Day11学习进度

• 练习一
• <电子时间>

public class day11_01 {
    public static void main(String[]args){
        for(int shi=0;shi<24;shi++){
            for(int fen=0;fen<60;fen++){
                for(int miao=0;miao<60;miao++){
                    System.out.println(shi+"."+fen+"."+miao);
                }
            }
        }
    }
}

• 练习二
• <玩具定价和染色>

副

public class day11_02 {
    String color;
    double money;
    public void goumai(){
        System.out.println("正在购买...");
    }
}

主

public class day11_03 {
    public static void main(String[]args){
        day11_02 a=new day11_02();
        System.out.println("当前价格："+a.money);
        System.out.println("正在定价中.....");
        a.money=20.0;
        System.out.println("定价后："+a.money);
        System.out.println("——————————————————————");
        System.out.println("当前颜色："+a.color);
        System.out.println("正在染色中.....");
        a.color="粉色";
        System.out.println("染色后："+a.color);
        a.goumai();
    }
}

• 练习三
• <自我介绍>

副

public class day11_04 {
    String name;
    int age;
    String gender;
    int score;
    public void saiHi(){
        System.out.println("打招呼");
        System.out.println("大家好，我的名字叫"+name+",我今年"+age+"岁了,"+"我是"+gender+"的,"+"我"+score+"分");
    }
}

主

public class day11_05 {
    public static void main(String[]args){
        day11_04 a=new day11_04();
        a.name="张三";
        a.age=17;
        a.gender="男";
        a.score=78;
        a.saiHi();
    }
}

• 练习四
• <数字金字塔，三角形>

import java.util.Scanner;
public class day11_07 {
    public static void main(String[]args){
        Scanner a=new Scanner(System.in);
        for(;;){
            int sz=a.nextInt();
            for(int j=1;j<=sz;j++){
                for(int kong=1;kong<=sz-j;kong++){
                    System.out.print(" ");
                }
                for(int hua=1;hua<=j;hua++){
                    System.out.print(hua);
                    System.out.print(" ");
                }
                System.out.println();
            }
        }
    }
}

• 练习五
• <数字金字塔，菱形>

import java.util.Scanner;
public class day11_06 {
    public static void main(String[]args){
        Scanner a=new Scanner(System.in);
        for(;;){
            int sz=a.nextInt();
            for(int j=1;j<=sz;j++){
                for(int kong=1;kong<=sz-j;kong++){
                    System.out.print(" ");
                }
                for(int hua=1;hua<=j;hua++){
                    System.out.print(hua);
                    System.out.print(" ");
                }
                System.out.println();
            }
            for(int j=1;j<=sz;j++){
                for(int kong=1;kong<=j;kong++){
                    System.out.print(" ");
                }
                for(int hua=1;hua<=(sz-1-j)+1;hua++){
                    System.out.print(hua);
                    System.out.print(" ");
                }
                System.out.println();
            }
        }
    }
}

本文地址：https://blog.csdn.net/qq_51756226/article/details/109616910