import java.util.Scanner;
import java.util.Random;
class zuoye
{
public static void main(String[] args)
{
String[] arr = {"董斌","张锐","王荣臣","韩凯","张禄","刘继勋","张维","牛攀"};
//遍历名字
//bl(arr);
//随机点名
//sj(arr);
//库存界面
//jm();
//整数相加
//System.out.println(add(1,2));
//小数相加
//System.out.println(add(1.6,3.5));
//整数判断相等
//System.out.println(pd(1,2));
//小数判断相等
//System.out.println(pd(1.6,3.5));
//m行 n列的星星矩形
//jx(3,9);
//nn乘法表
//cfb(3);
//长方形求面积
//System.out.println(cfx(5.6,5));
//圆形求面积
//System.out.println(yx(8));
//打印除9以外100内的数字 一行5个
//dys();
//打印100内的素数 一行5个 记录个数
//zs();
}
public static void bl(String[] arr){
for(int i = 0;i<arr.length;i++){
System.out.println(arr[i]);
}
}
public static void sj(String[] arr){
Random r = new Random();
int i = r.nextInt(8);
System.out.println(arr[i]);
}
public static void jm(){
System.out.println("------------------------库存管理------------------------");
System.out.println("1.查看库存清单");
System.out.println("2.修改商品库存数量");
System.out.println("3.退出");
System.out.println("请输入要执行的操作编号：");
Scanner sc = new Scanner(System.in);
int num = sc.nextInt();
switch (num)
{
case 1:
kc();
break;
case 2:
xg();
break;
case 3:
tc();
break;
}
}
public static void kc(){
System.out.println("---------------------------"+"商城库存清单"+"-------------------------------");
System.out.println("品牌型号"+"\t"+"尺寸"+"\t"+"价格"+"\t"+"库存数");
String Product_name1 = "MacBookAir";
String Product_name2 = "ThinkpadT450";
String Product_name3 = "ASUS-FL5800";
double size1 = 13.3;
double size2 = 14.0;
double size3 = 15.6;
double price1 = 6988.88;
double price2 = 5999.99;
double price3 = 4999.5;
int num1 = 5;
int num2 = 10;
int num3 = 18;
System.out.println(Product_name1+"\t"+size1+"\t"+price1+"\t"+num1);
System.out.println(Product_name2+"\t"+size2+"\t"+price2+"\t"+num2);
System.out.println(Product_name3+"\t"+size3+"\t"+price3+"\t"+num3);
System.out.println("------------------------------------------------------------------------");
int anum = num1 + num2 + num3;
double aprice = price1 + price2 + price3;
System.out.println("总库存数："+anum);
System.out.println("库存商品总金额："+aprice);
}
public static void xg(){
System.out.println("请输入需要修改的商品编号");
Scanner sc = new Scanner(System.in);
int bh = sc.nextInt();
System.out.println("请输入更改数量");
int xsl = sc.nextInt();
int num1 =5;
int num2 =10;
int num3 =18;
if(bh==1){
num1 = xsl;
}else if(bh==2){
num2 = xsl;
}else if(bh==3){
num3 = xsl;
}else{
System.out.println("输入有误");
}
System.out.println("---------------------------"+"商城库存清单"+"-------------------------------");
System.out.println("品牌型号"+"\t"+"尺寸"+"\t"+"价格"+"\t"+"库存数");
String Product_name1 = "MacBookAir";
String Product_name2 = "ThinkpadT450";
String Product_name3 = "ASUS-FL5800";
double size1 = 13.3;
double size2 = 14.0;
double size3 = 15.6;
double price1 = 6988.88;
double price2 = 5999.99;
double price3 = 4999.5;
System.out.println(Product_name1+"\t"+size1+"\t"+price1+"\t"+num1);
System.out.println(Product_name2+"\t"+size2+"\t"+price2+"\t"+num2);
System.out.println(Product_name3+"\t"+size3+"\t"+price3+"\t"+num3);
System.out.println("------------------------------------------------------------------------");
int anum = num1 + num2 + num3;
double aprice = price1 + price2 + price3;
System.out.println("总库存数："+anum);
System.out.println("库存商品总金额："+aprice);
}
public static void tc(){
return;
}
public static int add(int a,int b){
return a + b;
}
public static double add(double a,double b){
return a + b;
}
public static boolean pd(int a,int b){
return a==b?true:false;
}
public static boolean pd(double a,double b){
return a==b?true:false;
}
public static void jx(int m,int n){
for(int i = 0;i<m;i++){
for(int j = 0;j<n;j++){
System.out.print("*");
}
System.out.println();
}
}
public static void cfb(int n){
for(int i =1;i<=n;i++){
for(int j = 1;j<=i;j++){
System.out.print(j+"*"+i+"="+i*j+"\t");
}
System.out.println();
}
}
public static double cfx(double a,double b){
return a*b;
}
public static double yx(double r){
return r*r*Math.PI;
}
public static void dys(){
int j = 0;
for(int i = 1;i<=100;i++){
if(i==9){
continue;
}else if(i%10==9){
continue;
}else if(i/10>=9 && i/10<10){
continue;
}else{
j++;
if(j<6){
System.out.print(i+"\t");
}else{
j = 1;
System.out.print("\n"+i+"\t");
}
}
}
}
public static void zs(){
int k = 0;
int n = 0;
for(int i = 2;i <=100;i++){
int zhishu = 1; //1表示是质数
for (int j =2;j< i ;j++){
if(i%j == 0){
zhishu = 0; //0表示不是质数
}
}
if(zhishu == 1){
k++;
n++;
if(k<6){
System.out.print(i+"\t");
}else{
k=1;
System.out.print("\n"+i+"\t");
}
}
}
System.out.println();
System.out.println(n);
}
}
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