import java.util.Scanner;
public class Student {
String name;
String sex;
String age;
String num;
int score[]=new int[5];
public void inset() {
Scanner a= new Scanner(System.in);
System.out.println("请输入这位同学的姓名:");
name = a.nextLine();
System.out.println("请输入这位同学的性别:");
sex = a.nextLine();
System.out.println("请输入这位同学的年龄:");
age = a.nextLine();
System.out.println("请输入这位同学的学号:");
num = a.nextLine();
score = new int [5];
}
public void Sum (){
Scanner a= new Scanner(System.in);
int sum= 0;
for(int i=0;i<5;i++) {
System.out.println("请输入这位同学第"+(i+1)+"门的成绩:");
score[i] = a.nextInt();
sum = score[i]+sum;
}
System.out.println("这位同学的平均成绩为:"+(sum)/5); }
public void exit () {
System.out.println("这位同学的姓名是:"+name);
System.out.println("这位同学的性别是:"+sex);
System.out.println("这位同学的年龄是:"+age);
System.out.println("这位同学的学号是:"+num);
for(int i=0;i<2;i++) {
System.out.println("这位同学第"+(i+1)+"门的成绩:"+score[i]);
} }
public static void main (String[] args) {
Scanner c= new Scanner(System.in);
Student s1 = new Student();
Student s2 = new Student();
System.out.println("请输入第一位同学的信息:");
s1.inset();
System.out.println("这位同学的成绩为:");
s1.Sum ();
System.out.println("请输入第二位同学的信息:");
s2.inset();
System.out.println("这位同学的成绩为:");
s2.Sum ();
System.out.println("请输入要查询的序号:");
int b = c.nextInt(); if(b==1) s1. exit (s1); else s2.exit (s2);
} } //第五题 学生类,调用
//“借书卡”类
//属性:账号、持卡人姓名、身份证号码、地址、
//已借书数、可借书数、本次借书数、本次还书数
//方法一:借书,显示本次借书数和可借书数
//方法二:还书,显示本次还书数和可借书数
//6.2 测试类
//本次借书数 和 本次还书数,从键盘输入
import java.util.Scanner;
public class card {
String zh;
String name;
String id;
String dz;
int yjs;int kjs;
int bcjs;int bchs;
public void brouch(){
Scanner a= new Scanner(System.in);
System.out.println("请输入本次借书数量:");
int yjs = a.nextInt();
System.out.println("可借书数量为:"+(20-yjs));
}
public void huanshu(){
Scanner a= new Scanner(System.in);
System.out.println("请输入本次还书数量为:");
int bcjs = a.nextInt();
System.out.println("可还书数量为:"+(20-yjs+bcjs));
}
public static void main (String[] args){
Scanner a= new Scanner(System.in);
System.out.println("请输入执卡人账号:");
String zh = a.nextLine();
System.out.println("请输入执卡人姓名:");
String name = a.nextLine();
System.out.println("请输入执卡人身份证:");
String id= a.nextLine();
System.out.println("请输入执卡人地址:");
String dz = a.nextLine();
System.out.println("可借书总数为20");
} //第六题 借书卡
}
import java.util.Arrays;
import java.util.Scanner;
public class work2 {
public static void main (String[] args){
int score[], max,min;
score = new int [4];
Scanner a= new Scanner(System.in);
for(int i=0;i<4;i++) {
System.out.println("请输入第"+(i+1)+"位同学的成绩:");
score[i] = a.nextInt();
}
max=score[0];min=score[0];
System.out.println("顺序输出为:");
for(int i=0;i<4;i++){
System.out.println(score[i]);
if(score[i]>max) max=score[i];
if(score[i]<min) min=score[i]; }
System.out.println("逆序输出为:");
for(int i=3;i>=0;i--){
System.out.println(score[i]); }
System.out.println("最大值为:"+max);
System.out.println("最小值为:"+min);
}// 输出最高分; 输出最低分
}