第五次作业

package com.xuexiao;

public class Text5 {

    public static void main(String[] args) {
        
        // TODO Auto-generated method stub
        //1. 打印出所有的"水仙花数"，所谓"水仙花数"是指一个三位数，其各位数字立方和等于该数本身。例如：153是一个"水仙花数"，因为153=1的三次方＋5的三次方＋3的三次方。（知识点：循环语句、条件语句）
        for(int i=100;i<=999;i++) {
            int ge = i%10;
            int shi = i/10%10;
            int bai = i/100%10;
            if(i == ge*ge*ge+shi*shi*shi+bai*bai*bai) {
                System.out.println(i);
            }
        }
    }

}

 

 

package com.xuexiao;

public class Text5 {

    public static void main(String[] args) {
        int i;
        int j;
        // TODO Auto-generated method stub
        //在控制台输出以下图形
        for(i=1;i<=6;i++) {
            for(j=1;j<=i;j++) {
                System.out.print(j);
            }System.out.println("");
        }
    }
}

 

 

package com.xuexiao;

public class Text5 {

    public static void main(String[] args) {
        int i;
        int j;
        // TODO Auto-generated method stub
        //在控制台输出以下图形
        for( i=6;i>=1;i--){
            for( j=1;j<=i;j++)
                System.out.print(j);
        System.out.println();}
    }
}

 

 

 

package com.xuexiao;

public class Text6 {
        public static void main(String args[]) {
            int i;
            int j;
            for(i = 1;i<=6;i++) {
                for(j = 1;j <=(6 - i);j++)
                    System.out.print(" ");
                for(j=i;j>=1;j--) {
                    System.out.print(j);
                }System.out.println(" ");
            }
        }
}

 

 

package com.xuexiao;

public class Text6 {
        public static void main(String args[]) {
            int i;
            int j;
            for(i = 6;i>=1;i--) {
                for(j = 1;j <=(6 - i);j++)
                    System.out.print(" ");
                for(j=1;j<=i;j++) {
                    System.out.print(j);
                    }System.out.println(" ");
            }
        }
}

 

 

package com.xuexiao;

import java.util.Scanner;

public class Text6 {
        public static void main(String args[]) {
        //输入年月日 判断第几天
            int sum = 0;
            Scanner sc = new Scanner(System.in) ;
            System.out.println("请输入年份:");
            int year = sc.nextInt();
            System.out.println("请输入月份：");
            int month = sc.nextInt();
            System.out.println("请输入日：");
            int day = sc.nextInt();
            for(int i =1 ; i<month;i++) {
            switch(i) {
            case 4:
            case 6:
            case 9:
            case 11:
                sum +=30;
                break;
            case 2:
                if(year%4==0 && year %100!=0 || year %400 ==0) 
                    sum +=29;
                else sum+=28;
                break;
                default:
                    sum +=31;
                    break;}
            }sum +=day;
            System.out.println("该天是第"+sum+"天");
            }
        }

 

 

package com.xuexiao;

import java.util.Scanner;

public class Text6 {
        public static void main(String args[]) {
        //输入四位反转
            Scanner sc = new Scanner(System.in);
            System.out.println("请输入一个四位数：");
            int i = sc.nextInt();
            int a = i/1000%10;
            int b = i/100%10;
            int c = i/10%10;
            int d = i%10;
            int reverse;
            reverse = d*1000+c*100+b*10+a;
            System.out.println("反转之后的数为："+reverse);
            }
        }