.");
}
public void trumpeting() {
System.out.println(name + " is trumpeting.");
}
public void takeBath() {
System.out.println(name + " is taking a bath.");
}
/**
* 行走
*/
public void walk() {
System.out.println(name + " is walking.");
}
/**
* 喷水
*/
public void squirtWater() {
System.out.println(name + " is squinting water.");
}
/**
* 获取名称
*/
public String getName() {
return name;
}
/**
* 设置名称
*/
public void setName(String name) {
this.name = name;
}
/**
* 获取年龄
*/
public int getAge() {
return age;
}
/**
* 设置年龄
*/
public void setAge(int age) {
this.age = age;
}
/**
* 获取颜色
*/
}
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，
要求：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。
完成课程成绩统计程序-2、3两次程序后，比较继承和组合关系的区别。思考一下哪一种关系运用上更灵活，更能够适应变更。
题目最后的参考类图未做修改，大家根据要求自行调整，以下内容加粗字体显示的内容为本次新增的内容。
某高校课程从性质上分为：必修课、选修课、实验课，从考核方式上分为：考试、考察、实验。
考试的总成绩由平时成绩、期末成绩分别乘以权重值得出，比如平时成绩权重0.3，期末成绩权重0.7，总成绩=平时成绩*0.3+期末成绩*0.7。
考察的总成绩直接等于期末成绩
实验的总成绩等于课程每次实验成绩乘以权重后累加而得。
课程权重值在录入课程信息时输入。（注意：所有分项成绩的权重之和应当等于1）
必修课的考核方式必须为考试，选修课可以选择考试、考察任一考核方式。实验课的成绩必须为实验。
1、输入：
包括课程、课程成绩两类信息。
课程信息包括：课程名称、课程性质、考核方式、分项成绩数量、每个分项成绩的权重。
考试课信息格式：课程名称+英文空格+课程性质+英文空格+考核方式+英文空格+平时成绩的权重+英文空格+期末成绩的权重
考察课信息格式：课程名称+英文空格+课程性质+英文空格+考核方式
实验课程信息格式：课程名称+英文空格+课程性质+英文空格+考核方式+英文空格+分项成绩数量n+英文空格+分项成绩1的权重+英文空格+。。。+英文空格+分项成绩n的权重
实验次数至少4次，不超过9次
课程性质输入项：必修、选修、实验
考核方式输入选项：考试、考察、实验
考试/考查课程成绩信息包括：学号、姓名、课程名称、平时成绩（可选）、期末成绩
考试/考查课程成绩信息格式：学号+英文空格+姓名+英文空格+课程名称+英文空格+平时成绩+英文空格+期末成绩
实验课程成绩信息包括：学号、姓名、课程名称、每次成绩｛在系列-2的基础上去掉了（实验次数），实验次数要和实验课程信息中输入的分项成绩数量保持一致｝
实验课程信息格式：学号+英文空格+姓名+英文空格+课程名称+英文空格+第一次实验成绩+...+英文空格+最后一次实验成绩
以上信息的相关约束：
1）成绩是整数，不包含小数部分，成绩的取值范围是【0,100】
2）学号由8位数字组成
3）姓名不超过10个字符
4）课程名称不超过10个字符
5）不特别输入班级信息，班级号是学号的前6位。
2、输出：
输出包含三个部分，包括学生所有课程总成绩的平均分、单门课程总成绩平均分、班级所有课程总成绩平均分。
为避免四舍五入误差，
计算单个成绩时，分项成绩乘以权重后要保留小数位，计算总成绩时，累加所有分项成绩的权重分以后，再去掉小数位。
学生总成绩/整个班/课程平均分的计算方法为累加所有符合条件的单个成绩，最后除以总数。
1）学生课程总成绩平均分按学号由低到高排序输出
格式：学号+英文空格+姓名+英文空格+总成绩平均分
如果某个学生没有任何成绩信息，输出：学号+英文空格+姓名+英文空格+"did not take any exams"
2）单门课程成绩按课程名称的字符顺序输出
课程成绩输出格式：课程名称+英文空格+总成绩平均分
如果某门课程没有任何成绩信息，输出：课程名称+英文空格+"has no grades yet"
3）班级所有课程总成绩平均分按班级由低到高排序输出
格式：班级号+英文空格+总成绩平均分
如果某个班级没有任何成绩信息，输出：班级名称+英文空格+ "has no grades yet"
异常情况：
1）如果解析某个成绩信息时，课程名称不在已输入的课程列表中，输出：学号+英文空格+姓名+英文空格+":"+课程名称+英文空格+"does not exist"
2）如果解析某个成绩信息时，输入的成绩数量和课程的考核方式不匹配，输出：学号+英文空格+姓名+英文空格+": access mode mismatch"
以上两种情况如果同时出现，按第一种情况输出结果。
3）如果解析某个课程信息时，输入的课程性质和课程的考核方式不匹配，输出：课程名称+" : course type & access mode mismatch"
4）格式错误以及其他信息异常如成绩超出范围等，均按格式错误处理，输出"wrong format"
5）若出现重复的课程/成绩信息，只保留第一个课程信息，忽略后面输入的。
6）如果解析实验课程信息时，输入的分项成绩数量值和分项成绩权重的个数不匹配，输出：课程名称+" : number of scores does not match"
7）如果解析考试课、实验课时，分项成绩权重值的总和不等于1，输出：课程名称+" : weight value error"
import java.util.*;
import java.text.*;
class Calculate_grades {
int stu_all_grades(Data_storage data_storage,String num){//单个学生总课程平均分计算 返回一个分数 1)
int count =0;//这个学生有几门课
int sum = 0;
for (Map.Entry<String, Score> entry : data_storage.stu__st_cour.get(num).gradeMap.entrySet()) {
Score value = entry.getValue();
if(Integer.parseInt(value.total_scores)>=0) {
count++;
sum += Integer.parseInt(value.total_scores);
}
}
if(count!=0)
return sum/count;
else
return -100;//没有参加任何考试
}
int[] single_course_grades(Data_storage data_storage,String name){ //2) 课程名
int count = 0;
int[] aver_grade = new int[3];//0：平时成绩 1：期末考试 2：总分平均
for (Map.Entry<String, StudentsAll_mes> e : data_storage.stu__st_cour.entrySet()) {//遍历选课类:num-选课类
StudentsAll_mes value = e.getValue();
for (Map.Entry<String, Score> entry : value.gradeMap.entrySet()) {//遍历选课类:course.name-Score
String key1 = entry.getKey();
Score value1 = entry.getValue();
if (key1.equals(name)) {
if(Integer.parseInt(value1.total_scores)>=0) {//总分为- 说明算成绩无效
count++;
aver_grade[2] += Integer.parseInt(value1.total_scores);
if (value1 instanceof Test_Score) {
if (Integer.parseInt(value1.total_scores) >= 0) {
aver_grade[0] += Integer.parseInt(((Test_Score) value1).normal_score);
aver_grade[1] += Integer.parseInt(((Test_Score) value1).end_score);
}
} else if (value1 instanceof Inspect_Score){
if (Integer.parseInt(value1.total_scores) >= 0) {
aver_grade[0] = -100;//不需要平时成绩
aver_grade[1] += Integer.parseInt(((Inspect_Score) value1).end_score);
}
}else if(value1 instanceof Lab_Score){
if(Integer.parseInt(value1.total_scores)>=0){
aver_grade[0] = -100;
aver_grade[1] += aver_grade[1] += Integer.parseInt(value1.total_scores);
}
}
}
}
}
}
if(count!=0) {
for (int i = 0; i < 3; i++) {
aver_grade[i] = aver_grade[i] / count;
}
}else {
for (int i = 0; i < 3; i++) {
aver_grade[i] = -100;
}
}
return aver_grade;
}
int Class_grades(Data_storage data_storage,String num){//3)
int sum = 0;
int count = 0;
for (Map.Entry<String, Student> mapEntry : data_storage.classes.get(num).students.entrySet()) {//班级号-Student类
Student value = mapEntry.getValue();//遍历这个班级的所有学生
for (Map.Entry<String, StudentsAll_mes> e : data_storage.stu__st_cour.entrySet()) {//stu_num-选课类
String key1 = e.getKey();//遍历学生的选课类 学号
StudentsAll_mes value1 = e.getValue();
if (key1.equals(value.num)) {//选课类中 跟输入的学号一样
for (Map.Entry<String, Score> entry : value1.gradeMap.entrySet()) {//该num所有成绩遍历
Score gra = entry.getValue();
if(Integer.parseInt(gra.total_scores)>=0) {//有效才算
sum += Integer.parseInt(gra.total_scores);
count++;
}
}
}
}
}
if(count!=0)
return sum/count;
else
return -100;
}
void final_score(Data_storage data_storage,String num){//计算没门课的成绩 学号
data_storage.stu__st_cour.get(num).gradeMap.forEach((key,value)->{//学号 成绩
if(value instanceof Test_Score&&((Test_Score) value).normal_score.matches("\\d+")&&((Test_Score) value).end_score.matches("\\d+")) {
double tem = ((Test_Course) data_storage.courses.get(key)).normal_weight*Integer.parseInt(((Test_Score) value).normal_score);
double tem1 = ((Test_Course) data_storage.courses.get(key)).end_weight*Integer.parseInt(((Test_Score) value).end_score);
value.total_scores = String.valueOf((int)(tem+tem1));
}else if(value instanceof Inspect_Score&&((Inspect_Score) value).end_score.matches("\\d+")){
value.total_scores = ((Inspect_Score) value).end_score;
}else if(value instanceof Lab_Score&&((Lab_Score) value).lab_num.matches("\\d+")){
float sum = 0;
int i=0;
for (Integer score : ((Lab_Score) value).scores) {
sum+= score* ((Lab_Course) data_storage.courses.get(key)).weights.get(i);
i++;
}
value.total_scores = String.valueOf((int)sum);
}
});
}
}
class Class {
String num;
TreeMap<String, Student> students = new TreeMap<>(); //班级里的学生 学号 学生
Class(String num){
this.num = num;
}
}
class Course {
String type;
String test_way;
String name;
Course(String name,String type, String test_way){
this.type = type;
this.name = name;
this.test_way = test_way;
}
}
class Inspect_Course extends Course{
Inspect_Course(String name, String type, String test_way) {
super(name, type, test_way);
}
}
class Test_Course extends Course{
double normal_weight;
double end_weight;
Test_Course(String name, String type, String test_way,String normal_weight,String end_weight) {
super(name, type, test_way);
this.normal_weight = Float.parseFloat(normal_weight);
this.end_weight = Float.parseFloat(end_weight);
}
}
class Lab_Course extends Course{
int sub_scores_num;
ArrayList<Float> weights = new ArrayList<>();
Lab_Course(String name, String type, String test_way,String line) {
super(name, type, test_way);
String[] lines = line.split(" ");
sub_scores_num = Integer.parseInt(lines[3]);
for(int i=4;i<lines.length; i++){
weights.add(Float.parseFloat(lines[i]));
}
}
}
class Data_storage {
TreeMap<String , Course> courses;//课程 k：课程名 v:课程
TreeMap<String, Class> classes = new TreeMap<>();//班级 k:班级号V:班级
TreeMap<String, StudentsAll_mes> stu__st_cour;//选课类学生类结合 k:学号 v:选课类
InAndOut_put output = new InAndOut_put();
Data_storage(){
//学生和选课类结合
stu__st_cour = new TreeMap<>(Data_storage::compare);//重写排序
courses = new TreeMap<>(Data_storage::compare);
}
private static int compare(String o1, String o2) {
try {
Comparator<Object> comparator = Collator.getInstance(Locale.CHINA);
if (comparator.compare(o1, o2) < 0) {
return -1;
} else if (comparator.compare(o1, o2) > 0) {
return 1;
}
} catch (Exception ignored) {
}
return 0;
}
void setInspectCourses(String name, String type, String test_way){
if(!courses.containsKey(name)) {
courses.put(name, new Inspect_Course(name, type, test_way));
}
}
void setTestCourses(String name, String type, String test_way,String normal_weight, String end_weight){
if(!courses.containsKey(name)) {
courses.put(name, new Test_Course(name, type, test_way,normal_weight, end_weight));
}
}
void setLabCourses(String name, String type, String test_way,String line){
if(!courses.containsKey(name)) {
courses.put(name, new Lab_Course(name, type, test_way,line));
}
}
void setClasses(String num){
if(!classes.containsKey(num)) {
classes.put(num, new Class(num));
}
}
void setStudents(String clas_num, String name, String num){//班级号 姓名 学号
if(classes.containsKey(clas_num)){
if(!classes.get(clas_num).students.containsKey(num))
classes.get(clas_num).students.put(num,new Student(name,num));
}
}
void setStu__st_courAndMap(String num,String course,String normal_score,String end_score){//添加选课类 学生姓名 课程名称 分数
if(!stu__st_cour.containsKey(num)){
stu__st_cour.put(num,new StudentsAll_mes(num,course,normal_score,end_score));
}
else{
stu__st_cour.get(num).setGradeMap(course,normal_score,end_score);
}
}
void setStu__st_courAndMap(String num,String course,String end_score){
if(!stu__st_cour.containsKey(num)){
stu__st_cour.put(num,new StudentsAll_mes(num,course,end_score));
}
else{
stu__st_cour.get(num).setGradeMap(course,end_score);
}
}
void set_lab_grades(String stu_num,String course,String lab_num,String grades){
ArrayList<Integer> scores = new ArrayList<>();
String[] tem = grades.split(" ");
for(int i=3;i<tem.length;i++){
if(tem[i].matches("\\d+"))
scores.add(Integer.parseInt(tem[i]));
}
if(!stu__st_cour.containsKey(stu_num)){
StudentsAll_mes tem_stu_mes = new StudentsAll_mes();
tem_stu_mes.set_lab_stu_mes(stu_num,course,lab_num,scores);
stu__st_cour.put(stu_num,tem_stu_mes);
}else{
stu__st_cour.get(stu_num).set_lab_gradeMap(course,lab_num,scores);
}
}
}
class Input_Format {
String regex_c_test = "^[\\u4e00-\\u9fa5a-zA-Z0-9]{1,10}\\s(必修|选修)\\s考试\\s((0.\\d{1,2})|(1-9?))\\s((0.\\d{1,2})|(1-9?))$";
String regex_c_inspect = "[\\u4e00-\\u9fa5a-zA-Z0-9]{1,10}\\s选修\\s考察$";
String regex_c_lab = "^[\\u4e00-\\u9fa5a-zA-Z0-9 ]{1,10}\\s实验\\s实验\\s[4-9]\\s((0.\\d{1,2})|(1-9?))(\\s((0.\\d{1,2})|(1-9?))){3,9}$";
String regex_CS = "^\\d{8}\\s+[\\u4e00-\\u9fa5a-zA-Z0-9]{1,10}\\s+[\\u4E00-\\u9FA5A-Za-z0-9]{1,10}\\s*((100)|(\\d{1,2})|(0))?\\s+((100)|(\\d{1,2})|(0))$";
String regex_lab = "^\\d{8}\\s[\\u4e00-\\u9fa5a-zA-Z0-9]{1,10}\\s[\\u4e00-\\u9fa5a-zA-Z0-9 ]{1,10}\\s((100)|([1-9]\\d)|\\d)(\\s((100)|([1-9]\\d)|\\d)){2,9}$";
boolean isEnd = true;//结束标志
String[] strings;
void inputProcessing(String line,Data_storage data_storage) {
lineProcessing(line);//分割
data_storage.output.add_input(line);//存储
if(line.matches(regex_c_inspect)){
data_storage.setInspectCourses(strings[0],strings[1],strings[2]);
}else if(line.matches(regex_c_lab)){
data_storage.setLabCourses(strings[0],strings[1],strings[2],line);
}else if(line.matches(regex_c_test)){
data_storage.setTestCourses(strings[0],strings[1],strings[2],strings[3],strings[4]);//成绩信息
} else if(line.matches(regex_CS)||line.matches(regex_lab)){
data_storage.setClasses(strings[0].substring(0,6));
data_storage.setStudents(strings[0].substring(0, 6), strings[1], strings[0]);//学生的添加
if (data_storage.courses.containsKey(strings[2])) {//课程里有这个课
if (data_storage.courses.get(strings[2]).type.equals("选修")) {//
if (data_storage.courses.get(strings[2]).test_way.equals("考试")&&strings.length == 5) {
data_storage.setStu__st_courAndMap(strings[0], strings[2], strings[3], strings[4]);
}else if(data_storage.courses.get(strings[2]).test_way.equals("考察")&&strings.length==4){
data_storage.setStu__st_courAndMap(strings[0], strings[2], strings[3]);
} else {
data_storage.setStu__st_courAndMap(strings[0], strings[2], "no access", "no access");
}
} else if (data_storage.courses.get(strings[2]).type.equals("必修")) {//
if (strings.length == 5) {
data_storage.setStu__st_courAndMap(strings[0], strings[2], strings[3],strings[4]);
} else {//无效
data_storage.setStu__st_courAndMap(strings[0], strings[2], "no access", "no access");
}
} else if(data_storage.courses.get(strings[2]).type.equals("实验")){
if(strings.length == 3+((Lab_Course) data_storage.courses.get(strings[2])).sub_scores_num){
data_storage.set_lab_grades(strings[0],strings[2], String.valueOf(((Lab_Course) data_storage.courses.get(strings[2])).sub_scores_num),line);
}else{
data_storage.set_lab_grades(strings[0],strings[2],"num error","no access");
}
}
}else{
data_storage.setStu__st_courAndMap(strings[0], strings[2], "not exist");
}
}
}
void lineProcessing(String line){
strings = line.split(" ");
}
}
class Inspect_Score extends Score{
String end_score;
Inspect_Score(String end_score) {
this.end_score = end_score;
}
}
class Output_Format {
Calculate_grades calculate = new Calculate_grades();
String regex_c_test = "^[\\u4e00-\\u9fa5a-zA-Z0-9]{1,10}\\s(必修|选修|实验)\\s(考试|考察|实验)\\s((\\d{1,2})|(1-9?))\\s((\\d{1,2})|(1-9?))$";
String regex_c_test_e = "^[\\u4e00-\\u9fa5a-zA-Z0-9]{1,10}\\s(必修|选修|实验)\\s(考试|考察|实验)\\s((0.\\d{1,2})|(1-9?))\\s((0.\\d{1,2})|(1-9?))$";
String regex_c_inspect = "[\\u4e00-\\u9fa5a-zA-Z0-9]{1,10}\\s(必修|选修|实验)\\s(考试|考察|实验)$";
String regex_c_lab = "^[\\u4e00-\\u9fa5a-zA-Z0-9]{1,10}\\s(必修|选修|实验)\\s(考试|考察|实验)\\s[4-9]\\s((0.\\d{1,2})|(1-9?))(\\s((0.\\d{1,2})|(1-9?))){1,10}$";
String regex_CS = "^\\d{8}\\s+[\\u4e00-\\u9fa5a-zA-Z0-9]{1,10}\\s+[\\u4e00-\\u9fa5a-zA-Z0-9]{1,10}\\s*((100)|(\\d{1,2})|(0))?\\s+((100)|(\\d{1,2})|(0))$";
String regex_lab = "^\\d{8}\\s[\\u4e00-\\u9fa5a-zA-Z0-9]{1,10}\\s[\\u4e00-\\u9fa5a-zA-Z0-9]{1,10}\\s((100)|([1-9]\\d)|\\d)(\\s((100)|([1-9]\\d)|\\d)){1,20}$";
void outputProcessing(Data_storage data) {
data.classes.forEach((num,Class)-> Class.students.forEach((name, student)-> calculate.final_score(data,student.num)));
for(String i:data.output.input){
String[] tem = i.split(" ");
if(i.matches(regex_c_test_e)||i.matches(regex_c_test)||i.matches(regex_c_inspect)||i.matches(regex_c_lab)){
if(tem[1].equals("必修")&&(tem[2].equals("考察")||tem[2].equals("实验"))){
data.output.add_output(tem[0] + " : course type & access mode mismatch");
}else if(tem[1].equals("实验")&&!tem[2].equals("实验")) {
data.output.add_output(tem[0] + " : course type & access mode mismatch");
}else if(tem[1].equals("选修")&&tem[2].equals("实验")) {
data.output.add_output(tem[0] + " : course type & access mode mismatch");
}
if(tem[1].equals("实验")&&tem[2].equals("实验")) {
if(tem.length-4>=4&&tem.length - 4<=9) {
if (Integer.parseInt(tem[3]) != tem.length - 4) {
data.output.add_output(tem[0] + " : number of scores does not match");
data.courses.remove(tem[0]);
continue;
}
float tem_weight = 0;
for (int j = 4; j < tem.length; j++) {
tem_weight += Float.parseFloat(tem[j]);
}
if (Math.abs(tem_weight - 1) > 0.0001) {
data.output.add_output(tem[0] + " : weight value error");
data.courses.remove(tem[0]);
continue;
}
}else{
try {
if (Integer.parseInt(tem[3]) != tem.length - 4) {
data.output.add_output(tem[0] + " : number of scores does not match");
data.courses.remove(tem[0]);
continue;
}
} catch (Exception ignored) {
}
}
}if((tem[1].equals("必修")||tem[1].equals("选修"))&&tem[2].equals("考试")){
if(tem.length-3==2) {
float tem_weight = Float.parseFloat(tem[3]) + Float.parseFloat(tem[4]);
if (Math.abs(tem_weight - 1) > 0.0001) {
data.output.add_output(tem[0] + " : weight value error");
data.courses.remove(tem[0]);
}
}
}
}else if(i.matches(regex_CS)||i.matches(regex_lab)) {
if(!data.courses.containsKey(tem[2])){//不存在
data.output.add_output(tem[2]+" does not exist");
data.stu__st_cour.get(tem[0]).gradeMap.remove(tem[2]);
}else{
if(data.courses.get(tem[2]).type.equals("必修") && tem.length!=5) {//必修 但是只有期末成绩
data.output.add_output(tem[0]+" "+tem[1]+" : access mode mismatch");
}else if(data.courses.get(tem[2]).type.equals("选修")) {
if ((data.courses.get(tem[2]).test_way.equals("考试") && tem.length != 5) ||
(data.courses.get(tem[2]).test_way.equals("考察") && tem.length != 4))
data.output.add_output(tem[0] + " " + tem[1] + " : access mode mismatch");
}else if(data.courses.get(tem[2]).type.equals("实验")){
if(data.courses.get(tem[2]).test_way.equals("实验")&&(tem.length-3<4||tem.length-3>9||tem.length-3!=((Lab_Course) data.courses.get(tem[2])).sub_scores_num))
data.output.add_output(tem[0] + " " + tem[1] + " : access mode mismatch");
}
}
}else if(!i.equals("end")){
data.output.add_output("wrong format");
}
}
data.classes.forEach((cla_num,Class1)->{//遍历所有班级
Class1.students.forEach((stu_num,student)->{
int tem=calculate.stu_all_grades(data,stu_num);
if(tem>=0)
data.output.add_output(stu_num+" "+Class1.students.get(stu_num).name+" "+tem);
else
data.output.add_output(stu_num+" "+Class1.students.get(stu_num).name+" "+"did not take any exams");
});
});
data.courses.forEach((key,value)-> {
int[] tem = calculate.single_course_grades(data, key);
if (tem[0] < 0 && tem[1] < 0 && tem[2] < 0) {//三个为- 则没成绩
data.output.add_output(key + " has no grades yet");
}else {
if (value.type.equals("选修") || value.type.equals("必修") || value.type.equals("实验")) {
data.output.add_output(key + " " + tem[2]);
}
}
});
data.classes.forEach((num,Class)->{
int tem = calculate.Class_grades(data,num);
if(tem>=0) {
data.output.add_output(num + " " + tem);
}else
data.output.add_output(num+" has no grades yet");
});
}
void output_all(Data_storage data){
data.output.output.forEach(System.out::println);
}
}
abstract class Score {
String total_scores = "-100";
}
class Student {
String name;
String num;
Student(String name, String num) {
this.name = name;
this.num = num;
}
}
class StudentsAll_mes {
String num;//学生
TreeMap<String,Score> gradeMap =new TreeMap<>();
StudentsAll_mes(String stu_name, String course, String normal_score,String test_score){
this.num = stu_name;
gradeMap.put(course,new Test_Score(normal_score,test_score));
}
StudentsAll_mes(String stu_name, String course, String test_score){
this.num = stu_name;
gradeMap.put(course,new Inspect_Score(test_score));
}
public StudentsAll_mes() {
}
void set_lab_stu_mes(String stu_num,String course,String lab_num,ArrayList<Integer> scores){
this.num = stu_num;
gradeMap.put(course,new Lab_Score(lab_num,scores));
}
void set_lab_gradeMap(String course,String lab_num,ArrayList<Integer> scores){
if(!gradeMap.containsKey(course))
gradeMap.put(course,new Lab_Score(lab_num,scores));
}
void setGradeMap(String course, String normal_score,String test_score){
if(!gradeMap.containsKey(course))
gradeMap.put(course, new Test_Score(normal_score,test_score));
}
void setGradeMap(String course,String test_score){
if(!gradeMap.containsKey(course))
gradeMap.put(course,new Inspect_Score(test_score));
}
}
class Test_Score extends Score{
String normal_score;
String end_score;
Test_Score(String normal_score,String end_score) {
this.normal_score = normal_score;
this.end_score = end_score;
}
}
class Lab_Score extends Score {
String lab_num;//试验次数
ArrayList<Integer> scores;
Lab_Score(String lab_num,ArrayList<Integer> scores){
this.lab_num = lab_num;
this.scores = scores;
}
}
class InAndOut_put {
List<String> output = new ArrayList<>();
List<String> input = new ArrayList<>();
void add_output(String out){
output.add(out);
}
void add_input(String out){
input.add(out);
}
}
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
Input_Format inputFormat = new Input_Format();//输入
Output_Format outputFormat = new Output_Format();//输出
Data_storage data_storage = new Data_storage();
while (inputFormat.isEnd){
String inputLine = scanner.nextLine();
if(inputLine.equals("end")){
inputFormat.isEnd = false;
break;
}
inputFormat.inputProcessing(inputLine,data_storage);
}
outputFormat.outputProcessing(data_storage);
outputFormat.output_all(data_storage);
}
}
class Elephant {
private String name; // 名称
private int age; // 年龄
private String color; // 颜色
private int weight; // 体重，单位 kg
private boolean hasTusks; // 是否有象牙
/**
* 构造函数
*/
public Elephant(String name, int age, String color, int weight, boolean hasTusks) {
this.name = name;
this.age = age;
this.color = color;
this.weight = weight;
this.hasTusks = hasTusks;
}
void eat() {
System.out.println(name + " is eating.");
}
public void sleep() {
System.out.println(name + " is sleeping.");
}
public void trumpeting() {
System.out.println(name + " is trumpeting.");
}
public void takeBath() {
System.out.println(name + " is taking a bath.");
}
public void walk() {
System.out.println(name + " is walking.");
}
public void squirtWater() {
System.out.println(name + " is squinting water.");
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getColor() {
return color;
}
public void setColor(String color) {
this.color = color;
}
public int getWeight() {
return weight;
}
public void setWeight(int weight) {
this.weight = weight;
}
public boolean isHasTusks() {
return hasTusks;
}
public void setHasTusks(boolean hasTusks) {
this.hasTusks = hasTusks;
}
}
class Elephant1 {
private String name; // 名称
private int age; // 年龄
private String color; // 颜色
private int weight; // 体重，单位 kg
private boolean hasTusks; // 是否有象牙
public Elephant1(String name, int age, String color, int weight, boolean hasTusks) {
this.name = name;
this.age = age;
this.color = color;
this.weight = weight;
this.hasTusks = hasTusks;
}
public void eat() {
System.out.println(name + " is eating.");
}
public void sleep() {
System.out.println(name + " is sleeping.");
}
public void trumpeting() {
System.out.println(name + " is trumpeting.");
}
public void takeBath() {
System.out.println(name + " is taking a bath.");
}
/**
* 行走
*/
public void walk() {
System.out.println(name + " is walking.");
}
/**
* 喷水
*/
public void squirtWater() {
System.out.println(name + " is squinting water.");
}
/**
* 获取名称
*/
public String getName() {
return name;
}
/**
* 设置名称
*/
public void setName(String name) {
this.name = name;
}
/**
* 获取年龄
*/
public int getAge() {
return age;
}
/**
* 设置年龄
*/
public void setAge(int age) {
this.age = age;
}
/**
* 获取颜色
*/
}
- 输入n，然后连续输入n个身份证号。
- 然后根据输入的是sort1还是sort2，执行不同的功能。输入的不是sort1或sort2，则输出
exit并退出。
输入sort1，将每个身份证的年月日抽取出来，按年-月-日格式组装，然后对组装后的年-月-日升序输出。
输入sort2，将所有身份证按照里面的年月日升序输出。-
import java.util.*; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n= sc.nextInt(); String line =sc.nextLine(); List <String> list =new ArrayList<>(); for(int i=0;i<n;i++){ line =sc.nextLine(); list.add(line); } // System.out.println(list.get(0).substring(6,14)); Collections.sort(list, new Comparator<String>() { @Override public int compare(String o1, String o2) { int year1 = Integer.parseInt(o1.substring(6, 10)); int year2 = Integer.parseInt(o2.substring(6, 10)); int month1 = Integer.parseInt(o1.substring(10, 12)); int month2 = Integer.parseInt(o2.substring(10, 12)); int day1 = Integer.parseInt(o1.substring(12, 14)); int day2 = Integer.parseInt(o2.substring(12, 14)); if (year1 != year2) { return year1 - year2; } else if (month1 != month2) { return month1 - month2; } else return day1 - day2; } }); line =sc.nextLine(); while (true){ if(line .equals("sort1")){ for(String str:list){ System.out.println(str.substring(6,10)+"-"+str.substring(10,12)+"-"+str.substring(12,14)); } line =sc.nextLine(); continue; } if(line.equals("sort2")){ for (String str:list){ System.out.println(str); } line =sc.nextLine(); continue; } System.out.println("exit"); break; } } } class Elephant { private String name; // 名称 private int age; // 年龄 private String color; // 颜色 private int weight; // 体重，单位 kg private boolean hasTusks; // 是否有象牙 /** * 构造函数 */ public Elephant(String name, int age, String color, int weight, boolean hasTusks) { this.name = name; this.age = age; this.color = color; this.weight = weight; this.hasTusks = hasTusks; } void eat() { System.out.println(name + " is eating."); } public void sleep() { System.out.println(name + " is sleeping."); } public void trumpeting() { System.out.println(name + " is trumpeting."); } public void takeBath() { System.out.println(name + " is taking a bath."); } public void walk() { System.out.println(name + " is walking."); } public void squirtWater() { System.out.println(name + " is squinting water."); } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getColor() { return color; } public void setColor(String color) { this.color = color; } public int getWeight() { return weight; } public void setWeight(int weight) { this.weight = weight; } public boolean isHasTusks() { return hasTusks; } public void setHasTusks(boolean hasTusks) { this.hasTusks = hasTusks; } } class Elephant1 { private String name; // 名称 private int age; // 年龄 private String color; // 颜色 private int weight; // 体重，单位 kg private boolean hasTusks; // 是否有象牙 public Elephant1(String name, int age, String color, int weight, boolean hasTusks) { this.name = name; this.age = age; this.color = color; this.weight = weight; this.hasTusks = hasTusks; } public void eat() { System.out.println(name + " is eating."); } public void sleep() { System.out.println(name + " is sleeping."); } public void trumpeting() { System.out.println(name + " is trumpeting."); } public void takeBath() { System.out.println(name + " is taking a bath."); } /** * 行走 */ public void walk() { System.out.println(name + " is walking."); } /** * 喷水 */ public void squirtWater() { System.out.println(name + " is squinting water."); } /** * 获取名称 */ public String getName() { return name; } /** * 设置名称 */ public void setName(String name) { this.name = name; } /** * 获取年龄 */ public int getAge() { return age; } /** * 设置年龄 */ public void setAge(int age) { this.age = age; } /** * 获取颜色 */ }
7-4 jmu-Java-04面向对象进阶-03-接口-自定义接口ArrayIntegerStack 分数 10 作者 郑如滨 单位 集美大学定义
IntegerStack接口，用于声明一个存放Integer元素的栈的常见方法:public Integer push(Integer item); //如果item为null，则不入栈直接返回null。如果栈满，也返回null。如果插入成功，返回item。 public Integer pop(); //出栈，如果为空，则返回null。出栈时只移动栈顶指针，相应位置不置为null public Integer peek(); //获得栈顶元素，如果为空，则返回null. public boolean empty(); //如果为空返回true public int size(); //返回栈中元素个数定义IntegerStack的实现类
ArrayIntegerStack，内部使用数组实现。创建时，可指定内部数组大小。main方法说明
- 输入n，建立可包含n个元素的ArrayIntegerStack对象
- 输入m个值，均入栈。每次入栈均打印入栈返回结果。
- 输出栈顶元素，输出是否为空，输出size
- 使用Arrays.toString()输出内部数组中的值。
- 输入x，然后出栈x次，每次出栈均打印。
- 输出栈顶元素，输出是否为空，输出size
import java.util.*; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt(); ArrayIntegerStack stack = new ArrayIntegerStack(n); int m = sc.nextInt(); for (int i = 0; i < m; i++) { int x=sc.nextInt(); System.out.println(stack.push(x)); } System.out.print( stack.peek()+","); System.out.print( stack.empty()+","); System.out.println(stack.size()); System.out.println( stack.toString()); int x = sc.nextInt(); for (int i = 0; i < x; i++) { System.out.println( stack.pop()); } System.out.print( stack.peek()+","); System.out.print( stack.empty()+","); System.out.println(stack.size()); System.out.println( stack.toString()); } } interface IntegerStack { Integer push(Integer item); Integer pop(); Integer peek(); boolean empty(); int size(); } class ArrayIntegerStack implements IntegerStack { private Integer[] stack; private int top; public ArrayIntegerStack(int capacity) { stack = new Integer[capacity]; top = -1; } public Integer push(Integer item) { if (item == null || top == stack.length - 1) { return null; } stack[++top] = item; return item; } public Integer pop() { if (empty()) { return null; } return stack[top--]; } public Integer peek() { if (empty()) { return null; } return stack[top]; } public boolean empty() { return top == -1; } public int size() { return top + 1; } public String toString() { return Arrays.toString(stack); } } class Elephant { private String name; // 名称 private int age; // 年龄 private String color; // 颜色 private int weight; // 体重，单位 kg private boolean hasTusks; // 是否有象牙 /** * 构造函数 */ public Elephant(String name, int age, String color, int weight, boolean hasTusks) { this.name = name; this.age = age; this.color = color; this.weight = weight; this.hasTusks = hasTusks; } void eat() { System.out.println(name + " is eating."); } public void sleep() { System.out.println(name + " is sleeping."); } public void trumpeting() { System.out.println(name + " is trumpeting."); } public void takeBath() { System.out.println(name + " is taking a bath."); } public void walk() { System.out.println(name + " is walking."); } public void squirtWater() { System.out.println(name + " is squinting water."); } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public String getColor() { return color; } public void setColor(String color) { this.color = color; } public int getWeight() { return weight; } public void setWeight(int weight) { this.weight = weight; } public boolean isHasTusks() { return hasTusks; } public void setHasTusks(boolean hasTusks) { this.hasTusks = hasTusks; } } class Elephant1 { private String name; // 名称 private int age; // 年龄 private String color; // 颜色 private int weight; // 体重，单位 kg private boolean hasTusks; // 是否有象牙 public Elephant1(String name, int age, String color, int weight, boolean hasTusks) { this.name = name; this.age = age; this.color = color; this.weight = weight; this.hasTusks = hasTusks; } public void eat() { System.out.println(name + " is eating."); } public void sleep() { System.out.println(name + " is sleeping."); } public void trumpeting() { System.out.println(name + " is trumpeting."); } public void takeBath() { System.out.println(name + " is taking a bath."); } /** * 行走 */ public void walk() { System.out.println(name + " is walking."); } /** * 喷水 */ public void squirtWater() { System.out.println(name + " is squinting water."); } /** * 获取名称 */ public String getName() { return name; } /** * 设置名称 */ public void setName(String name) { this.name = name; } /** * 获取年龄 */ public int getAge() { return age; } /** * 设置年龄 */ public void setAge(int age) { this.age = age; } /** * 获取颜色 */ }学习心得:
深刻体会到如何设计和编码,写pta很有用
-