package labReport;
import java.util.Scanner;
public class StudentInformation {
public String name = new String();
public long stuId = 0L;
public String lesson_1 = new String();
public String lesson_2 = new String();
public float scoreOfLesson_1 = 0f;
public float scoreOfLesson_2 = 0f;
public float sum = 0f;
public StudentInformation next = null;;
public StudentInformation(String name, long stuId, String lesson_1, String lesson_2, float scoreOfLesson_1, float scoreOfLesson_2){
this.lesson_1 = lesson_1;
this.lesson_2 = lesson_2;
this.name = name;
this.scoreOfLesson_1 = scoreOfLesson_1;
this.scoreOfLesson_2 = scoreOfLesson_2;
this.stuId = stuId;
this.sum = this.scoreOfLesson_1 + this.scoreOfLesson_2;
}
public StudentInformation(Scanner input){
this(input.next(), input.nextLong(), null, null, input.nextFloat(), input.nextFloat());
}
}
package labReport;
import java.util.Scanner;
public class StudentList {
public StudentInformation head = null;
private Scanner input = new Scanner(System.in);
public float sumLesson_1 = 0f, sumLesson_2 = 0f;
public StudentInformation maxStuSc_1, minStuSc_1;
public StudentInformation minStuSc_2, maxStuSc_2;
public StudentList(){
head = new StudentInformation(null, 0, null, null, 0, 0);
}
public StudentList(int lenght){
this();
int i = 0;
for(i = 0; i < lenght; i++)
insert();
}
public void change(long id){
float newScore_1 = 0f, newScore_2 = 0f;
StudentInformation p = head;
while(p != null){
if(p.stuId == id){
System.out.println("
：\t \t ");
while(! input.hasNextFloat()){
input.next();
System.out.println("
， ！");
System.out.println("
：\t \t ");
}
newScore_1 = input.nextFloat();
while(! input.hasNextFloat()){
input.next();
System.out.println("
， ！");
System.out.println("
：\t \t ");
}
newScore_2 = input.nextFloat();
p.scoreOfLesson_1 = newScore_1;
p.scoreOfLesson_2 = newScore_2;
}
p = p.next;
}
}
public void insert() {//
StudentInformation p = head;
StudentInformation s = new StudentInformation(input);
s.next = p.next;
p.next = s;
}
public void remove(long id) throws Exception{//
StudentInformation p = head.next;
int j = -1;
while(p.next != null && j < lenght() - 1){
if(p.stuId == id)
break;
p = p.next;
j++;
}
if(j > lenght() || p == null){
throw new Exception(" ");
}
p.next = p.next.next;
}
public int lenght() {//
int lenght = 0;
StudentInformation p = head.next;
while(p != null){
lenght++;
p = p.next;
}
return lenght;
}
public void rank(){//
StudentInformation p, q, snap1, snap2;
while(true){
int judge = 0;
p = head;
q = p.next;
while(p.next != null && q.next != null){
if(p.next.sum < q.next.sum){
judge = 1;
snap1 = p.next;
snap2 = q.next;
p.next = snap2;
snap1.next = snap1.next.next;
snap2.next = snap1;
}
if(q.next == null || p.next == null)
break;
p = p.next;
q = q.next;
}
if(judge == 0)
break;
}
}
public void findStudent(long id) throws Exception{//
StudentInformation p = head.next;
while(p != null && p.stuId != id)
p = p.next;
if(p == null){
throw new Exception(" ！");
}
System.out.println(" ：" + p.name + "\t" + head.lesson_1 + " ：" + (int)(p.scoreOfLesson_1 * 10) / 10.0
+ "\t" + head.lesson_2 + " ：" + (int)(p.scoreOfLesson_2 * 10) / 10.0);
}
public void check(){//
StudentInformation p = head.next;
System.out.println(" \t \t \t"
+ " \t \t \t ");
while(p != null){
System.out.println(p.name + "\t" + p.stuId + "\t" + head.lesson_1 + "\t"
+ (int)(p.scoreOfLesson_1 * 10) / 10.0 + "\t" + head.lesson_2 +
"\t" + (int)(p.scoreOfLesson_2 * 10) / 10.0 + "\t" + (int)(p.sum * 10) / 10.0);
p = p.next;
}
}
public void statistics(){
StudentInformation p = head.next;
float minScoreOfLesson_2 = 100f, minScoreOfLesson_1 = 100f;
float maxScoreOfLesson_2 = 0f, maxScoreOfLesson_1 = 0f;
while(p != null){
sumLesson_1 += p.scoreOfLesson_1;
sumLesson_2 += p.scoreOfLesson_2;
minStuSc_1 = minScoreOfLesson_1 < p.scoreOfLesson_1 ? minStuSc_1 : p;
maxStuSc_1 = maxScoreOfLesson_1 > p.scoreOfLesson_1 ? maxStuSc_1 : p;
maxStuSc_2 = maxScoreOfLesson_2 > p.scoreOfLesson_2 ? maxStuSc_2 : p;
minStuSc_2 = minScoreOfLesson_2 < p.scoreOfLesson_2 ? minStuSc_2 : p;
minScoreOfLesson_1 = minStuSc_1.scoreOfLesson_1;
minScoreOfLesson_2 = minStuSc_2.scoreOfLesson_2;
maxScoreOfLesson_1 = maxStuSc_1.scoreOfLesson_1;
maxScoreOfLesson_2 = maxStuSc_2.scoreOfLesson_2;
p = p.next;
}
System.out.println("
\t \t
\t \t \t
");
System.out.println("" + maxStuSc_1.scoreOfLesson_1 + "\t" + maxStuSc_1.name + "\t" + maxStuSc_1.stuId + "
" +
minStuSc_1.scoreOfLesson_1 + "\t" + minStuSc_1.name + "\t" + minStuSc_1.stuId);
System.out.println((int)((sumLesson_1 / lenght()) * 10) / 10.0);
System.out.println("
\t \t
\t \t \t
");
System.out.println(maxStuSc_2.scoreOfLesson_2 + "\t" + maxStuSc_2.name + "\t" + maxStuSc_2.stuId + "
" +
minStuSc_2.scoreOfLesson_2 + "\t" + minStuSc_2.name + "\t" + minStuSc_2.stuId);
System.out.println((int)((sumLesson_2 / lenght()) * 10) / 10.0);
}
}
package labReport;
import java.util.Scanner;
public class TestReport {
static{
System.out.println(" （ ）!");
System.out.println(" ， !");
System.out.print(" ：");
}
public static void main(String[] args){
StudentList list = new StudentList();
Scanner input = new Scanner(System.in);
int capita = 0;//
int i = 0;
list.head.lesson_1 = input.next();
list.head.lesson_2 = input.next();
System.out.println(" !");
while(! input.hasNextInt()){
input.next();
System.out.println(" ， ：");
System.out.println(" !");
}
capita = input.nextInt();
System.out.println(" \t \t \t" + list.head.lesson_1
+ " \t" + list.head.lesson_2 + " ");
for(i = 0; i < capita; i++)
list.insert();
menu(list);
input.close();
}
@SuppressWarnings("resource")
public static void menu(StudentList list){
Scanner input = new Scanner(System.in);
while(true){
System.out.println(" !");
System.out.println("1、 \t2、 \t3、 \t4、"
+ " \t5、 \t6、 \t7、 ");
while(! input.hasNextInt()){
input.next();
System.out.println(" ， ！");
System.out.println("1、 \t2、 \t3、 \t4、"
+ " \t5、 \t6、 \t7、 ");
}
switch(input.nextInt()){
case 1: System.out.println(" \t \t \t" + list.head.lesson_1 + " \t" + list.head.lesson_2 + " ");
list.insert();
System.out.println(" ！");
break;
case 2:
System.out.println(" ！");
try {
while(! input.hasNextInt()){
input.next();
System.out.println(" ， ！");
}
list.remove(input.nextLong());
} catch (Exception e) {
e.printStackTrace();
}
System.out.println(" ！");
break;
case 3:
System.out.println(" ！");
try {
while(! input.hasNextInt()){
input.next();
System.out.println(" ， ！");
}
list.findStudent(input.nextLong());
} catch (Exception e) {
e.printStackTrace();
}
System.out.println(" ！");
break;
case 4:
System.out.println(" ！");
while(! input.hasNextInt()){
input.next();
System.out.println(" ， ！");
}
list.change(input.nextLong());
System.out.println(" ！");
break;
case 5:
list.rank();
list.check();
System.out.println(" ！");
break;
case 6:
list.statistics();
System.out.println(" ！");
break;
case 7: System.out.println(" ！");
System.exit(0);
break;
default:
try {
System.out.println(" ！
");
Thread.sleep(10000);
} catch (InterruptedException e) {
e.printStackTrace();
}
break;
}
}
}
}