2022 05 31~ 2022 06 01 Java学习课后练习

public class Work1{
	public static void main(String[] args){
	int right = 8;
	int left = 10;
	int m =0;
	System.out.println("互换前左手："+left);
	System.out.println("互换前右手："+right);
	m = left;
	left = right;
	System.out.println("互换后左手："+left);
	right = m;
	System.out.println("互换后右手："+right);
	}
}

import java.util.Scanner;
public class Work2{
	public static void main(String[] args){

	Scanner scanner=new Scanner(System.in);
    
	System.out.println("请输入购买的商品：");
	String sho1  = scanner.next();
	System.out.println("一件T恤的价格是：245元");
	System.out.println("请输入购买的商品数量：");
	int num1  = scanner.nextInt();

	System.out.println("请输入购买的商品：");
	String sho2 = scanner.next();
	System.out.println("一双网球鞋的价格是：570元");
	System.out.println("请输入购买的商品数量：");
	int num2 = scanner.nextInt();

	System.out.println("请输入购买的商品：");
	String sho3  = scanner.next();
	System.out.println("一副网球拍的价格是：320元");
	System.out.println("请输入购买的商品数量：");
	int num3  = scanner.nextInt();
     
	System.out.println("*********消费单**********");
	System.out.println("商品t" + "单价" + "t"  + "个数" + "t" + "金额");
	int sheoMoney1 = num1 * 245;
	int sheoMoney2 = num2 * 570;
	int sheoMoney3 = num3 * 320;
	System.out.println(sho1 +"t"+ 245+ "t" +num1 + "t" + sheoMoney1);
	System.out.println(sho2 +"t" + 570 + "t"  + num2 +"t" +sheoMoney2);
	System.out.println(sho3 +"t" + 320 + "t"+ num3 + "t" +sheoMoney3);

	System.out.println("");	
	System.out.println("");
    //计算价格、优惠、积分
	System.out.println("折扣：0.8");
	System.out.println("消费金额："+( sheoMoney1 + sheoMoney2 + sheoMoney3));
	System.out.println("实际交费：￥1500");
	double z =( sheoMoney1 + sheoMoney2 + sheoMoney3) * 0.8;
	System.out.println(z);
	double money = 1500 - z;
	System.out.println("找钱："+money );
	double s = ( sheoMoney1 + sheoMoney2 + sheoMoney3)/100 * 3;
	System.out.println("本次购物所得积分（消费100元地3分）："+s);
	}
}

import java.util.Scanner;
public class Work345{
	public static void main(String[] args){
		System.out.println("作业3");
		// 作业3
		Scanner scanner =new Scanner(System.in);
		System.out.println("请输矩形入长");
		int high = scanner.nextInt();
		System.out.println("请输矩形入宽");
		int width = scanner.nextInt();
		int s = high * width;
		int l =  (high + width) * 2;
		System.out.println("矩形的面积是：" + s);
		System.out.println("矩形的周长是：" + l);
		
		System.out.println();
		System.out.println();
		System.out.println("作业4");
		//作业4
		System.out.println("请输入你需要计算的天数:");
		int day = scanner.nextInt();
		int week = day/7;
		System.out.print("这些天一共有"+week+"整周");
		int days = day%7;
		System.out.println("零"+days+"天");


		System.out.println();
		System.out.println();
		System.out.println("作业5");

		//作业5
		System.out.println("请输入一个四位数");
		int num = scanner.nextInt();
		int qian = num / 1000;
		int bai = num %1000 / 100;
		int shi = num % 1000 % 100 / 10;
		int ge = num % 10 ;
		System.out.println(num+"的千位数字是："+qian);
		System.out.println(num+"的百位数字是："+bai);
		System.out.println(num+"的十位数字是："+shi);
		System.out.println(num+"的个位数字是："+ge);	

		}
}

import java.util.Scanner;
public class Work6_1{
	public static void  main(String[] args){
	Scanner sc = new Scanner(System.in);	
 	
	//某超市抽奖，四位会员卡号各位数之和为16中奖
	System.out.print("作业1n");	
	System.out.print("请输入您的四位数会员卡号：");
	int keyid = sc.nextInt();
	System.out.println();	

	int i = keyid/1000+keyid%1000/100+keyid%100/10 +keyid%10/1;
	boolean f = i != 16;
	if( f == true ){
		System.out.print("恭喜您：未中奖n");	

		}else{
		System.out.print("恭喜您：中奖了！！！n");
		}


	//让用户输入两个数，第一的输入的比第二的输入的大？ false/ true
	System.out.print("作业2n");
	System.out.print("请输入两个数:");
	int num1 = sc.nextInt();
	System.out.print("请再输入一个数:");
	int num2 = sc.nextInt();
	System.out.println();	
	
	
	System.out.println("第一的输入的比第二的输入的大？");
	System.out.println(num1 != num2 && num1 > num2 );


	//用户输入一个整数判断是否是7的倍数
	System.out.print("作业3n");
	System.out.print("请输入一个整数:");
	int num3 = sc.nextInt();
	
	int  number = num3 % 7;
	boolean fe = ( number == 0);
	System.out.println("这个"+fe+"7的倍数");
	
	
	
	//让用户输入两个数，第一的输入的比第二的输入的大？ false/ true
	System.out.print("作业4n");

	System.out.print("请输入一个年份:");
	int year = sc.nextInt();

	boolean fu =( 0 == year % 4 && 0 != year%100 );
	boolean fx =( 0 == year % 400);
	System.out.print("您输入的"+(fu || fx)+"闰年");
	}
}