第五周上机

第一题

package test;

import java.util.Scanner;

public class hhh {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		
		int ge,shi,bai,x;
		
		for(x=100;x<=999;x++){
			bai=x/100;
			shi=x/10%10;
			ge=x%10;
		if(ge*ge*ge+shi*shi*shi+bai*bai*bai==x)
			System.out.println(x);
	}
}
}
	

　　

 

 第二题

package test;

import java.util.Scanner;

public class hhh {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		
		
		  for(int i=1;i<=6;i++){
			  for(int j=1;j<=i;j++){
				  System.out.print(j);
			  }
				  System.out.println();
	        }
	
}
}

　　

 

package test;

import java.util.Scanner;

public class hhh {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		
		
		  for(int i=1;i<=6;i++){
			  for(int j=1;j<=(7-i);j++){
				  System.out.print(j);
			  }
				  System.out.println();
	        }
	
}
}

　　

第三题

package test;

import java.util.Scanner;

public class hhh {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner input=new Scanner(System.in);
		int x=input.nextInt();
		int y=input.nextInt();
		int z=input.nextInt();
		int he=0;
		System.out.println("请分别输入年份，月份，几号");
		for(int i=1;i<=x; x++){
			switch(i){
			case 4:
			case 9:
			case 6:
			case 11:
				he+=30;
				break;
			case 2:
				if(y%4==0&&y%100!=0||y%400==0)
					he+=29;
				else
					he+=28;
				break;
				default:
					he+=31;
					break;
					
				
				
				
			}
		}
		
		he+=x;
		System.out.println("改天是"+he);
		 
	
}
}

　　第四题

package test;

import java.util.Scanner;

public class hhh {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		Scanner input=new Scanner(System.in);
		System.out.println("输入一个四位数");
		int a=input.nextInt();
		int ge,shi,bai,qian;
		ge=a%10;
		shi=a/10%10;
		bai=a/100%10;
		qian=a/1000;
		System.out.println("反转后的四位数是"+ge+shi+bai+qian);
	            }
	        
	}